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History log of /src/sys/arch/alpha/pci/cia.c
RevisionDateAuthorComments
 1.81  04-Dec-2023  thorpej Convert the Alpha port's bus_space back-end to manage address space
with vmem(9) arenas (using statically-allocated private boundary tags
for very early-in-boot) rather than extent(9).

As a side-effect, there's arguments to some initialization functions
that are no longer required, so garbage-collect those, update all the
call sites.
 1.80  22-May-2022  andvar fix various small typos, mainly in comments.
 1.79  07-Aug-2021  thorpej Merge thorpej-cfargs2.
 1.78  04-Jul-2021  thorpej branches: 1.78.2;
Remove unnecessary #include <sys/malloc.h>
 1.77  19-Jun-2021  thorpej Don't use a bunch of switch() statements in the core logic drivers to select
the PCI interrupt initialization routine. Instead, register said routines
by systype in a link set, and look them up and invoke them in a new function
alpha_pci_intr_init().
 1.76  18-Jun-2021  thorpej Sprinkle some static.
 1.75  24-Apr-2021  thorpej branches: 1.75.2;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).
 1.74  11-Oct-2015  martin branches: 1.74.32;
Felix Deichmann in PR port-alpha/50326: cosmetic patch for Pyxis attach
message.
 1.73  06-Feb-2012  matt branches: 1.73.6; 1.73.24;
Do a minor cleanup of alpha (this will make applying pullups post branching
easier).
u_int{8,16,32,64}_t -> uint{*}_t
Change all old-style definitions to C89 prototypes.
Whitespace cleanup.
Constification in db_disasm.c
 1.72  14-Jun-2011  matt branches: 1.72.2; 1.72.6;
Major cleanup of alpha device drivers.
Switch to CFATTACH_DECL_NEW.
struct device * -> device_t
struct cfdata * -> cfdata_t
Use of device_xname. No direct access to struct device members.
Use aprint* (not complete).
 1.71  17-May-2011  dyoung branches: 1.71.2;
PCI_FLAGS_IO_ENABLED and PCI_FLAGS_MEM_ENABLED changed their functional
role in NetBSD (drivers are no longer supposed to write these to
pa_flags) without changing name. Correct that.

Rename PCI_FLAGS_IO_ENABLED to PCI_FLAGS_IO_OKAY and
PCI_FLAGS_MEM_ENABLED to PCI_FLAGS_MEM_OKAY, thus making their names
consistent with the other PCI flags and poisoning 3rd-party driver
sources that use the flags in the old bad way.

This patch produces no binary changes in this set of PCI kernels when
they are compiled w/o 'options DIAGNOSTIC' and w/ -V MKREPRO=yes:

