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prompted by kettenis, ok miod, tested on the troublesome machine
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sufficient. Now, use bus_space_barrier explicitly. This was exposed
by newer gcc on DS20 alpha with ahc(4) controllers using any drives
other than Seagates. During initial probe the drive vendor/product
string would be empty.
diff from miod; tested by myself and henning
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is causing problems when trying to boot sparc64 from an isp(4).
Verified to fix the sparc64/isp(4) regression by krw@; ok deraadt@
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scsi_link::scsibus hack to determine which channel the link is
associated with.
"looks sane" dlg@, but haven't found any testers yet; committing so
further SCSI refactorings can go in. dlg@ or I will back out or fix
if anything breaks.
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help and ok miod@ thib@
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resolves to s = splbio() and ahc_unlock() which resolves to splx(s)
with splbio/splx calls.
ok marco@ dlg@
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ahc_print_scb() unless option AHC_DEBUG.
Saves about 3KB on alpha RAMDISK{,B}.
ok deraadt@
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false until scsi bus b is initialized.
Set TWIN_CHNLB bit that is used elsewhere. Missed chunk from last code
sync.
Problem found and fixes tested on HP Proliant ML310 by Valov Oleg.
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come with the freebsd sources, rather than duplicating those names in
the ahd_ and ahc_ namespaces. Big reduction in delta to freebsd
sources, which reduces noise when updating the code.
No .o differences found on i386.
ok marco@.
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gibbs@freebsd.
Large commit messages detailing all changes can be read at revisions
1.97 and 1.100 of aic7xxx.c:
www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/aic7xxx/aic7xxx.c
Tested by marco, nate and pefo. Fixed broken system for nate.
ok marco@
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by dealing with various error conditions.
Testing by Marco Peereboom, Olivier Cherrier, Alex Holst, Daniel Lucq,
deraadt@, beck@ and others.
ok deraadt@.
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XS_RESET rather than XS_NOERROR. This prevents unfinished i/o's from
being treated as successfully completed ones.
Don't bother setting SCB_REQUEUE in scb->flags since the scb is
immediately thrown away.
Make setting TAG_ENB a little more correct by doing it somewhere both
the initial scb setup and subsequent tag resets have access to.
Fix a typo.
ok miod "I'm not an authoritative person on SCSI issues... though I'm
learning!" @.
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Renauld of Network Storage Solutions, Inc. Many fixes, wider device
support. In particular, the notorious 'Target 0' problem seems to be
fixed.
Does *not* include any updates to isa or eisa code beyond what was
necessary to compile.
Known issues:
1) Tagged Queuing is probably not optimal.
2) PPR negotiation may not be fully functional.
3) No support yet for freezing devices or channels.
4) The mechanism for preventing 'A' and 'B' channel confusion during probe
can fail if scsibus > 254 found.
5) Requeuing I/O's not working. A workaround will be committed almost
immediately. At the moment timeouts, SCSI message rejects, aborting
SCB's and trying to freeze a device may cause incomplete i/o's to be
reported as complete.
6) Verbosity and probe messages need work.
7) Last disk on bus seems to go through an extra re-negotiation.
8) >16 devices on an adapter will trigger the usual problems of total
openings exceeding available SCB's under heavy load.
Tested by deraadt@, beck@, miod@, naddy@, drahn@, marc@ amoung
others.
ok deraadt@.
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Tom: I did not commit a couple of your changes.
i did not include some punctuation fixes (full stops, etc.)
mnemorable -> mnemonic: i decided memorable was probably better
instrunctions -> instruction: i kept the plural
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the recent changes to scsiconf.c.
a) Restore marking of appropriate devices as tagged
b) Fix an off-by-one error that sprayed bits around
c) Use correct field (quirks) when setting SDEV_NOTAGS bit
d) Use TAG_ENB define instead of MSG_SIMPLE_Q_TAG when
manipulating hscb->control. Both were defined to the
same value, but TAG_ENB is the define used to extract
the bit later on.
This leaves problems, most often seen as faults when accessing
a CD drive and disk drive on the same bus.
ok smurph@
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