machine/stdarg.h -> sys/stdarg.h

Switch to using sys/stdarg.h for va_list type and va_* builtins.

Make an attempt to insert the include in a sensible place. Where
style(9) was followed this is eas

machine/stdarg.h -> sys/stdarg.h

Switch to using sys/stdarg.h for va_list type and va_* builtins.

Make an attempt to insert the include in a sensible place. Where
style(9) was followed this is easy, where it was ignored, aim for the
first block of sys/*.h headers and don't get too fussy or try to fix
other style bugs.

Reviewed by: imp
Exp-run by: antoine (PR 286274)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1595

show more ...

uart: Go back to returning '0' when we've probed the device.

Two reasons for this: we know it's a uart after we call probe and it
returns successfully. Second, uart passes data between probe and att

uart: Go back to returning '0' when we've probed the device.

Two reasons for this: we know it's a uart after we call probe and it
returns successfully. Second, uart passes data between probe and attach
with softc. As it is now, we call probe twice, once in the bidding
process and once after bidding id done. However, the probe process for
uart isn't completely idempotent (we change state of the uart
sometimes). The second call can result in odd behavior (though so far
only in buggy version of other code I've not committed). The bigger
problem is the softc: newbus creates it, we populate it, then frees it
when we don't return 0 to claim the device. It then calls us again, we
repopulate it, and this time it doesn't free it before calling attach.
Returning 0 avoids both of these issues. The justification for doing it
in the commit that changed it was 'while I'm here', so there doesn't
seem to be a use case for it.

Sponsored by: Netflix
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D47095

show more ...

uart: export rclk via sysctl

To help debugging, export the rclk a uart is using as
dev.uart.X.rclk. It can be opaque when it is wrong since any error
messages printed to the system console using the

uart: export rclk via sysctl

To help debugging, export the rclk a uart is using as
dev.uart.X.rclk. It can be opaque when it is wrong since any error
messages printed to the system console using the wrong rclk aren't
informative.

Sponsored by: Netflix
Reviewed by: andrew, markj
Differential Revision: https://reviews.freebsd.org/D47070

show more ...

uart: Prefer rclk passed in over rclk in the class

If rclk is set in sysdev, then it was set during the boot process and is
intended to override the defaults. By prefering the sysdev one over the
cl

uart: Prefer rclk passed in over rclk in the class

If rclk is set in sysdev, then it was set during the boot process and is
intended to override the defaults. By prefering the sysdev one over the
class, xo=XXXX in hw.uart.console can give the user a usable console for
non-traditional UARTs, especially on !x86 platforms. The default rclk
generally only is good for I/O mapped UARTS or PCI ones that we can do a
table lookup on. Other times, it can be hard to know what a good default
is without more information.

Sponsored by: Netflix
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D47069

show more ...

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

show more ...

sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

show more ...

Remove unused uart_devclass.

uart: plug a set-but-not-used var

Sponsored by: Rubicon Communications, LLC ("Netgate")

uart: Remove CTLFLAG_NEEDGIANT from sysctl.

MFC after: 2 weeks

Export a sysctl count of RX FIFO overrun events.

uart(4) backends currently detect RX FIFO overrun errors and report
them to the uart(4) core layer. They are then reported to the generic
TTY layer

Export a sysctl count of RX FIFO overrun events.

uart(4) backends currently detect RX FIFO overrun errors and report
them to the uart(4) core layer. They are then reported to the generic
TTY layer which promptly ignores them. As a result, there is
currently no good way to determine if a uart is experiencing RX FIFO
overruns. One could add a generic per-tty counter, but there did not
appear to be a good way to export those. Instead, add a sysctl under
the uart(4) sysctl tree to export the count of overruns.

Reviewed by: brooks
MFC after: 2 weeks
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24368

show more ...

Merge ^/head r358269 through r358399.

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly mark

Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)

r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are
still not MPSAFE (or already are but aren’t properly marked).
Use it in preparation for a general review of all nodes.

This is non-functional change that adds annotations to SYSCTL_NODE and
SYSCTL_PROC nodes using one of the soon-to-be-required flags.

Mark all obvious cases as MPSAFE. All entries that haven't been marked
as MPSAFE before are by default marked as NEEDGIANT

Approved by: kib (mentor, blanket)
Commented by: kib, gallatin, melifaro
Differential Revision: https://reviews.freebsd.org/D23718

show more ...

Use callout_func_t instead of the deprecated timeout_t.

Reviewed by: kib, imp
Differential Revision: https://reviews.freebsd.org/D22752

Merge ^/head r338026 through r338297, and resolve conflicts.

machine/stdarg.h -> sys/stdarg.h

Switch to using sys/stdarg.h for va_list type and va_* builtins.

Make an attempt to insert the include in a sensible place. Where
style(9) was followed this is eas

machine/stdarg.h -> sys/stdarg.h

Switch to using sys/stdarg.h for va_list type and va_* builtins.

Make an attempt to insert the include in a sensible place. Where
style(9) was followed this is easy, where it was ignored, aim for the
first block of sys/*.h headers and don't get too fussy or try to fix
other style bugs.

Reviewed by: imp
Exp-run by: antoine (PR 286274)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1595

show more ...

uart: Go back to returning '0' when we've probed the device.

Two reasons for this: we know it's a uart after we call probe and it
returns successfully. Second, uart passes data between probe and att

uart: Go back to returning '0' when we've probed the device.

Two reasons for this: we know it's a uart after we call probe and it
returns successfully. Second, uart passes data between probe and attach
with softc. As it is now, we call probe twice, once in the bidding
process and once after bidding id done. However, the probe process for
uart isn't completely idempotent (we change state of the uart
sometimes). The second call can result in odd behavior (though so far
only in buggy version of other code I've not committed). The bigger
problem is the softc: newbus creates it, we populate it, then frees it
when we don't return 0 to claim the device. It then calls us again, we
repopulate it, and this time it doesn't free it before calling attach.
Returning 0 avoids both of these issues. The justification for doing it
in the commit that changed it was 'while I'm here', so there doesn't
seem to be a use case for it.

Sponsored by: Netflix
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D47095

show more ...

uart: export rclk via sysctl

To help debugging, export the rclk a uart is using as
dev.uart.X.rclk. It can be opaque when it is wrong since any error
messages printed to the system console using the

uart: export rclk via sysctl

To help debugging, export the rclk a uart is using as
dev.uart.X.rclk. It can be opaque when it is wrong since any error
messages printed to the system console using the wrong rclk aren't
informative.

Sponsored by: Netflix
Reviewed by: andrew, markj
Differential Revision: https://reviews.freebsd.org/D47070

show more ...

uart: Prefer rclk passed in over rclk in the class

If rclk is set in sysdev, then it was set during the boot process and is
intended to override the defaults. By prefering the sysdev one over the
cl

uart: Prefer rclk passed in over rclk in the class

If rclk is set in sysdev, then it was set during the boot process and is
intended to override the defaults. By prefering the sysdev one over the
class, xo=XXXX in hw.uart.console can give the user a usable console for
non-traditional UARTs, especially on !x86 platforms. The default rclk
generally only is good for I/O mapped UARTS or PCI ones that we can do a
table lookup on. Other times, it can be hard to know what a good default
is without more information.

Sponsored by: Netflix
Reviewed by: andrew
Differential Revision: https://reviews.freebsd.org/D47069

show more ...

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

show more ...

sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

show more ...

Remove unused uart_devclass.

uart: plug a set-but-not-used var

Sponsored by: Rubicon Communications, LLC ("Netgate")

uart: Remove CTLFLAG_NEEDGIANT from sysctl.

MFC after: 2 weeks