algor P4032 P5064 P6032
alpha GENERIC
amd64 GENERIC XEN3_DOM0
arc GENERIC
atari HADES MILAN-PCIIDE
bebox GENERIC
cats GENERIC
cobalt GENERIC
evbarm-el ADI_BRH ARMADILLO9 CP3100 GEMINI GEMINI_MASTER GEMINI_SLAVE
evbarm-el GUMSTIX HDL_G IMX31LITE INTEGRATOR IQ31244 IQ80310 IQ80321
evbarm-el IXDP425 IXM1200 KUROBOX_PRO
evbarm-el LUBBOCK MARVELL_NAS NAPPI NSLU2 SHEEVAPLUG SMDK2800 TEAMASA_NPWR
evbarm-el TEAMASA_NPWR_FC TS7200 TWINTAIL ZAO425
evbmips-el AP30 DBAU1500 DBAU1550 MALTA MERAKI MTX-1 OMSAL400 RB153 WGT624V3
evbmips64-el XLSATX
evbppc EV64260 MPC8536DS MPC8548CDS OPENBLOCKS200 OPENBLOCKS266
evbppc OPENBLOCKS266_OPT P2020RDB PMPPC RB800 WALNUT
hp700 GENERIC
i386 ALL XEN3_DOM0 XEN3_DOMU
ibmnws GENERIC
iyonix GENERIC
landisk GENERIC
macppc GENERIC
mvmeppc GENERIC
netwinder GENERIC
ofppc GENERIC
prep GENERIC
sandpoint GENERIC
sbmips-el GENERIC
sgimips GENERIC32_IP2x GENERIC32_IP3x
sparc GENERIC_SUN4U KRUPS
sparc64 GENERIC
 1.70  15-Dec-2010  matt branches: 1.70.2;
Remove unneeded includes of <uvm/uvm_extern.h>
 1.69  14-Mar-2009  dsl branches: 1.69.4;
ANSIfy another 1261 function definitions.
The only ones left in sys are beyond by sed script!
(or in sys/dist or sys/external)
Mostly they have function pointer parameters.
 1.68  14-Mar-2009  dsl Change about 4500 of the K&R function definitions to ANSI ones.
There are still about 1600 left, but they have ',' or /* ... */
in the actual variable definitions - which my awk script doesn't handle.
There are also many that need () -> (void).
(The script does handle misordered arguments.)
 1.67  14-Mar-2009  dsl Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.
 1.66  16-Dec-2008  christos branches: 1.66.2;
replace bitmask_snprintf(9) with snprintb(3)
 1.65  28-Apr-2008  martin branches: 1.65.8;
Remove clause 3 and 4 from TNF licenses
 1.64  11-Dec-2005  christos branches: 1.64.26; 1.64.74; 1.64.76; 1.64.78;
merge ktrace-lwp.
 1.63  30-Aug-2004  drochner Phase out the use of a string as first "attach args" member to control
which bustype should be attached with a specific call to config_found()
(from a "mainbus" or a bus bridge).
Do it for isa/eisa/mca and pci/agp for now. These buses all attach to
an mi interface attribute "isabus", "eisabus" etc., and the autoconf
framework now allows to specify an interface attribute on config_found()
and config_search(), which limits the search of matching config data
to these which attach to that specific attribute.
So we basically have to call config_found_ia(..., "foobus", ...) where
such a bus is attached.
As a consequence, where a "mainbus" or alike also attaches other
devices (eg CPUs) which do not attach to a specific attribute yet,
we need at least pass an attribute name (different from "foobus") so
that the foo bus is not found at these places. This made some minor
changes necessary which are not obviously related to the mentioned buses.
 1.62  15-Jun-2003  fvdl branches: 1.62.2;
Handle 64bit DMA addresses on PCI for platforms that can (currently only
enabled on amd64). Add a dmat64 field to various PCI attach structures,
and pass it down where needed. Implement a simple new function called
pci_dma64_available(pa) to test if 64bit DMA addresses may be used.
This returns 1 iff _PCI_HAVE_DMA64 is defined in <machine/pci_machdep.h>,
and there is more than 4G of memory.
 1.61  01-Jan-2003  thorpej Use aprint_normal() for cfprint routines.
 1.60  02-Oct-2002  thorpej Use CFATTACH_DECL().
 1.59  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.58  16-May-2002  thorpej * Add "pcitag_t *pba_bridgetag" to pci_attach_args. This is set to
NULL for root PCI busses. For busses behind a bridge, it points to
a persistent copy of the bridge's pcitag_t. This can be very useful
for machine-dependent PCI bus enumeration code.
* Implement a machine-dependent pci_enumerate_bus() for sparc64 which
uses OFW device nodes to enumerate the bus. When a PCI bus that is
behind a bridge is attached, pci_attach_hook() allocates a new PCI
chipset tag for the new bus and sets it's "curnode" to the OFW node
of the bridge. This is used as a starting point when enumerating
that bus. Root busses get the OFW node of the host bridge (psycho).
* Garbage-collect "ofpci" and "ofppb" from the sparc64 port.
 1.57  26-Apr-2001  ross branches: 1.57.2; 1.57.4; 1.57.16;
o IEEE 754 floating-point completion code.
o Implement the architected FP_C "Floating Point Control Quadword"
 1.56  29-Jun-2000  mrg branches: 1.56.2;
remove include of <vm/vm.h>. <vm/vm.h> -> <uvm/uvm_extern.h>
 1.55  03-Apr-2000  thorpej Use the new cpu_amask variable rather than calling alpha_implver() and
alpha_amask() ourselves.
 1.54  19-Mar-2000  thorpej Put the code that enables/disables Pyxis interrupt lines in
cia_pyxis_intr_enable().
 1.53  26-Feb-2000  thorpej - Add a bus space method for getting the translation for a window.
- Add sysarch methods for "get bus window count", "get bus window",
and "pci conf read/write".

