Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r251516

Implement foreign device handling.

PR: kern/172091

MFC r244123 Add CTLFLAG_RWTUN define
MFC r247367 Fix non-recusive mutex MFI I/O lock
MFC r247369 Fix a large amount of bugs in MFI that cause panics

Approved by: pjd (mentor)

MFC r249257:
Add support for getting and setting BBU properties related to battery
relearning. Specifically, add subcommands to mfiutil(8) which allow the
user to set the BBU and autolearn modes when the firmware supports it,
and add a subcommand which kicks off a battery relearn.

MFC r249258:
Switch to a 2-clause license.

MFC r235634

Fix and update battery status bits according to linux driver

MFC r235014: Rebuild fix and LBA calculation fix for ThunderBolt
based cards.

MFC r235016: Some style improvements.

MFC r235040: Fix the returns in mfi_tbolt_sync_map_info that I added.

PR: 167226

MFC r233711:
Major update to driver to support for Drake Skinny and ThunderBolt cards.

MFC r233768:
Change typedef atomic_t to struct mfi_atomic to avoid name space
collision and some couple more style changes.

MFC r233805:
Move struct megasas_sge from mfi_ioctl.h to mfivar.h so we can
remove including machine/bus.h. Add some more mfi_ prefixes to
avoid name space pollution.

MFC r233877:
- Do not include machine/atomic.h. It is no longer necessary since r233768.
- Remove bogus "atomic" macros and a read-only variable from softc.

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Support controllers whose option ROM is disabled in the BIOS by kicking
the firmware so that it boots.

PR: kern/154978
Submitted by: Andrew Boyer aboyer of averesystems com
Obtained from: LSI
MFC after: 1 week

There are a couple of structs in mfireg.h with members named 'class'.
These cause problems when trying to include the header in a C++ project.
Rename them to 'evt_class', and track the change in mfi and mfiutil.

Submitted by: Mark Johnston
Sponsored by: Sandvine Incorporated
Reviewed by: jhb@
MFC after: 1 week

Update PD state firmware definitions: add copyback, system.

Reviewed by: jhb
Approved by: avg (mentor)
MFC after: 1 week

ntroduce mfiutil, a basic utility for managing LSI SAS-RAID & Dell PERC5/6
controllers. Controller, array, and drive status can be checked, basic
attributes can be changed, and arrays and spares can be created and deleted.
Controller firmware can also be flashed.

This does not replace MegaCLI, found in ports, as that is officially sanctioned
and supported by LSI and includes vastly more functionality. However, mfiutil
is open source and guaranteed to provide basic functionality, which can be
especially useful if you have a problem and can't get MegaCLI to work.

Approved by: re
Obtained from: Yahoo! Inc.

- Fix from jhb for failing I/O request when bus_dmamap_load fails.
- Fix to ioctl path in which the length could be 0 which means
no data in/out from LSI.
- Fix to ioctl path in which the data in the sense data space
of the ioctl packet is a really a pointer to some location in
user-space. From LSI re-worked a bit by me.
- Add HW support for next gen cards from LSI.

Thanks to LSI for their support!

Submitted by: jhb, LSI
MFC after: 3 days

Fix some bugs in dealing with DCMD'd without data. MegaCli was sending
down some DCMD's without any data. Thanks to Dell and LSI for helping
to provide clues to figure out this problem. Now MegaCli can upgrade
the firmware and should work identical when run on Linux.

Reviewed by: scottl, LSI
MFC after: 1 day

Update the MFI driver to support new "1078" series of hardware. This
includes the upcoming Dell PERC6 series. Many thanks to LSI for
contributing this code.

Submitted by: LSI
Approved by: re

Teach the mfi(4) driver to handle requests from userland management
applications to add and remove volumes.

MFC after: 1 week
Approved by: re (bmah)
Reviewed by: ambrisko, scottl

Catch up to driver changes required for the mfip sub-driver.

Some relatively minor changes and bug fixes:
1) s/mi/mfi/ in FreeBSD ioctl path
2) add in "\n" on various failure messages
3) cap the length of time to abort an AEN command
4) fix passing sense data back to user to make Dell's Linux firmware
upgrade tool happy.
5) bump the MFI_POLL_TIMEOUT_SECS from 10s to 50s since the
firmware flash command can take ~40s to return.

This is some clean-up and enables RAID firmware to updated via Dell's
tool. Note Dell's tool requires the updates to the Linux emulator
that has been done in -current with TLS etc.

I need to discuss with scottl how to better submit mfi commands to
the firmware via the ioctl path so we don't do it in polled mode.

- Add a command validator for use in debugging.
- Fix the locking protocol to eliminate races between normal I/O and AENs.
- Various small improvements and usability tweaks.

Sponsored by: IronPort
Portions Submitted by: Doug Ambrisko

Change the class from uint8_t to int8_t so people can filter on >0
events.

Change the event log dump on initial boot to use get_event versus
AEN. This makes the boot messages cleaner. I now know how this
structure works so I can implement it versus guessing. Remove the
not ready type code since it is ready now.

I added the time stamp/locale/class so people can parse messages better.
Create a sysctl so that we can set the locale/class level.

Instead of using scsi probes to do device discovery, use the firmware
commands to grab the device listing. This resolves issues using
multiple volumes, where each volume was actually internally pointing
to target 0.

Add in a bunch of things to the mfi driver:
- Linux ioctl support, with the other Linux changes MegaCli
will run if you mount linprocfs & linsysfs then set
sysctl compat.linux.osrelease=2.6.12 or similar. This works
on i386. It should work on amd64 but not well tested yet.
StoreLib may or may not work. Remember to kldload mfi_linux.
- Add in AEN (Async Event Notification) support so we can
get messages from the firmware when something happens.
Not all messages are in defined in event detail. Use
event_log to try to figure out what happened.
- Try to implement something like SIGIO for StoreLib. Since
mrmonitor doesn't work right I can't fully test it. StoreLib
works best with the rh9 base. In theory mrmonitor isn't
needed due to native driver support of AEN :-)
Now we can configure and monitor the RAID better.

Submitted by: IronPort Systems.

Add a driver for the new LSI MegaRAID SAS controller family. The 'MFI' name
is derived from the phrase 'MegaRAID Firmware Interface' used by LSI. This
driver provides a block interface to logical disks on the card and a minimal
management device. It is MPSAFE, INTR_FAST, and 64-bit capable.

Thanks to Dell for providing hardware to test with and IronPort for
sponsoring the work.

Sponsored by: Dell, Ironport
MFC After: 3 days