Fix a potential drive deadlock when saving config to a non-existent
drive.
Add debug calls to catch occasional deadlocks on drives. The problem
(above) is probably gone, but the debug checks remain for a while.
is probably gone, but the debug checks remain for a while.
update_plex_config: Catch yet another divide-by-zero problem when
detaching the last subdisk from a striped plex.
Uncovered-by: Michael Reifenberger <root@nihil.plaut.de>
are pending I/O transactions. It is not clear that is works 100% of
the time under SMP, but since the bt_cmds() that are sent after other
CPUs are started are not critical, the driver will function until I
can figure out why this is the case.
Oh, I forgot to mention: this driver also works on FreeBSD/alpha (big
thanks to Andrew Gallatin). And there is a 2.2.x version available for
those who stubbornly refuse to upgrade.
Networks Tigon 1 and Tigon 2 chipsets. There are a _lot_ of OEM'ed
gigabit ethernet adapters out there which use the Alteon chipset so
this driver covers a fair amount of hardware. I know that it works with
the Alteon AceNIC, 3Com 3c985 and Netgear GA620, however it should also
work with the DEC/Compaq EtherWORKS 1000, Silicon Graphics Gigabit
ethernet board, NEC Gigabit Ethernet board and maybe even the IBM and
and Sun boards. The Netgear board is the cheapest (~$350US) but still
yields fairly good performance.
Support is provided for jumbo frames with all adapters (just set the
MTU to something larger than 1500 bytes), as well as hardware multicast
filtering and vlan tagging (in conjunction with the vlan support in
-current, which I should merge into -stable soon). There are some hooks
for checksum offload support, but they're turned off for now since
FreeBSD doesn't have an officially sanctioned way to support checksum
offloading (yet).
I have not added the 'device ti0' entry to GENERIC since the driver
with all the firmware compiled in is quite large, and it doesn't really
fit into the category of generic hardware.
Repeatedly-tripped-over-by: Vallo Kallaste <vallo@matti.ee>
When VINUMDEBUG is set, free any memory found still
allocated.
Only log errors if DEBUG_EXITFREE is set.
board versions with no BIOS. Separate mailbox interrupts from
IOCB interrupts. Read OUTMAILBOX5 while RISC_INT is active- not
after you clear it (potential race condition). Clear out older broken
BIG_ENDIAN goop. Don't negotiate narrow/async for LVD busses at startup
if already in LVD mode. Note usage of presumptive 1040C revision. For
all the LIP, PDB Changed, Loop UP/DOWN async events, mark fw state
as unknown as well as marking the need to do a getpdb on targets- after
a LIP for certain the f/w has to do PRLI/PLOGI for all targets again
and marking f/w state as unknown gives us a fighting chance to (start
to) hold up for that to complete.
that will SBusify an isp header or the lun/target portions of a request IOCB-
and have these only valid iff __sparc__ (no non-sparc SBus machine that *I*
know about).
free_vinum: Wait for daemon to stop by checking the
vinum_conf.flags & VF_DAEMONOPEN.
vinum_modevent:
When compiled with VINUMDEBUG, check if we have
forgotten to free any memory, and log an error if we
have.
vinumopen: Allow open of an empty subdisk (otherwise we can't
initialize it).
plexes_used and volumes_used. Now these fields are only informative,
and the <object>_allocated count is used for searches, etc. This also
required checking the object state before doing things with the
presumed object.
Problems-reported-by: Kiril Mitev <kiril@ideaglobal.com>
VINUM_<object>CONFIG: return ENXIO rather than EFAULT if an object
doesn't exist.
plexes_used and volumes_used. Now these fields are only informative,
and the <object>_allocated count is used for searches, etc. This also
required checking the object state before doing things with the
presumed object.
Problems-reported-by: Kiril Mitev <kiril@ideaglobal.com>
vinum_scandisk: increment drive use count when we find a good one.
plexes_used and volumes_used. Now these fields are only informative,
and the <object>_allocated count is used for searches, etc. This also
required checking the object state before doing things with the
presumed object.
Problems-reported-by: Kiril Mitev <kiril@ideaglobal.com>
Remove unused (and braindead) functions volume_index, plex_index,
sd_index and drive_index.
Add a flag VF_CREATED for volumes. VF_NEWBORN was being used in two
capacities, and they clashed, my Lord, they clashed.
find_object: restructure the search loop as a result of the change in
variable use.