These are a hack, but they're what's necessary in order to make
XFree86 work in its current state.
 1.52  09-Feb-2000  thorpej Don't force BWX on Pyxis by default; it's just not reliable enough.
 1.51  06-Feb-2000  thorpej If we have a Pyxis with the DMA page crossing bug, don't allow coalescing
of adjacent DMA segments.

XXX This is still not perfect... but making it perfect will probably
require additions to the bus_dma interface and the ISA autoconfiguration
interface.
 1.50  01-Feb-2000  thorpej Always use BWX for bus access on Pyxis chips.
 1.49  04-Nov-1999  thorpej Don't do rd/line, rd/mult, or wr/inval on the buggy Miata 1's.
 1.48  04-Nov-1999  thorpej Tell the PCI layer that Memory Read Line, Memory Read Multiple, and
Memory Write and Invalidate are okay PCI commands to use.
 1.47  10-Apr-1999  cgd branches: 1.47.2; 1.47.8; 1.47.10; 1.47.14;
be more consistent about use of 'cputype'. e.g. it's in a header, don't
bother 'externing' it everywhere!
 1.46  29-Jul-1998  thorpej Split up using BWX for PCI config and bus access. Default to using BWX for
the former, but not the latter. Hopefully, this will address some problems
people have been experiencing w/ some devices on Pyxis systems when BWX
is used for bus access. (If it's not used for PCI config access, we can
get fatal machine checks while probing behind PCI-PCI bridges!!)
 1.45  26-Jun-1998  ross New platforms: Mikasa and Mikasa/Pinnacle, aka Pinkasa.

Like the 1000A, the AlphaServer 1000 has a daughtercard assembly that
integrates the CPU and core logic, so these can be ev4/apecs or ev5/cia.
New systype, and, sigh, another way of doing interrupts and another
mystery icu.

