Add deprecation notices for various device drivers removed in 12.0.

This is a direct commit to stable/11 since these files have already
been removed in head.

Reviewed by: sbruno, gjb
Differential Revision: https://reviews.freebsd.org/D11542

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Yet more redundant parenthesis from r298431.

Mea culpa.

sys/dev: use our nitems() macro when it is avaliable through param.h.

No functional change, only trivial cases are done in this sweep,
Drivers that can get further enhancements will be done independently.

Discussed in: freebsd-current

Migrate many bus_alloc_resource() calls to bus_alloc_resource_anywhere().

Most calls to bus_alloc_resource() use "anywhere" as the range, with a given
count. Migrate these to use the new bus_alloc_resource_anywhere() API.

Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D5370

Don't pass RF_ALLOCATED to bus_alloc_resource().

Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays

Reviewed by: cognet
Approved by: cognet

Remove unused files from the digi(4) driver.

The digi(4) driver directory contains some files that cannot be checked
out on Windows filesystems. This isn't a big deal, but the files aren't
used anyway.

There are still some other places where checkouts on Windows don't work,
such as VFS_MOUNT.9/vfs_mount.9. This should already be a small
improvement.

MFC after: 1 month

Fix our ioctl(2) implementation when the argument is "int". New
ioctls passing integer arguments should use the _IOWINT() macro.
This fixes a lot of ioctl's not working on sparc64, most notable
being keyboard/syscons ioctls.

Full ABI compatibility is provided, with the bonus of fixing the
handling of old ioctls on sparc64.

Reviewed by: bde (with contributions)
Tested by: emax, marius
MFC after: 1 week

- Push Giant down into linker_reference_module().
- Add a new function linker_release_module() as a more intuitive complement
to linker_reference_module() that wraps linker_file_unload().
linker_release_module() can either take the module name and version info
passed to linker_reference_module() or it can accept the linker file
object returned by linker_reference_module().

Only reference the firmware module once rather than twice. The extra call
was accidentally added in 1.55 and resulted in an extra reference count
being held on the linker file.

MFC after: 1 week

Eliminate two unused arguments to ttycreate().

Increase boot-time DigiBIOS initialization timeout to allow
for a larger number of chained port modules.

PR: kern/55018
Submitted by: Cyrill Shevchuk <cyrill at cyrills.net>

Staticize some symbols that are each only used in one corresponding .c file.

PR: kern/43610
Submitted by: Matt Emmerton, matt at gsicomp dot on dot ca

Use BUS_PROBE_DEFAULT for pci probe return value

o avoid potential null ptr deref if symbol lookup fails
o unload module if symbol lookup fails

Noticed by: Coverity Prevent analysis tool (null ptr deref)
Reviewed by: bms, imp, dwhite

Add new function ttyinitmode() which sets our systemwide default
modes on a tty structure.

Both the ".init" and the current settings are initialized allowing
the function to be used both at attach and open time.

The function takes an argument to decide if echoing should be enabled.
Echoing should not be enabled for regular physical serial ports
unless they are consoles, in which case they should be configured
by ttyconsolemode() instead.

Use the new function throughout.

Remove unused ttys field.

Spotted by: Peter Jeremy <PeterJeremy@optushome.com.au>

Use generic tty code instead of local copies.

Remove buggy (root filesystems may not have cdev) and pointless
customization of an error message.

Preparation commit for the tty cleanups that will follow in the near
future:

rename ttyopen() -> tty_open() and ttyclose() -> tty_close().

We need the ttyopen() and ttyclose() for the new generic cdevsw
functions for tty devices in order to have consistent naming.

Give kldunload a -f(orce) argument.

Add a MOD_QUIESCE event for modules. This should return error (EBUSY)
of the module is in use.

MOD_UNLOAD should now only fail if it is impossible (as opposed to
inconvenient) to unload the module. Valid reasons are memory references
into the module which cannot be tracked down and eliminated.

When kldunloading, we abandon if MOD_UNLOAD fails, and if -force is
not given, MOD_QUIESCE failing will also prevent the unload.

For backwards compatibility, we treat EOPNOTSUPP from MOD_QUIESCE as
success.

Document that modules should return EOPNOTSUPP for unknown events.

Introduce ttygone() which indicates that the hardware is detached.

