This allows us to play nicely on SANs when we have target mode
enabled in f/w but have neither the scsi_targbh enabled or
scsi_targ with a target enabled.
the CAM_NEW_TRAN_CODE that has been in the tree for some years now.
This first step consists solely of adding to or correcting
CAM_NEW_TRAN_CODE pieces in the kernel source tree such
that a both a GENERIC (at least on i386) and a LINT build
with CAM_NEW_TRAN_CODE as an option will compile correctly
and run (at least with some the h/w I have).
After a short settle time, the other pieces (making
CAM_NEW_TRAN_CODE the default and updating libcam
and camcontrol) will be brought in.
This will be an incompatible change in that the size of structures
related to XPT_PATH_INQ and XPT_{GET,SET}_TRAN_SETTINGS change
in both size and content. However, basic system operation and
basic system utilities work well enough with this change.
Reviewed by: freebsd-scsi and specific stakeholders
Unfortunately, the QUEUE FULL event only tells you Bus && Target.
It doesn't tell you lun. In order for the XPT_REL_SIMQ action to
work, we have to have a real lun. But which one? For now, just
iterate over MPT_MAX_LUNS.
Practically speaking, this is only going to be happening for lower
quality SAS or SATA drives behind the SAS controller, which means
only lun 0, so it's not so bad.
Helpful Reminder Nagging from: John Baldwin, Fred Whiteside
MFC after: 5 days
is to able to be called after *all* attach and enable events are done.
We establish a SYSINIT hook to call this handler. The current usage for it
is to add scsi target resources *after* all enables are done. There seems
to be some dependencies between different halves of a dual-port with respect
to target mode.
Put in more meaningful event messages for some events- in particular
QUEUE FULL events so we can see what the queue depth was when the
IOC sent us this message.
MFC after: 1 week
desired role configuration instead of existing role. This gets
us out of the mess where we configured a role of NONE (or were
LAN only, for example), but didn't continue to attach the CAM
module (because we had neither initiator nor target role
set). Unfortunately, the code that rewrites NVRAM to match
actual to desired role only works if the CAM module attaches.
MFC after: 2 weeks
mark it as timed out. Don't try and free the config
request for read_cfg_header that times out because
it's still active. Put in code for the config reply
handler that will then free up timed out requests.
Fix the FC_PRIMITIVE_SEND completion to not try
and free a command twice. Dunno how this possibly
could have been working for awhile.
MFC after: 2 weeks
out ELS buffers but *don't* hang out commands,
we hang folks on the SAN because the LSI-Logic
f/w apparently sends back BUSY or QFULL or some
darn thing.
If we add command buffers, we have to respond to
them sensibly even if we don't have any upstream
listeners (scsi_targ or scsi_targ_bh), so put in
some local command reponse stuff.
MFC after: 2 weeks
actually go write the config page. This fixes the long standing
problem about updating NVRAM on Fibre Channel cards and seems
so far to not break SPI config page writes.
Put back role setting into mpt. That is, you can set a desired role
for mpt as a hint. On the next reboot, it'll pick that up and redo
the NVRAM settings appropriately and warn you that this won't take
effect until the next reboot. This saves people the step of having
to find a BIOS utilities disk to set target and/or initiator role
for the MPT cards.
Don't enable/disable I/O space except for SAS adapters.
This fixes a problem with VMware 4.5 Workstation.
Fix an egregious bug introduced to target mode so it actually
will not panic when you first enable a lun.
Minor fixes:
Take more infor from port facts and configuration pages.
MFC after: 1 week
Clean out the abortive start to homegrown, per-mpt,
Domain Validation. This should really be done at a
higher level.
Use the PIM_SEQSCAN flag for U320- this seems to correct
cases of being unable to consistently negotiate U320 in
the cases where I'd seen this before.
Between this and other recent checkins, this driver is
pretty close to being ready for MFC.
Reviewed by: scottl, ken, scsi@
MFC after: 1 week
fixing speed negotiation.
Also fix the mpt_execute_req function to actually
match mpt_execute_req_a64. This may explain why
i386 users were having more grief.
can see the results of SPI negotiation w/o being overwhelmed
with other crap).
+ For U320 devices, check against both Settings *and* DV flags before
deciding whether we need to skip actual SPI settings for a device.
+ Go back to creating a 'physical disk' side of a raid/passthru bus that
is limited to the number of maximum physical disks. Actually, this isn't
probably *quite* right yet for one RAID volume, and if we ever end up
with finding a device that supports more than one RAID volume (not likely),
it probably won't quite be right either.
The problem here is that the creating of this 'physical' passthru sim is
just a cheap way to leverage off the CAM midlayer to do our negotiation
for us on the subentities that make up a RAID volume. It almost causes
more trouble than it is worth because we have to remember which side
we're talking to in terms of forming commands and which target ids are
real and so on. Bleah.
+ Skip trying to actually do SPI settings for the RAID volumes on the
real side of the raid/passthru bus pair- this just confuses the issue.
The underlying real physical devices will have the negotiation performed
and the Raid volume will inherit the resultant settings. At the sime time,
non-RAID devices can be on the same real bus, so *do* perform negotiations
with them.
+ At the end of doing all of the settings twiddling, *ahem*, remember to
go update the settings on the card itself (dunno how this got nuked).
At this point, negotiations *seem* to be being done (again) correctly for
both RAID volumes and their subentities. And they seem to be *mostly*
now right for other non-RAID entities on the same bus (I ended up with
3 out of 8 other disks still at narror/async- haven't the slightest
idea why yes).
Finally, negotiations on a normal bus seem to work (again).
There's still more work coming into this area, but we're in the
final stretch.
the passed target id is one of the RAID VolumeID. This result
is used to decide whether to try and do actual SPI negotiations
on the real side of the raid/passthru bus pair. The reason we
check this is that we can have both RAID volumes and real devices
on the same bus.
lost one set to a peninsula power failure last night. After
this, I can see both submembers and the raid volumes again,
but speed negotiation is still broken.
Add a mpt_raid_free_mem function to centralize the resource
reclaim and fixed a small memory leak.
Remove restriction on number of targets for systems with IM enabled-
you can have setups that have both IM volumes as well as other devices.
Fix target id selection for passthru and nonpastrhu cases.
Move complete command dumpt to MPT_PRT_DEBUG1 level so that just
setting debug level gets mostly informative albeit less verbose
dumping.
state structure. This field is only for CCBs that are associated with
actions that are occurring on the HBA (i.e., XPT_CONT_IO actions).
This way we also don't get confused when the upstream listener stalls
try and look at a CCB which has already been freed (by CAM).
+ Add boatloads of KASSERTs and *really* check out more locking
issues (to catch recursions when we actually go to real locking
in CAM soon). The KASSERTs also caught lots of other issues like
using commands that were put back on free lists, etc.
+ Target mode: role setting is derived directly from port capabilities.
There is no need to set a role any more. Some target mode resources
are allocated early on (ELS), but target command buffer allocation
is deferred until the first lun enable.
+ Fix some breakages I introduced with target mode in that some commands
are *repeating* commands. That is, the reply shows up but the command
isn't really done (we don't free it). We still need to take it off the
pending list because when we resubmit it, bad things then happen.
+ Fix more of the way that timed out commands and bus reset is done. The
actual TMF response code was being ignored.
+ For SPI, honor BIOS settings. This doesn't quite fix the problems we've
seen where we can't seem to (re)negotiate U320 on all drives but avoids
it instead by letting us honor the BIOS settings. I'm sure this is not
quite right and will have to change again soon.
