a timeout, we must remove the pending SCB from the disconnected list
or risk list corruption when our BDR request using the same SCB is placed
on the waiting list.
Eradicate some silly uses of u_int8_t that just serve to slow the code down.
went backwards when interrupts were masked for more than one i8254
interrupt period. It sometimes went backwards when the i8254 counter
was reprogrammed. Neither of these should happen in normal operation.
Update the i8254 timecounter support variables atomically. Calling
timecounter functions from fast interrupt handlers may actually work
in all cases now.
macro for ELF. Ian@cygnus.com says that is the proper way to use
the ".gnu.warning.SYMBOL" sections. However, he has accepted Doug
Rabson's BFD patch anyway.
generation was causing unaligned access faults on the Alpha.
I have incremented the devstat version number, since this is an interface
change. You'll need to recompile libdevstat, systat, iostat, vmstat and
rpc.rstatd along with your kernel.
Partially Submitted by: Andrew Gallatin <gallatin@cs.duke.edu>
- Make the "what do we do with a drunken disklabel" if-then-else-regardless
tangle easier to read.
- Don't count on the v86 structure being preserved between loop iterations,
as it may be trampled eg. by the DEBUG call.
wasn't getting sent back for most errors, even if there were retries left
on the command. I'm not sure how I ever let this slip by before...
In any case, we now send back ERESTART if there are retries left for the
command, and send back the default error code when there are no retries
left.
Reviewed by: gibbs
without the DA driver.
The problem was that the CD driver depended on scsi_read_write() and
scsi_start_stop(), which were defined in scsi_da.c.
I moved both functions, and their associated data structures and defines
from scsi_da.* to scsi_all.*. This is technically the "wrong" thing to do
since those commands are really only for direct-access type devices, not
for all SCSI devices. I think, though, that the advantage (allowing people
to compile kernels without the disk driver) outweighs any architectural
purity arguments.
PR: kern/7969
Reviewed by: gibbs
annoying #!CAM# indicators are used to be clear, in the expectation
that the places they show will be either fixed or diked out reasonably
quickly.
Reviewed by: ken
CAM options section.
Document that SCSI_DELAY is in milliseconds, not seconds.
Tell users that SCSI_CAM is only needed if you've got the QLogic driver in
your kernel.
Reviewed by: gibbs
Fix a problem reported by bde: setting SCSI_DELAY to 0 doesn't work. Now,
when the user sets SCSI_DELAY to 0, we re-set it to the minimum allowable
bus settle delay (100ms).
Fix a potential panic in xptfinishconfigfunc() if the CCB passed in is
NULL. Reported by, I think, Nicolas Souchu. Fix a memory leak in the same
function (we created a path, but didn't free it) by allocating the getdev
CCB and path on the stack.
Reviewed by: gibbs
- Discard large amounts of BIOS-related code in favour of the more compact
BTX vm86 interface.
- Build the loader module as ELF, although the resulting object is a.out,
make gensetdefs 32/64-bit sensitive and use a single copy of it.
- Throw away installboot, as it's no longer required.
- Use direct bcopy operations in the i386_copy module, as BTX
maps the first 16M of memory. Check operations against the
detected size of actual memory.
insertion point into the start queue looking for entries to remove and
mark them with the 'skip' address, recording the entry furthest from the
insertion point that needs to be removed. We then go through a second
loop starting at the furthest entry to be removed and compress the start
queue. The old algorithm started at (old insert point + 1) and wrapped
through the whole queue which would end up moving the start position in
the queue out from under the nose of the scrip processor.
+ Change some messages about CCB memory allocation
+ Turn a failure to DMA map all of a transaction due to lack of
ISP queue entries into a requeue operation (instead of the
case where it had been treated the same as a DMA too big
operation).
+ put back splsoftvm around bus_dmamap_load calls.
+ cleanup (and fix a glaring bug) in the and of the dma setup
routine. Also, the dma setup routines either return CMD_QUEUED
(for success) or CMD_COMPLETE (for failure) or CMD_EAGAIN
(for requeuing for resource shortage reasons).