Move dtrwait logic to the generic TTY level.

Define the tty methods as typedefs.

Change the return type for t_break to void.

Add t_ioctl (more about this later).

Use generic support for BREAK and modem control ioctls.

Remove the TIOCDCDTIMESTAMP option.

The RFC-2783 PPS-API (<sys/timepps.h>) provides better and more
configurable service.

Put the pre FreeBSD-2.x tty compat code under BURN_BRIDGES.

Second half of the dev_t cleanup.

The big lines are:
NODEV -> NULL
NOUDEV -> NODEV
udev_t -> dev_t
udev2dev() -> findcdev()

Various minor adjustments including handling of userland access to kernel
space struct cdev etc.

Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.

Deorbit COMPAT_SUNOS.

We inherited this from the sparc32 port of BSD4.4-Lite1. We have neither
a sparc32 port nor a SunOS4.x compatibility desire these days.

Centralize the line discipline optimization determination in a function
called ttyldoptim().

Use this function from all the relevant drivers.

I belive no drivers finger linesw[] directly anymore, paving the way for
locking and refcounting.

Manual edits to change linesw[]-frobbing to ttyld_*() calls.

Machine generated patch which changes linedisc calls from accessing
linesw[] directly to using the ttyld...() functions

The ttyld...() functions ar inline so there is no performance hit.

Make the remaining serial drivers call ttyioctl() rather than calling
the linedisc directly.

There is no need to explicitly call the stop function. In all likelyhood
->l_close() did it and ttyclose certainly will.

Add missing <sys/module.h> includes

Convert callers to the new bus_alloc_resource_any(9) API.

Submitted by: Mark Santcroos <marks@ripe.net>
Reviewed by: imp, dfr, bde

Device megapatch 4/6:

Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.

Device megapatch 3/6:

Add missing D_TTY flags to various drivers.

Complete asserts that dev_t's passed to ttyread(), ttywrite(),
ttypoll() and ttykqwrite() have (d_flags & D_TTY) and a struct tty
pointer.

Make ttyread(), ttywrite(), ttypoll() and ttykqwrite() the default
cdevsw methods for D_TTY drivers and remove the explicit initializations
in various drivers cdevsw structures.

Device megapatch 1/6:

Free approx 86 major numbers with a mostly automatically generated patch.

A number of strategic drivers have been left behind by caution, and a few
because they still (ab)use their major number.

Eliminate bogus use of makedev(): rather than synthesize the dev_t, use
our already cached copy.

Use __FBSDID().
Also some minor style cleanups.

Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.

Consistently use the BSD u_int and u_short instead of the SYSV uint and
ushort. In most of these files, there was a mixture of both styles and
this change just makes them self-consistent.

Requested by: bde (kern_ktrace.c)

Don't use pessimal (u_short) types for i/o ports. This is mainly for
completenss. The pessimization is tiny compared with i/o port slowness
except on very old machines, but code that used signed short types for
i/o ports was unpessimized long ago, and the macro that detected it
recently started working for u_short types too. Use of bus space
should have made this moot long ago.

Not tested at runtime by: bde

Make nokqfilter() return the correct return value.

Ditch the D_KQFILTER flag which was used to prevent calling NULL pointers.

Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by: re(scottl)

Use canonical format for cdevsw initialization.

Back out M_* changes, per decision of the TRB.

Approved by: trb

Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.

Be consistent about "static" functions: if the function is marked
static in its prototype, mark it static at the definition too.

Inspired by: FlexeLint warning #512

Replace (ab)uses of "NULL" where "0" is really meant.

Make delay iteration counts a function of hz as the delay period in each
loop is inversly proportional to hz.

This makes things more sane for configurations with hz != 100.

Cosmetic: Make the loops look similar to the loops in digi.c

Make delay iteration counts a function of hz as the delay period in each
loop is inversly proportional to hz.

This makes things more sane for configurations with hz > 100.

Submitted by: Peter Jeremy <peter.jeremy@alcatel.com.au>

Yet another adjustment of digi_delay(). The delay is now consistent
irrespective of whether tsleep() or DELAY() is used.

Change more uses of tsleep() to digi_delay() and make the loop counts more
sane.