Decrement object use count in the remove_<object> functions, not in
the free_<object> functions, which are often called with partially
initialized (and uncounted) objects.
plexes_used and volumes_used. Now these fields are only informative,
and the <object>_allocated count is used for searches, etc. This also
required checking the object state before doing things with the
presumed object.
Problems-reported-by: Kiril Mitev <kiril@ideaglobal.com>
Well, better late than newer, but things has been hectic
around here, sorry for the long delay.
DMA support has been added to the ATA disk driver.
This only works on Intel PIIX3/4, Acer Aladdin and Promise controllers.
The promise support works without the BIOS on the board,
and timing modes are set to support up to UDMA speed. This
solves the problems with having more than one promise controller
in the same system.
There is support for "generic" DMA, that might work on other
controllers, but now you have been warned :)
More chipset specific code will come soon, I have to find testers
with the approbiate HW, more on that when I have it ready.
The system now uses its own major numbers, please run MAKEDEV
with the devices you need (ad?, acd?, afd?, ast?).
For now the disk driver will also attach to the old wd major
so one can at least boot without this step, but be warned, this
will eventually go away. The bootblocks will have to be changed
before one can boot directly from an "ad" device though.
Fixed problems:
All known hang problems should be solved
The probe code has been sligthly changed, this should solve
the reports I have lying around (I hope).
Hangs when accessing ata & atapi device on the same channel simultaniously.
A real braino in ata_start caused this, fixed.
As usual USE AT YOUR OWN RISK!!, this is still pre alpha level code.
Especially the DMA support can hose your disk real bad if anything
goes wrong, agaiin you have been warned :)
But please tell me how it works for you!
Enjoy!
-Søren
longjmp. I suspect that the occasional double panic may be the result
of incorrect parameters to longjmp. This happens, of course, like the
entire file, only with -DVINUMDEBUG.
give_sd_to_plex: Don't set Raid-5 subdisk state here.
config_subdisk: handle the name parameter correctly when the subdisk
was referenced in a previous plex definition. The
name parameter must come first.
Handle autosizing relatively correctly. There is
still a danger of losing drive space if problems
occur with an autosized subdisk.
Set state to empty, not up, when complete. This also
solves a nagging problem about enforcing the need to
initialize RAID-5 plexes.
config_plex: handle the name parameter correctly when the plex
was referenced in a previous volume definition. The
name parameter must come first.
Handle initial state better.
update_plex_config:
Calculate the trim factor for RAID-5 plexes correctly.
Set the number of down subdisks correctly when reading
from disk config.
settings you've just sent them and return random values if you follow
the set by a get. This causes problems when you latter run a Tag-enabled
command when you've command tagged mode off.
Recognize aic7895 controllers that have been "acquired" by a RAIDPort
card as normal aic7895s.
Recognize the aic7815 Raid Parity/Memory controller chip and notify
the user that it's RAID functionality will be ignored.
Don't mess with the IRQMS bit in the host control register unless
we are an aic7770 chip.
Use calling context to determine if the card is already paused when
we update the target message request bit field in controller scratch
ram. Looking at the paused bit in the HCNTRL register opened up a
race condition.
Insert delays in the target message request update routine as a temporary
work around for what looks like a chip bug. I'm still investigating this
one.
Fix the Abort/Abort Tag/BDR handler to pull its message from the message
buffer in our softc instead of attempting to get it from a register on
the controller. The message is never recorded by the controller in the
new message scheme.
Don't rely on having an SCB when a BDR occurs. We can issue these during
invalid reconnects to.
Fix a few cases where we were restarting the sequencer but then still
falling out of a switch statement to unpause the sequencer again.
This could cause us to mess up sequencer state if it generated another
pausing interrupt between the time of the restart and unpause.
Kill the 'transceiver settle' loop during card initialization. I
failed to realize that a controller that is not connected to any
cables will never settle or enable the SCSI transceivers at all.
The correct solution is to monitor the IOERR interrupt which indicates
that the transceiver state has changed (UW<->LVD).
Modify the aic7xxx assembler to properly echo input when stdin is not
a tty.
remove the splbio() around the call to launch read requests.
launch_requests:
Move the splbio() protection outside the entire launch_loop. The
previous location was causing problems with IDE drives, where the
call to the strategy routine often did not complete until after
complete_rqe deallocated the request structure.