Kill off some EVCNT_COUNTERS calls, since [A] it has to be rewritten anyway
before it can be useful, and [B] #ifdefs do not belong at every call site,
a common API should be defined and the implementations conditionalized, not
all the calls. Duhh.
 1.44  24-Jun-1998  ross Call pci_1000a_pickintr() like on other platforms, but for 1000a expand
the iot, memt, and pc in the call so that pci_1000a_pickintr() (and the
other routines in that module) do not need to be aware of the core logic
type just to pass down memory and I/O space tags or to call the decompose
function.
 1.43  06-Jun-1998  thorpej - Don't call *_dma_init() twice; there's no need to. Just do it in *attach().
- Display Pyxis revision properly.
 1.42  05-Jun-1998  thorpej - Egads! There are Pyxis "Pass 1" chips that do not have the DMA bug!
Use the check recommended by the Digital Workstation engineers; look
for Miata 1 systems (i.e. with Intel SIO). From Andrew Gallatin.
- Update copyright (Pyxis and BWX).
 1.41  05-Jun-1998  thorpej On Pass 1 Pyxis, disable PCI Read Prefetching, and warn the user about
the DMA bug that exists on this Pyxis revision.
 1.40  05-Jun-1998  thorpej oops, read CNFG on all Pyxis revs.
 1.39  05-Jun-1998  thorpej Support for the Digital Personal Workstation [456]xx, a.k.a. Miata (systype
DEC_550). Mostly cloned from the EB164 systype, with some modifications
from myself, and a few more from Andrew Gellatin.
 1.38  04-Jun-1998  thorpej For whatever reason, the firmware seems to enable PCI loopback mode if it
also enables BWX. Make sure it's enabled if we have an old, buggy firmware
rev.
 1.37  04-Jun-1998  thorpej Add support for using BWX for PCI config space and PCI i/o and mem space
on the ALCOR2 and Pyxis. BWX is enabled iff:
- It hasn't been disabled by the user (patch `cia_use_bwx' or build cia.o
with the option "CIA_USE_BWX=0"),
- it's enabled in CIA_CSR_CNFG,
- we are running on an EV5-family processor,
- BWX is in the processor's capabilities mask.
 1.36  03-Jun-1998  thorpej Ok, now we _REALLY_ have Pyxis recognition correct. There are two systypes
that can have Pyxis: EB164 (AlphaPC164LX and AlphaPC164SX) and DEC_550 (Miata),
and these systypes/variations _always_ have Pyxis.
 1.35  14-May-1998  thorpej Garbage-collect the old confargs stuff that was used in the Early Days.
It isn't really appropriate anymore. Replace it with a real mainbus
attach args structure.
 1.34  12-May-1998  thorpej Use flags instead of a bunch of booleans. Add a "use bwx" flag.
 1.33  11-May-1998  thorpej Rework ALCOR/ALCOR2/Pyxis recognition Yet Again. (Actually, just the
way it's displayed, and mask off the revision once we've determined
which chip we're talking to.)
 1.32  28-Apr-1998  thorpej Try (again) to get the chip number right for Alcor and Pyxis, using the
following (iffy) hueristic:

CIA revision 1 -> 21171
CIA revision 2 -> 21172
CIA revision > 2 -> 21174
 1.31  12-Feb-1998  thorpej We can't count on the CIA revision register telling us if we're a 21171
or 21172, so make the chip/revsion output a little more sane.
 1.30  17-Jan-1998  thorpej Don't assume that we'll be using direct-mapped DMA for PCI.
 1.29  12-Jan-1998  thorpej Adjust for config changes.
 1.28  27-Oct-1997  thorpej Clean up printing of chipset revision/capabilities.
 1.27  17-Sep-1997  thorpej branches: 1.27.2;
If the CIA revision is >= 2, read the CIA configuration register, and
remember its contents. Print out a bit of information about the chip,
including whether or not it supports the EV56 BWX instructions.
 1.26  02-Sep-1997  thorpej cia_bus_ -> cia_swiz_bus_
 1.25  02-Sep-1997  thorpej Pull in DEC_EB164 and DEC_KN20AA options.
 1.24  02-Sep-1997  thorpej Nuke the idea of <machine/options.h>. It completely defeats the purpose
of fine-grain option dependencies.
 1.23  02-Sep-1997  thorpej Fix oversight in a previous commit.
 1.22  02-Sep-1997  thorpej Treat bus space tags more like pci chipset tags and bus dma tags: allocate
them statically within a chipset's state structure, and pass them to
the *_bus_{io,mem}_init() functions.
 1.21  06-Jun-1997  thorpej branches: 1.21.4; 1.21.6;
Pull thorpej-bus-dma branch into mainline.
 1.20  10-Apr-1997  cgd branches: 1.20.2;
pass memory- and i/o-enabled flags down via the PCI bus and device attach
arguments, so that a device can tell if its memory and I/O spaces are
enabled. The flags are cleared, depending on the contents of devices CSR
registers, in the machine-independent PCI bus code.
 1.19  07-Apr-1997  cgd by default, provide RCS IDs for NetBSD/alpha kernel files in kernel binaries.
This can be disabled (to save a bit of space) with the NO_KERNEL_RCSIDS
options, which is present but commented out in the ALPHA config file.
In ELF-format kernels, these strings are present in the kernel binary but
are not loaded into memory. (In ECOFF-format kernels, there's no easy way
to keep them from being loaded, so they _are_ loaded into memory.)
 1.18  07-Apr-1997  cgd clean up NetBSD RCS ID strings, include machine/options.h
 1.17  06-Apr-1997  cgd clean up some #ifdefs
 1.16  08-Dec-1996  cgd remove all traces of __BROKEN_INDIRECT_CONFIG (except in shared drivers)
 1.15  05-Dec-1996  cgd update these so they compile whether or not __BROKEN_INDIRECT_CONFIG
is defined.
 1.14  25-Nov-1996  cgd branches: 1.14.2;
update for new extent management code. Most importantly, we can't call
the chipset space init functions multiple times, since that would clobber
extent allocations made between the two calls.
 1.13  11-Nov-1996  cgd preliminary support for the EB164. The EB164 is more or less a 'normal'
21164 + 21172 box, with Yet Another Way of doing interrupts. The
interrupt mapping and handling code hasn't been written yet, and none
of this code has been tested. (Checkpoint of work in progress.)
 1.12  23-Oct-1996  cgd update for new bus.h macros. bus_io_* and bus_mem_* integrated into
single bus_space_* framework. Unfortunately, bus_space_{read,write}_*
operations still imply barriers. That will change soon.
 1.11  13-Oct-1996  christos backout previous kprintf change
 1.10  10-Oct-1996  christos printf -> kprintf, sprintf -> ksprintf
 1.9  27-Aug-1996  cgd change cfprint_t type definition to take a const char *, rather than
a char *, because that's what was really intended, and because
if the print function modifies the string, various things could become
unhappy (so the string should _not_ be modified).
 1.8  11-Jul-1996  cgd some cleanup for -Wall
 1.7  09-Jul-1996  cgd clean and update for new defintions, prototypes, etc.
 1.6  10-Jun-1996  cgd read value of HAE_MEM and HAE_IO, so that the bus_* functions can
do window recognition correctly.
 1.5  13-Apr-1996  cgd branches: 1.5.4;
update for new ISA/EISA/PCI/'bus' interfaces. Untested
 1.4  12-Apr-1996  cgd clean up copyrights and RCS IDs
 1.3  12-Apr-1996  cgd partially update for new ISA/EISA/PCI and 'bus' interfaces. not yet
complete, or tested.
 1.2  17-Mar-1996  thorpej New device attachment scheme:

- split softc size and match/attach out from cfdriver into
a new struct cfattach.