Add a digi_delay() function and use it instead of tsleep() when polling
the card for command completion.

digi_delay() uses either tsleep() or DELAY() depending on the value of
``cold''.

Pointed in the right direction by: jhb

Use the PCI port for pci cards, not just for PCIXR cards.

Add the card name to the error message for the first initialisation
failure, giving us more info about what was actually discovered.

This code has been tested by Robert Suetterlin <robert@mpe.mpg.de>
to work on a PCI Xem card.

Change linker_reference_module() so that it's passed a struct
mod_depend * (which may be NULL). The only consumer of this
function at the moment is digi_loadmoduledata(), and that passes
a NULL mod_depend *.

In linker_reference_module(), check to see if we've already got
the required module loaded. If we have, bump the reference count
and return that, otherwise continue the module search as normal.

Add some missing MODULE_VERSIONs

Without these, the kern_linker interface doesn't record these pseudo-drivers,
making them unavailable via modlist_lookup2*().

Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API. The entire API now consists of two functions
similar to the pre-KSE API. The suser() function takes a thread pointer
as its only argument. The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0. The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on: smp@

Use suser() instead of checking cr_uid against 0 directly.

Fix warnings. The driver would be more useful with a DRIVER_MODULE()
entry so that it actually can do something.

#include "opt_compat.h" so that the support for old ioctls can actually
be compiled. Old tty ioctls are still used (possibly ifdef'ed) in at
least the following programs in the src tree:
atc des ee fontedit gdb gdbserver lock ntp perl5 tcsh telnet top vttest

rp.c:
Unremoved used variables so that the support for old ioctls actually
compiles.

Not tested at runtime by: bde

Staticise the con_bios and digi_devclass variables, since they aren't needed
by anything else.

- Fix a bunch of malloc calls where the M_FLAG is incorrectly used; it
should be M_WAITOK.

Spotted by: des

devsw_add() and cdevsw_remove() are no longer needed.

Send a .4 second BREAK rather than a .25 second break so that
we're at least consistent with what tcsendbreak(3) is documented
to do.

MFC after: 2 weeks

Note, the MFC will be to sys/dev/dgb/dgm.c on the RELENG_4 branch

KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after: ha ha ha ha

Allow individual ports to use alternate pin settings (swap dsr & cd)
via the new DIGIIO_SETALTPIN ioctl, and allow the port's ALTPIN setting
to be queried via DIGIIO_GETALTPIN.

The initial state and lock devices are normally used to set and/or
lock ALTPIN settings although the device itself may also be used.

ALTPIN settings are applied per-device and apply to both the callin
and callout device at the same time.

Use linker_reference_module() instead of hard-coding the digi_*
module path.

Credit John Prince and Eric Hernes for their work.

MALLOC -> malloc, FREE -> free

#include <digi/*.h> -> #include <dev/digi/*.h>

Suggested by: bde

Fairwell digiio.h (moved to src/sys/sys)

digiio.h has moved to /usr/include/sys

digiModel_t -> enum digi_model
Remove a forgotton and unused structure.

Remove all the mutex stuff - suggested by jhb

Tidy up includes, credit Slawa Olhovchenkov, John Prince and Eric Hernes
for their efforts and add a couple of missing parenthesis around return
expressions.

sys/mutex.h requires sys/lock.h for LINT

Re-spotted by: phk

Change COM_LOCK/COM_UNLOCK to a regular mutex - still conditional on
SMP being defined.

Make LINT compile again.

Spotted by: phk

Only define DEBUG if it's undefined. This should eventually go, but
can stay for now in case of problems.

Add a ``digi'' driver.

This driver supports PCI Xr-based and ISA Xem Digiboard cards.
dgm will go away soon if there are no problems reported. For now,
configuring dgm into your kernel warns that you should be using
digi. This driver is probably close to supporting Xi, Xe and Xeve
cards, but I wouldn't expect them to work properly (hardware
donations welcome).

The digi_* pseudo-drivers are not drivers themselves but contain
the BIOS and FEP/OS binaries for various digiboard cards and are
auto-loaded and auto-unloaded by the digi driver at initialisation
time. They *may* be configured into the kernel, but waste a lot
of space if they are. They're intended to be left as modules.

The digictl program is (mainly) used to re-initialise cards that
have external port modules attached such as the PC/Xem.