Solution-independently-found-by: Russell Neeper <r-neeper@tamu.edu>
Problem-reported-by: Vallo Kallaste <vallo@matti.ee>
John Saunders <john@nlc.net.au>
Bernd Walter <ticso@cicely.de> (maybe)
Check for partition types FS_VINUM and FS_UNUSED. Accept both, but
complain about FS_UNUSED. At a later date, only FS_VINUM will be
accepted.
Threatened-since: over a year
Add a flag `force' (VF_FORCECONFIG) to force name changes of
existing drives.
config_drive:
If the drive already has a vinum label, and name doesn't match the
specified drive, do it anyway if the 'force' flag is specified.
finish_config:
Reset the `force' flag.
Continually-tripped-over-by: Karl Pielorz <kpielorz@tdx.co.uk>
give_sd_to_drive:
If the drive is down, take the subdisk down and don't try to fix
things.
update_plex_config:
Don't try to update the config parameters of a plex which isn't
fully configured (state plex_init or plex_unallocated).
Correctly calculate the amount to trim off a striped or RAID-5 plex
whose size is not a multiple of the stripe size.
compiled with or without debugging support. This enables us to catch
(fatal) mismatches between the kernel and userland.
Coalesce flags VINUM_DISKCONFIG and VINUM_READING_CONFIG. They did
essentially the same thing.
Add VINUM_BIGDRIVE for pretending we have macho hardware.
pretends that each drive is 100 times as large as it really is. Not
for use at home.
Coalesce flags VINUM_DISKCONFIG and VINUM_READING_CONFIG. They did
essentially the same thing.
This solved a problem where 'vinum resetconfig' only reset half
the drives.
Reported-by: Brad Knowles <blk@skynet.be>
Karl Pielorz <kpielorz@tdx.co.uk>
Change the super device. We now have three super devices:
1. The normal superdevice used by vinum(8).
2. The superdevice used by vinum(8) when compiled with debug support.
3. The superdevice used by the daemon.
This method allows vinum(8) to determine debug mismatches. Also check
correctly for the device type. The old code did not check all bits of
the minor number.
Reported-by: a cast of thousands, most recently by Brad Knowles
<blk@skynet.be>.
gave yet another internal register layout model for what is
*still* the same architecture. I hope they saved billyuns of gates
'coz otherwise this is *really* annoying.
thwank in register layout goop). A different mboxcmd approach. Some PDB change
infrastructure. Some better management of loopdown/loopup events (keep them
distinct from resource starvation for simq freeze/unfreeze actions).
The old VN device broke in -4.x when the definition of B_PAGING
changed. This patch fixes this plus implements additional capabilities.
The new VN device can be backed by a file ( as per normal ), or it can
be directly backed by swap.
Due to dependencies in VM include files (on opt_xxx options) the new
vn device cannot be a module yet. This will be fixed in a later commit.
This commit delimitted by tags {PRE,POST}_MATT_VNDEV
chip int. and ext. clock synchronisation). Fixed workaround for
transmit threshold underrun. Added volatile keyword to CSR_READ_* and
CSR_WRITE_* macroses. Added DELAYs to eliminate randomness caused
by processor speed. Fixed all TXCON and RXCON registers to be accessed
only when chip is idle, as manual told. Changed epic_init_phy to
drop link by isolating and going loopback, should should force link
partner to restart autonegotiation.
PR: kern/10535, kern/9742, kern/10575
Submitted by: Peter Jeremy, David Greenman
a wierd double-queue arrangement.. It always empties the if_snd queue
then puts the transmit packets into a different queue that is limited
by the number of TX descriptors and does it's own discards...
This should stop the boot-time XXX warning anyway.
MMalloc: save the time at which the request was granted, remove more
crud.
FFree: add a circular buffer of the last 64 Free requests if
DEBUG_MEMFREE is set.
after the volume had been fully operational; involves a change in the
use of the VF_NEWBORN flag. Now if you add a plex to a volume which
is up, the plex will be down and the subdisks stale. You need to
explicitly start the subdisks, which copies data from the good
subdisks to the uninitialized ones.
Stumbled-over-by: Ludwig Pummer <ludwigp@bigfoot.com>
give_sd_to_drive:
correct method to give the entire largest chunk of drive to the
subdisk. Now it's enough to specify a length, and vinum will give
you as much as it can. Not to be recommended except for empty
drives.
Correct a bogon which made vinum refuse to give the last sector of
a drive to a subdisk.
