* Kill off device nodes *before* we clear out the queue, to help prevent any
new I/O being queued.
* More useful error reporting in wd_setcache() and wd_flushcache().
* Add a wd_standby() (tested but not used yet).
And the most important:
* In wddetach(), if the device was open, call adapt_delref() so that we
propagate the disable up to our PCMCIA socket.
and kill only pending requests for this drive.
Implement a DRIVE_WAITDRAIN flag, which will cause the active command to
be killed once complete.
Other minor fixes.
Now it's possible to detach a ATA or ATAPI device from ioctl even when
a dd on the raw char partition is running.
Use this to reset the channel before doing a dump, instead of the hack in
wdc_exec_xfer() based on C_POLL. This hack was causing problems on
controllers with a shared queue, because we now can have C_POLL set during
concurent channels probes (problem found and analysed on sparc64 by
Martin Husemann).
This should even make core dumps marginally more reliable on ATA drives.
just have to take an interrupt for each sector.
Tested with one laptop disk (which normally runs in DMA mode and was forced
to single-sector transfers) and 3 CF cards. Increases the performance of
the CF cards substantially (760KB/s->1240KB/s in one case, 410KB/s->750KB/s
in the other two cases).
block was being set 512x further out than it should be, causing rather severe
escalation of the error.
XXX WTF is the point of this shit, anyway? In most cases, the way you're
supposed to fix a bad block on an ATA disk is to rewrite it -- which will
either just transparently fix it, or spare it. This code actively prevents
that.
http://mail-index.netbsd.org/tech-kern/2003/09/25/0006.html
This adds a device (atabus) between IDE controllers and wd or atapibus, to
have each ATA channel show up in the device tree. Later there will be atabus
devices in /dev, so that we can do IOCTL on them.
Each atabus has its own kernel thread, to handle operations that needs polling,
e.g. reset and others.
Device probing on each bus it defered to the atabus thread creation.
This allows to do the reset and basic device probes in parallel, which reduce
boot time on systems with several pciide controllers.
most polling.
2) Clean up some goofiness in pciide -- get rid of the whole "candisable" path
(it's gratuitous) and simplify the code by calling pciide_map_compat_intr(),
*_set_modes() and wdc_print_modes() from central locations.
3) Add a register writability and register ghost test to eliminate phantom
drives more quickly.
in the default disklabel and the boot message, instead of using the
value reported by the drive (which is 16383 if the drive is larger than 8G).
Should fix PR 9864
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.
Bump the kernel rev up to 1.6V
sector information in the kernel. Doing this uncovered some shortcomings
that should have been pretty obvious with the code committed prior, addressing
the major kludge with a new struct - disk_bacsecinfo to be passed into
DIOCBSLIST.
