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 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 r252851:

Add PCI IDs for HighPoint RocketRAID 4521, 3620, 3622 and 3640
controllers. Update the hptiop(4) manual page to reflect this
as well as mentioning that some cards are already end-of-life.

Many thanks to Highpoint for providing this driver update.

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 r250050:

Add missing braces.

Submitted by: Sascha Wildner <saw online de>
Obtained from: DragonFly

MFC r242086:

Update hptiop(4) to version 1.8, which added support for HighPoint
RocketRAID 4500 series.

Many thanks to HighPoint Technologies for their continued support
of FreeBSD!

Submitted by: HighPoint Technologies

MFC r239084:

Add PCI IDs for various new High Point RocketRAID 43xx and 3xxx devices.

Obtained from: FreeNAS

MFC r236379:
Adding missing dependancies for loading hptiop(4), hptmv(4) and isp(4) as modules.

PR: kern/166239
Approved by: cperciva (implicit)

MFC 232854,232874,232882,232883,232886 for bus_get_dma_tag()

MFC: r227912

- Just use cam_calc_geometry(9) on newer version of FreeBSD rather than
duplicating it.
- In hptmv(4) and hptrr(4) use __FBSDID and DEVMETHOD_END.

Merge from r225950:

Set the sense residual properly.

Reviewed by: ken
Approved by: re (kib)

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

Approved by: re (implicit)

Add PCI ID for RocketRAID 4321 and 4322. A FreeNAS user have tested the
change on RocketRAID 4322.

Sponsored by: iXsystems, Inc.
MFC after: 3 days
Approved by: re (kib)

Report transport type in XPT_PATH_INQ.

PR: i386/147929
MFC after: 3 days

MFp4: Large set of CAM inprovements.

- Unify bus reset/probe sequence. Whenever bus attached at boot or later,
CAM will automatically reset and scan it. It allows to remove duplicate
code from many drivers.
- Any bus, attached before CAM completed it's boot-time initialization,
will equally join to the process, delaying boot if needed.
- New kern.cam.boot_delay loader tunable should help controllers that
are still unable to register their buses in time (such as slow USB/
PCCard/ CardBus devices), by adding one more event to wait on boot.
- To allow synchronization between different CAM levels, concept of
requests priorities was extended. Priorities now split between several
"run levels". Device can be freezed at specified level, allowing higher
priority requests to pass. For example, no payload requests allowed,
until PMP driver enable port. ATA XPT negotiate transfer parameters,
periph driver configure caching and so on.
- Frozen requests are no more counted by request allocation scheduler.
It fixes deadlocks, when frozen low priority payload requests occupying
slots, required by higher levels to manage theit execution.
- Two last changes were holding proper ATA reinitialization and error
recovery implementation. Now it is done: SATA controllers and Port
Multipliers now implement automatic hot-plug and should correctly
recover from timeouts and bus resets.
- Improve SCSI error recovery for devices on buses without automatic sense
reporting, such as ATAPI or USB. For example, it allows CAM to wait, while
CD drive loads disk, instead of immediately return error status.
- Decapitalize diagnostic messages and make them more readable and sensible.
- Teach PMP driver to limit maximum speed on fan-out ports.
- Make boot wait for PMP scan completes, and make rescan more reliable.
- Fix pass driver, to return CCB to user level in case of error.
- Increase number of retries in cd driver, as device may return several UAs.

Revert previous commit and add myself to the list of people who should
know better than to commit with a cat in the area.

Add necessary include.

Replace all calls to minor() with dev2unit().

After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by: kib

Update the hptiop driver to version 1.3. This adds support for the 4xxx
series of adapters. Thanks again to Highpoint for their continued support
of FreeBSD.

Submitted by: Highpoint Technologies

Prepare for future integration between CAM and newbus. xpt_bus_register
now takes a device_t to be the parent of the bus that is being created.
Most SIMs have been updated with a reasonable argument, but a few exceptions
just pass NULL for now. This argument isn't used yet and the newbus
integration likely won't be ready until after 7.0-RELEASE.

Introduce a driver for the Highpoint RocketRAID 3xxx series of controllers.
The driver relies on CAM.

Many thanks to Highpoint for providing this driver.