Last-reported-by: Ludwig Pummer <ludwigp@bigfoot.com>
Change %q formats to %ll before the former go away. This doesn't make
much difference, since kernel kvprintf currently doesn't support
either, and the messages in question are just error messages.
- Refined internal interface in keyboard drivers so that:
1. the side effect of device probe is kept minimal,
2. polling mode function is added,
3. and new ioctl and configuration options are added (see below).
- Added new ioctl: KDSETREPEAT
Set keyboard typematic rate. There has existed an ioctl command,
KDSETRAD, for the same purpose. However, KDSETRAD is dependent on
the AT keyboard. KDSETREPEAT provides more generic interface.
KDSETRAD will still be supported in the atkbd driver.
- Added new configuration options:
ATKBD_DFLT_KEYMAP
Specify a keymap to be used as the default, built-in keymap.
(There has been undocumented options, DKKEYMAP, UKKEYMAP, GRKEYMAP,
SWKEYMAP, RUKEYMAP, ESKEYMAP, and ISKEYMAP to set the default keymap.
These options are now gone for good. The new option is more general.)
KBD_DISABLE_KEYMAP_LOADING
Don't allow the user to change the keymap.
Move the Olicom token ring driver to the officially sanctionned location of
/sys/contrib. Also fix some brokenness in the generic token ring support.
Be warned that if_dl.h has been changed and SOME programs might
like recompilation.
The i++ loop from 1..1000 is too small on very fast machines like
PII 450 MHz. Increasing the loop from 1..100000 lets the machine
access PHY. After this patch it's possible to use a SMC PCI card
on a HP Kayak XA series PC Workstation. Workaround until this fix
was to enable debugging in the driver (#define EPIC_DEBUG 1).
Without that patch you get an undefined state:
while true
do
ifconfig -a | grep status:
done
The status messages flaps between twwo values, but not
"connected".
Obtained from: Ustimenko Semen <semen@iclub.nsu.ru>
determine IRQ and DRQ information.
Fix a bug that would cause us to attempt to retrieve extended sync
rate information on cards/firmware revs that do not support that command.
config info. On early revision cards (742a), the EISA register space,
other than the location used to determine the address of the card's main
command ports, is write only.
reports on those most welcome!
Fixed problems:
Hang on probe on "fantom" devices.
The probe now use a timeout to avoid hangs if no interrupt
is recevied.
There has also been more general code clenaups, and some reorgs.
connection.
Clean up support for devices featuring the multiple target SCSI ID feature.
On aic7890/91/96/97 chips, we can now assume the target role on multiple
target ids simultaneously. Although these chips also have sufficient
instruction space to hold to support the initiator and target role at the
same time, the initiator role is currently disabled as it will conflict
(chip design restriction) with the multi-tid feature. I'll probably add
a nob to enable the initiator (there-by disabling multi-tid) some time
in the future.
Return queue full or busy, depending on the tagged nature of the incoming
request, if our command input queue fills up in host memeory.
Deal with accept target I/O resource shortages.
If we get an underrun on a transaction that wasn't supposed to transmit
any data, don't attempt to print out the S/G list. The code would
run until hitting a non-present page. (oops)
interrupts are enabled, this kills the last "unwanted interrupts"
(and there is no ugly hacks like in the old driver to avoid them).
COmmand interrupt devices are now supported, this applies mostly
to older CDROM's and apparently also the ZIP.
Fixed problems:
Number of total sectors wrong on some older drives.
Fixed by not using the LBA size unless we know its valid.
There has also been more general code clenaups, some reorgs also.
Added "options ATA_STATIC_ID" that wires ATA disks like the old wd driver.
Fixed problems:
Dont use more sectors/intr than the drive supports.
Fix announce of > 8.4G disks.
Dont call ad_interrupt/ad_transfer when no disks config'd.
Use the right page# for CDR write mode params.
Fix breakage when no PCI support in kernel.
Implement DEVFS stuff.
General code clenaup.
Change VINUM_SAVECONFIG: it now requires a parameter. 0 means
"configuration updates are finished, please save", and 1 means "please
just save the config". This second meaning is invoked by the new
"saveconfig" command to vinum(8).
Recognize "referenced" drives by the lack of a slash in the device
name, not by a NUL character.
vinum_scandisk: return error indication (ENOENT if we can't find any
vinum drive, otherwise 0).
