Mfh r292839

Allocate separate scratch space for scanner purposes.

This space does not require DMA syncing. It reduces lock scope of the DMA
scratch space. It allows whole DMA scratch space to be used to I/O, s

Allocate separate scratch space for scanner purposes.

This space does not require DMA syncing. It reduces lock scope of the DMA
scratch space. It allows whole DMA scratch space to be used to I/O, so now
we can fetch up to ~1000 ports from SNS.

Due to the last fact, increase maximal number of ports from 256 to 1024.

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Make port logins asynchronous, following r292739 logic.

This is even more important since it involves more network operations and
more prone to delays and timeouts.

Make virtual ports control asynchronous.

Before this change virtual ports control IOCBs were executed synchronously
via Execute IOCB mailbox command. It required exclusive use of scratch
space of d

Make virtual ports control asynchronous.

Before this change virtual ports control IOCBs were executed synchronously
via Execute IOCB mailbox command. It required exclusive use of scratch
space of driver and mailbox registers of the hardware. Because of that
shared resources use this code could not really sleep, having to spin for
completion, blocking any other operation.

This change introduces new asynchronous design, sending the IOCBs directly
on request queue and gracefully waiting for their return on response queue.
Returned IOCBs are identified with unified handle space from r292725.

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Unify handles allocation for initiator and target IOCBs.

I am not sure why this was split long ago, but I see no reason for it.
At this point this unification just slightly reduces memory usage, but

Unify handles allocation for initiator and target IOCBs.

I am not sure why this was split long ago, but I see no reason for it.
At this point this unification just slightly reduces memory usage, but
as next step I plan to reuse shared handle space for other IOCB types.

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Clear virtual port's port database when disabling it.

Previously it was done only on full chip reinit, that caused old ports
resurrect in case of virtual port reenabling.

Some polishing for command timeouts handling.

Fix speed setting by NVRAM for 24xx and above chips.

MFH @r292599

This includes the pluggable TCP framework and other chnages to the
netstack to track for VNET stability.

Security: The FreeBSD Foundation

Guess NVRAM address for 16Gbps Qlogic cards.

I have feeling this approach is wrong, but it works for me so far and
it is better then nothing.

There is no priority request queue on 16Gig chips.

Catch up with head.

Enable interrupt handshake for 16Gig chips.

We don't support MSI-X so far, so it is always required.

Catch up with head, mostly to merge r291665 with the changes in this branch.

Add initial support for 16Gbps FC QLogic chips.

I still don't know how to read NVRAM there, so WWNs and other parameters
are incorrect, but other then that driver seems like attaching normally.

Catch up with head.

One more round of port scanner rewrite.

- Make scan aborted by event restart immediately and infinitely.
- Improve handling of some loop events from firmware.
- Remove loop down timer, adding its

One more round of port scanner rewrite.

- Make scan aborted by event restart immediately and infinitely.
- Improve handling of some loop events from firmware.
- Remove loop down timer, adding its functionality to scanner thread.
- Some more unification and simplification.

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Catch up with head.

Rename ASYNC_LIP_F8 to ASYNC_LIP_NOS_OLS_RECV.

New name better repsents its meaning for modern chips.

Fix target mode support for Qlogic 2200 FC adapters.

Now target mode works for all supported FC adapters except ancient 2100,
which is not tested.

Rip off target mode support for parallel SCSI QLogic adapters.

Hacks to enable target mode there complicated code, while didn't really
work. And for outdated hardware fixing it is not really intere

Rip off target mode support for parallel SCSI QLogic adapters.

Hacks to enable target mode there complicated code, while didn't really
work. And for outdated hardware fixing it is not really interesting.

Initiator mode tested with Qlogic 1080 adapter is still working fine.

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Explicitly call SEND CHANGE REQUEST for pre-24xx chips in target mode.

While later firmware always registers for RSCN requests, older one does
it only in initiator mode. But in target mode there RS

Explicitly call SEND CHANGE REQUEST for pre-24xx chips in target mode.

While later firmware always registers for RSCN requests, older one does
it only in initiator mode. But in target mode there RSCN can be the only
way to detect gone intiator.

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Gracefully stop firmware before resetting chip when changing role.

Add some more asynchronous event status codes.

Add mode mailbox command codes.