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 r267368:

Apply vendor fixes to the High Point drivers:

- Don't call xpt_free_path() in os_query_remove_device() and
always return TRUE.
- Update os_buildsgl() to support build logical SG table which
will be used by lower RAID module.
- Return CAM_SEL_TIMEOUTstatus for SCSIcommand failed as target
missing.

Many thanks to HighPoint for providing this driver update.

Submitted by: Steve Chang
Reviewed by: mav
Approved by: re (gjb)

MFC r255320:

Return BUS_PROBE_DEFAULT instead of BUS_PROBE_SPECIFIC.

This change is a 9.2-RELEASE candidate.

MFC r249468:
Stop abusing xpt_periph in random plases that really have no periph related
to CCB, for example, bus scanning. NULL value is fine in such cases and it
is correctly logged in debug messages as "noperiph". If at some point we
need some real XPT periphs (alike to pmpX now), quite likely they will be
per-bus, and not a single global instance as xpt_periph now.

MFC r252867:

Import HighPoint DC Series Data Center HBA (DC7280 and R750) driver.
This driver works for FreeBSD/i386 and FreeBSD/amd64 platforms.

Many thanks to HighPoint for providing this driver.

(This changeset have not included changes found in 249468 and 246713)

MFC r252852:

Update hpt27xx(4) driver to address a problem reported by FreeNAS
user, where when more than one hpt27xx adapters are being used,
the "unit number" stays at 0.

Many thanks to HighPoint for providing this driver update.

(This changeset have not included change found in 249468)

Big MFC of the physbio changes necessary for unmapped I/O. These changes
have been in production at Netflix for several months with significant
success.

MFC r246713:

Reform the busdma API so that new types may be added without modifying
every architecture's busdma_machdep.c. It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code. The MD busdma is then given a chance to do any final processing
in the complete() callback.

MFC r249538:
Some compilers issue a warning when wider integer is casted to narrow
pointer. Supposedly shut down the warning by casting through
uintptr_t.

MFC r251479:
Simplify the checking of flags for cam_periph_mapmem(). This gets rid of
a lot of code redundancy and grossness at very minor expense.

MFC r251837:
MFC r251842:
Add infrastructure for doing compatibility shims, as has been sorely
needed for the last 10 years. Far too much of the internal API is
exposed, and every small adjustment causes applications to stop working.
To kick this off, bump the API version to 0x17 as should have been done
with r246713, but add shims to compensate. Thanks to the shims, there
should be no visible change in application behavior.

Submitted by: kib, jeffr
Approved by: kib
Obtained from: Netflix

MFC r245768:

- Don't include date and time the driver is built, this is useful for
generating binary diffs.
- Constify a few strings used in the driver.
- Style changes to make the driver compile with default clang settings.

Approved by: HighPoint Technologies

MFC r241844:
remove duplicate semicolons where possible.

Approved by: cperciva (implicit)

Toss bogus mergeinfo.

MFC r235634

Fix and update battery status bits according to linux driver

MFC r228940:

Import the first release of HighPoint RocketRAID 27xx SAS 6Gb/s HBA card
driver. This driver works for FreeBSD/i386 and FreeBSD/amd64 platforms.

Many thanks to HighPoint for providing this driver.

Import the first release of HighPoint RocketRAID 27xx SAS 6Gb/s HBA card
driver. This driver works for FreeBSD/i386 and FreeBSD/amd64 platforms.

Many thanks to HighPoint for providing this driver.

MFC after: 2 weeks