VINUM_SAVECONFIG: change parameters.
Don't save config while we're reading it from disk.
Change the way we handle the daemon: if we can't communicate with it
for 1 second (which is possible), start a new one. The daemon saves
its pid in daemonpid; on each iteration of the main loop the daemon
checks whether it's still in favour. If not, it silently exits.
Also, when trying to communicate with the daemon, check daemonpid
first. If it's set to 0, don't even try.
Rename the VF_KERNELOP to VF_DISKCONFIG and checkkernel () to
checkdiskconfig (), which better describes their function.
Disable configuration updates if we have an error reading in the
configuration. This stops a "shoot-in-foot" problem where a mistake
can cause the configuration to be obliterated.
Tidy up some messages, which included superfluous \ns.
Recognize RAID-5 configuration information even in the non-RAID-5
version. This fixes shoot-in-foot problems where starting the wrong
version of vinum would kill RAID-5 plexes.
Recognize drives that have been referenced, but for which no physical
location is known. This is part of a modification which will
ultimately allow incrementally reading configurations. Such drives
will have a device name "unknown".
New function return_drive_space () returns space to a drive.
Previously this was part of free_sd ().
give_sd_to_drive: don't do it if the subdisk needs more space than the
drive has available.
config_sd: if reading config from disk, accept plex offset, drive
offset and length specs of -1 to indicate error conditions.
parse_config: return ENOENT if the "read" command doesn't find any
drives.
remove_sd_entry: don't do it, even by force, if it's open.
If the size of a striped or RAID-5 plex is not an integral multiple of
the stripe size, trim the size until it is.
reinstate update_volume_config, which had atrophied, to recalculate
the size of a volume if a plex has shrunk due to stripe size
considerations.
vinumattach: Zero out tables after allocating them
Modify procedure at unload: if a vinum(8) has the superdev open, don't
close down. If only the daemon has it open, send the daemon a stop
request and wait for it to close the superdev, then unload.
In order to do this, create a second superdev which is opened by the
daemon. The open and close routines set a different bit in
vinum_conf.flags; otherwise the treatment is identical.
Remove opencount field in vol structure; replace by a flag bit, since
we can't count the number of opens.
Remove dead LKM grunge.
The much roumored replacement for our current IDE/ATA/ATAPI is
materialising in the CVS repositories around the globe.
So what does this bring us:
A new reengineered ATA/ATAPI subsystem, that tries to overcome
most of the deficiencies with the current drivers.
It supports PCI as well as ISA devices without all the hackery
in ide_pci.c to make PCI devices look like ISA counterparts.
It doesn't have the excessive wait problem on probe, in fact you
shouldn't notice any delay when your devices are getting probed.
Probing and attaching of devices are postponed until interrupts
are enabled (well almost, not finished yet for disks), making
things alot cleaner.
Improved performance, although DMA support is still WIP and not
in this pre alpha release, worldstone is faster with the new
driver compared to the old even with DMA.
So what does it take away:
There is NO support for old MFM/RLL/ESDI disks.
There is NO support for bad144, if your disk is bad, ditch it, it has
already outgrown its internal spare sectors, and is dying.
For you to try this out, you will have to modify your kernel config
file to use the "ata" controller instead of all wdc? entries.
example:
# for a PCI only system (most modern machines)
controller ata0
device atadisk0 # ATA disks
device atapicd0 # ATAPI CDROM's
device atapist0 # ATAPI tapes
#You should add the following on ISA systems:
controller ata1 at isa? port "IO_WD1" bio irq 14
controller ata2 at isa? port "IO_WD2" bio irq 15
You can leave it all in there, the system knows how to manage.
For now this driver reuses the device entries from the old system
(that will probably change later), but remember that disks are
now numbered in the sequence they are found (like the SCSI system)
not as absolute positions as the old system.
Although I have tested this on all the systems I can get my hands on,
there might very well be gremlins in there, so use AT YOU OWN RISK!!
This is still WIP, so there are lots of rough edges and unfinished
things in there, and what I have in my lab might look very different
from whats in CVS at any given time. So please have all eventual
changes go through me, or chances are they just dissapears...
I would very much like to hear from you, both good and bad news
are very welcome.
Enjoy!!
-Søren
tulip_addr_filter() on SIOCSIFFLAGS, and was nuking the IFF_ALLMULTI
on entering tulip_addr_filter(). As a result it was impossible to run
a multicast router on a machine with a "de" interface.
