r356895 manu Jan. 19, 2020, 8:04 p.m.
This is a qspi driver for the Xilinx Zynq-7000 chip.
It could be useful for anyone wanting to boot a system from flash memory
instead of SD cards.

Submitted by:	Thomas Skibo (thomasskibo@yahoo.com)
Differential Revision:	https://reviews.freebsd.org/D14698
r356894 emaste Jan. 19, 2020, 7:57 p.m.
r356893 manu Jan. 19, 2020, 7:56 p.m.
This method will set the desired voltaged based on values in the DTS.
It will not enable the regulator, this is the job of either a consumer
or regnode_set_constraint SYSINIT if the regulator is boot_on or always_on.

Reviewed by:	mmel
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D23216
r356892 emaste Jan. 19, 2020, 7:56 p.m.
x86 needs bootstrap GNU as for assembling a few files, and powerpc needs
GNU ld.bfd for linking 32-bit objects.  All other targets either fully
use in-tree Clang and lld, or rely on external toolchain.

Sponsored by:	The FreeBSD Foundation
r356891 manu Jan. 19, 2020, 7:51 p.m.
Not all pins in Allwinner have interrupts support so we rely
on the padconf data to add the proper caps when pin_getcaps is called.
The pin is switch to the specific "eint" function during setup_intr and
switched back to its old function in teardown_intr.
Only INTR_MAP_DATA_GPIO is supported for now.

MFC after:	1 month
r356890 emaste Jan. 19, 2020, 7:47 p.m.
claims about being unable to build if set.  Those cautions are no longer
universally true, and most FreeBSD targets can function more or less
without enabling GNU Binutils.  Just remove the cautions.

Sponsored by:	The FreeBSD Foundation
r356889 emaste Jan. 19, 2020, 7:16 p.m.
GNU as 2.17.50 is currently required by amd64 and i386 for at least one
file that cannot be assembled by Clang's integrated assembler (IAS).
Other supported CPU architectures either use Clang IAS for all assembly
files, or rely on external toolchain.

Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23180
r356888 manu Jan. 19, 2020, 7:14 p.m.
Add a eint_bank member to the allwinner_pins structure.
On Allwinner SoCs not all pins can do interrupt.
Older SoC (A10/A13 and A20) there is a maximum number of interrupts
set to 32 and all the configuration is done in the same registers.
While on "newer" SoCs (>=A31) interrupts registers are splitted per
pin bank (i.e. all interrupts available in bank B will be configured
with a sets of registers and the one in bank G in another set).
While here set the names to all interrupts function to
pX_eintY where X is the bank name and Y the interrupt number.

To whom ever in the future look at the H5 manual and notice that the bank F
have interrupts support : This isn't true, trust me.

MFC after:	1 month
r356887 jeff Jan. 19, 2020, 6:36 p.m.
now.  Eliminate the dead code that supports it.

Approved by:	kib, markj
Differential Revision:	https://reviews.freebsd.org/D22908
r356886 jeff Jan. 19, 2020, 6:30 p.m.

Shadow objects are marked with a COLLAPSING flag while they are collapsing with
their backing object.  This gives us an explicit test rather than overloading
paging-in-progress.  While split is on-going we mark an object with SPLIT.
These two operations will modify the swap tree so they must be serialized
and swap_pager_getpages() can now directly detect these conditions and page
more conservatively.

Callers to vm_object_collapse() now will reliably wait for a collapse to finish
so that the backing chain is as short as possible before other decisions are
made that may inflate the object chain.  For example, split, coalesce, etc.
It is now safe to run fault concurrently with collapse.  It is safe to increase
or decrease paging in progress with no lock so long as there is another valid
ref on increase.

This change makes collapse more reliable as a secondary benefit.  The primary
benefit is making it safe to drop the object lock much earlier in fault or
never acquire it at all.

This was tested with a new shadow chain test script that uncovered long
standing bugs and will be integrated with stress2.

Reviewed by:	kib, markj
Differential Revision:	https://reviews.freebsd.org/D22908
r356885 jeff Jan. 19, 2020, 6:18 p.m.
Reviewed by:	kib, markj
Differential Revision:	https://reviews.freebsd.org/D22908
r356884 mjg Jan. 19, 2020, 5:47 p.m.
Since r356672 ("vfs: rework vnode list management") there is nothing to do
apart from altering freevnodes count, but this much can be safely done based
on the result of atomic_fetchadd.

Reviewed by:	kib
Tested by:	pho
Differential Revision:	https://reviews.freebsd.org/D23186
r356883 mjg Jan. 19, 2020, 5:05 p.m.
Fixes booting on RISC-V where it does happen to not be equivalent.

Reported by:	lwhsu
r356882 carlavilla Jan. 19, 2020, 4:24 p.m.
Patch by:	carlavilla@(doc-committer)
Approved by:	bcr@(mentor)
r356881 emaste Jan. 19, 2020, 2:46 p.m.
Compressing .txz packages can be rather slow, and speed is likely more
important than disk space during development.  Allow package format to
be set via PKG_FORMAT make variable.

Reviewed by:	bapt
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23257