- new "attach" directive for files.*. May specify the name of
the cfattach structure, so that devices may be easily attached
to parents with different autoconfiguration semantics.
 1.1  23-Nov-1995  cgd wholesale update from my NetBSD/Alpha source tree. Includes:
Support for AXPpci CPUs,
Support for AlphaStation 600 CPUs,
new boot block structure, which requires an 'installboot'
program and works a lot like the NetBSD/sparc boot blocks.
 1.5.4.1  10-Jun-1996  cgd pull up from trunk:
>read value of HAE_MEM and HAE_IO, so that the bus_* functions can
>do window recognition correctly.
 1.14.2.5  12-Aug-1997  cgd sync with -current as of August 11, 1997
 1.14.2.4  07-Jun-1997  cgd syng thorpej-bus-dma changes with alpha-nwscons branch
 1.14.2.3  01-Jun-1997  cgd sync the nwscons branch up with yesterday's version of the trunk.
Lots of conflicts/changes because of the RCS Id format changes.
Also, a few cleanups and corrections.
 1.14.2.2  08-Dec-1996  cgd sync __BROKEN_INDIRECT_CONFIG removal with trunk.
 1.14.2.1  07-Dec-1996  cgd mostly sync with changes on the trunk
 1.20.2.1  23-May-1997  thorpej - Garbage-collect all DMA-related initialization, calling a separate
*_dma_init() function instead.
- Pass the appropriate bus dma tag to children.
 1.21.6.3  22-Sep-1997  thorpej Update marc-pcmcia branch from trunk.
 1.21.6.2  04-Sep-1997  thorpej Update marc-pcmcia branch from trunk.
 1.21.6.1  01-Sep-1997  thorpej Repair marc-pcmcia branch.
 1.21.4.1  23-Aug-1997  thorpej Update marc-pcmcia branch from trunk.
 1.27.2.1  27-Oct-1997  thorpej Pull up from trunk: Clean up printing of chipset revision/capabilities.
 1.47.14.1  27-Dec-1999  wrstuden Pull up to last week's -current.
 1.47.10.1  14-Nov-1999  fvdl Sync with -current.
 1.47.8.1  20-Nov-2000  bouyer Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.
 1.47.2.3  07-Feb-2000  he Apply patch (requested by thorpej):
Fix a small oversight in the Miata DMA fix pullups.
 1.47.2.2  06-Feb-2000  he Pull up revision 1.51 (requested by thorpej):
Fix host->device DMA data corruption problem on DEC Miata
workstations.
 1.47.2.1  10-Apr-1999  he file cia.c was added on branch netbsd-1-4 on 2000-02-06 17:29:37 +0000
 1.56.2.1  21-Jun-2001  nathanw Catch up to -current.
 1.57.16.1  30-May-2002  gehenna Catch up with -current.
 1.57.4.4  03-Jan-2003  thorpej Sync with HEAD.
 1.57.4.3  18-Oct-2002  nathanw Catch up to -current.
 1.57.4.2  20-Jun-2002  nathanw Catch up to -current.
 1.57.4.1  26-Apr-2001  nathanw file cia.c was added on branch nathanw_sa on 2002-06-20 03:37:40 +0000
 1.57.2.2  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.57.2.1  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.62.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.62.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.62.2.1  03-Sep-2004  skrll Sync with HEAD
 1.64.78.2  04-May-2009  yamt sync with head.
 1.64.78.1  16-May-2008  yamt sync with head.
 1.64.76.1  18-May-2008  yamt sync with head.
 1.64.74.2  17-Jan-2009  mjf Sync with HEAD.
 1.64.74.1  02-Jun-2008  mjf Sync with HEAD.
 1.64.26.2  25-Mar-2007  yamt revert rev.1.64.26.1, which was committed mistakenly. pointed by Pavel Cahyna.
 1.64.26.1  24-Mar-2007  yamt initialize ci->ci_schedstate.spc_mutex of APs.
(sched_rqinit is called before APs are attached.)
 1.65.8.2  28-Apr-2009  skrll Sync with HEAD.
 1.65.8.1  19-Jan-2009  skrll Sync with HEAD.
 1.66.2.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.69.4.2  31-May-2011  rmind sync with head
 1.69.4.1  05-Mar-2011  rmind sync with head
 1.70.2.1  06-Jun-2011  jruoho Sync with HEAD.
 1.71.2.1  23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.72.6.1  18-Feb-2012  mrg merge to -current.
 1.72.2.1  17-Apr-2012  yamt sync with head
 1.73.24.1  27-Dec-2015  skrll Sync with HEAD (as of 26th Dec)
 1.73.6.1  03-Dec-2017  jdolecek update from HEAD
 1.74.32.1  23-Mar-2021  thorpej Convert config_found_ia() call sites where the device only carries
a single interface attribute to bare config_found() calls.
 1.75.2.1  01-Aug-2021  thorpej Sync with HEAD.
 1.78.2.1  03-Aug-2021  thorpej Adapt to CFARGS().

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