Added autodetection of MMAC Osprey 100 card for
Jan Schmidt <mmedia@rz.uni-greifswald.de>. The MMAC card has an EEPROM
which contains an ASCII string beginning with "MMAC".
Corrected Hauppauge Audio Mux Mute value from 0x01 to 0x04.
Fixed a typo.
Sumitted change:
Added ALPS Tuner Type submitted by Hiroki Mori <mori@infocity.co.jp>
Submitted by: Roger Hardiman and Hiroki Mori <mori@infocity.co.jp>
Addtron appear to have their own VIA Rhine II and RealTek 8139 boards
with custom PCI vendor and device IDs. This commit updates the PCI
vendor and device lists in the vr and rl drivers so that we can probe
the additional devices.
Found by: nosing around the PCI vendor and device code list at:
http://www.halcyon.com/scripts/jboemler/pci/pcicode
This is for various Olicom cards. An IBM driver is following.
This patch also adds support to tcpdump to decode packets on tokenring.
Congratulations to the proud father.. (below)
Submitted by: Larry Lile <lile@stdio.com>
Seems to solve a problem with a mouse not responding to movements in the
X direction. Problem description is still rather vague and solution is
not exactly clear. Problem might be a compiler optimisation.
driver was thinking irq was enabled although it wasn't.
This case was particular to a no-interrupt static configuration.
Reported by: "Norman C. Rice" <nrice@emu.sourcee.com>
Now should be able to report speed for cards using NatSemi PHY.
(if you have one please let me know if it works as I
only have the Intel version)
Reviewed by: David Greenman <dg@root.com>
Submitted by Roger Hardiman.
Added ioctl TVTUNER_GETCHANSET to discover which regions the bktr driver
supports. Submitted by Vsevolod Lobko <seva@alex-ua.com>
Added BT848_GPIO_SET_EN,BT848_GPIO_SET_DATA (and GETs) to allow user land
control of the GPIO pins. This allows a Radio module on the GPIO port
to be controlled. Submitted by Vsevolod Lobko <seva@alex-ua.com>
The kernel option BKTR_GPIO_ACCESS must be used to enable the GPIO ioctls.
Submitted by: Roger Hardiman and Vsevolod Lobko <seva@alex-ua.com>
the same name. Silently return EEXIST if this happens.
vinum_scandisk: Collect drive numbers, not pointers, to avoid problems
of relocated drives.
Tripped-over-by: Bernd Walter <ticso@cicely.de>
time out on an operation. Under these circumstances, vinum(8) will
automatically start another daemon. Add a pid for the daemon, so that
an overtaken daemon will discover that it's no longer in favour, and
will crawl into a corner and die.
peripheral drivers can determine where in the devstat(9) list they are
inserted.
This requires recompilation of libdevstat, systat, vmstat, rpc.rstatd, and
any ports that depend on the devstat code, since the size of the devstat
structure has changed. The devstat version number has been incremented as
well to reflect the change.
This sorts devices in the devstat list in "more interesting" to "less
interesting" order. So, for instance, da devices are now more important
than floppy drives, and so will appear before floppy drives in the default
output from systat, iostat, vmstat, etc.
The order of devices is, for now, kept in a central table in devicestat.h.
If individual drivers were able to make a meaningful decision on what
priority they should be at attach time, we could consider splitting the
priority information out into the various drivers. For now, though, they
have no way of knowing that, so it's easier to put them in an easy to find
table.
Also, move the checkversion() call in vmstat(8) to a more logical place.
Thanks to Bruce and David O'Brien for suggestions, for reviewing this, and
for putting up with the long time it has taken me to commit it. Bruce did
object somewhat to the central priority table (he would rather the
priorities be distributed in each driver), so his objection is duly noted
here.
Reviewed by: bde, obrien
define. Add a new config flag param (ISP_CFG_NONVRAM) whose intent it is
to cause NVRAM to be ignored. Add ISPASYNC_LOOP_DOWN and ISPASYNC_LOOP_UP
isp_async enums.
Amazingly enough, I did all my scsi_sa work recently without realizing
that I had a broken isp card whose (unchangeable- it's an old old old
isp1020) NVRAM has sync mode enabled, but disconnect/reconnect disabled-
the ISP_CFG_NONVRAM is definitely warranted when you want to bloody well
ignore the NVRAM and set something sensible.
