Commit Graph

328 Commits

Author SHA1 Message Date
Warner Losh
f6cea53f9d Create a generic PCCARD_PNP_INFO from the MODULE_PNP_INFO building
block. Use it in all the PNP drivers to export either the current PNP
table. For uart, create a custom table and export it using
MODULE_PNP_INFO since it's the only one that matches on function
number.

Differential Review: https://reviews.freebsd.org/D3461
2015-12-11 05:27:56 +00:00
Kevin Lo
d4438cd2b4 Remove a duplicate definition. 2015-12-05 15:09:19 +00:00
Adrian Chadd
e0fe7c958f uart(4) - make the 8250 uart baudrate tolerance build time tweakable.
It turns out on a 16550 w/ a 25MHz SoC reference clock you get a little
over 3% error at 115200 baud, which causes this to fail.

Just .. cope. Things cope these days.

Default to 30 (3.0%) as before, but allow UART_DEV_TOLERANCE_PCT to be
set at build time to change that.
2015-11-18 06:24:21 +00:00
Alexander Motin
0a5c75e53c Add ID for Intel Panther Point KT Controller
Found on ASUS P8Q77-M motherboard.

Submitted by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	2 weeks
2015-09-13 12:08:25 +00:00
Andrew Turner
d5ad1d0d6d Allow us to set the console device tree node. This is needed as not all
vendor supplied device trees contain the needed properties for us to select
the correct uart to use as the kernel console.

An example of this would be to add the following to loader.conf.
hw.fdt.console="/smb/uart@f7113000"

The intention of this is slightly different than the existing
hw.uart.console option. The new option will mean the boot serial
configuration will be derived from the device node, while the existing
option expects the user to configure all this themselves.

Further work is planned to allow the uart configuration to be set based on
the stdout-path property devicetree bindings.

Sponsored by:	ABT Systems Ltd
Differential Revision:	https://reviews.freebsd.org/D3559
2015-09-08 16:06:04 +00:00
Marcel Moolenaar
7bd6f3d060 Add support for the Broadcom TruManage integrated serial port.
PR:		191266
2015-08-12 15:48:14 +00:00
Marcel Moolenaar
9def69ec5f Use bus_alloc_resource_any(), rather than bus_alloc_resource()
with start 0 and end ~0. This avoids confusion WRT to what the
value of length can or should be.
2015-08-12 04:03:04 +00:00
Ian Lepore
dc4aaf6dd1 Style fix, no functional changes -- do the braces for switches correctly. 2015-08-11 02:30:54 +00:00
Ian Lepore
fac6a198c3 Correct the polarity of the PPS assert and clear events with respect to the
electrical signals on the serial port.  Virtually all devices which output a
PPS signal generate a brief higher-voltage pulse, the leading edge of which
is the on-time point.

Both DCD and CTS are active-low signals on the wire, meaning the assertion
of their status bits in the modem status register corresponds to the lower
voltage level on the wire.  So when the status bit transitions to not-set,
create a PPS assert event; when the status bit transitions to set, create a
PPS clear event.
2015-08-10 20:54:03 +00:00
Ian Lepore
196d3019a8 Allow the choice of PPS signal captured by uart(4) to be runtime-configured,
eliminating the need to build a custom kernel to use the CTS signal.

The historical UART_PPS_ON_CTS kernel option is still honored, but now it
can be overridden at runtime using a tunable to configure all uart devices
(hw.uart.pps_mode) or specific devices (dev.uart.#.pps_mode).  The per-
device config is both a tunable and a writable sysctl.

This syncs the PPS capabilities of uart(4) with the enhancements recently
recently added to ucom(4) for capturing from USB serial devices.

Relnotes:	yes
2015-08-10 20:08:09 +00:00
Ian Lepore
b59236cece Provide the tty-layer mutex when initializing the pps api. This allows
time_pps_fetch() to be used in blocking mode.

Also, don't init the pps api for system devices (consoles) that provide a
custom attach routine.  The device may actually be a keyboard or other non-
tty device.  If it wants to do pps processing (unlikely) it must handle
everything for itself.  (In reality, only a sun keyboard uses a custom
attach routine, and it doesn't make a good pps device.)
2015-08-08 20:11:47 +00:00
Marius Strobl
86fb540033 - Since r253161, uart_intr() abuses FILTER_SCHEDULE_THREAD for signaling
uart_bus_attach() during its test that 20 iterations weren't sufficient
  for clearing all pending interrupts, assuming this means that hardware
  is broken and doesn't deassert interrupts. However, under pressure, 20
  iterations also can be insufficient for clearing all pending interrupts,
  leading to a panic as intr_event_handle() tries to schedule an interrupt
  handler not registered. Solve this by introducing a flag that is set in
  test mode and otherwise restores pre-r253161 behavior of uart_intr(). The
  approach of additionally registering uart_intr() as handler as suggested
  in PR 194979 is not taken as that in turn would abuse special pccard and
  pccbb handling code of intr_event_handle(). [1]
- Const'ify uart_driver_name.
- Fix some minor style bugs.

PR:		194979 [1]
Reviewed by:	marcel (earlier version)
MFC after:	3 days
2015-07-24 17:01:16 +00:00
Neel Natu
62145ff347 If uart interrupts are not functioning then schedule the callout to do the
polling at device attach time [1].

Add tunables 'debug.uart_force_poll' and 'debug.uart_poll_freq' to control
uart polling.

Submitted by:	Aleksey Kuleshov (rndfax@yandex.ru) [1]
2015-07-16 04:15:22 +00:00
Sean Bruno
4abd25091d Add new UART device presented on newer AMT enabled systems/laptops.
Tested on Dell Latitude E7240.

MFC after:	2 weeks
Relnotes:	yes
2015-06-22 17:16:09 +00:00
Marcel Moolenaar
9308005ed9 Add support for the Intel Atom E3800 series SoC (aka Bay Trail).
Sponsored by:	XipLink, Inc
2015-06-20 04:02:33 +00:00
Luiz Otavio O Souza
b1621f22b3 Actually check the DTS node value to enable the uart quirks.
Without this fix, you cannot disable the quirks by setting it to 0, just
the presence of the FDT node was enough to enable it.
2015-05-30 16:30:51 +00:00
Oleksandr Tymoshenko
5b03aba6c8 Switch TI platform support code from using FreeBSD's custom-baked DTS
files to vendor-provided ones. It should make easier to adopt platform
code to new revisions of hardware and to use DTS overlays for various
Beaglebone extensions (shields/capes).

Original dts filenames were not changed, they're now wrappers over dts
files provided by TI. So make sure you update .dtb files on your
devices as part of kernel update

GPIO addressing was changed: instead of one global /dev/gpioc0 there
are per-bank instances of /dev/gpiocX. Each bank has 32 pins so for
instance pin 121 on /dev/gpioc0 in old addressing scheme is now pin 25
on /dev/gpioc3

On Pandaboard serial console devices was changed from /dev/ttyu0 to
/dev/ttyu2 so you'll have to update /etc/ttys to get login prompt
on serial port in multiuser mode. Single user mode serial console
should work as-is

Differential Revision:	https://reviews.freebsd.org/D2146
Reviewed by:	rpaulo, ian, Michal Meloun, Svatopluk Kraus
2015-05-22 03:16:18 +00:00
Andrew Turner
405ada37fb Add support for the uart classes to set their default register shift value.
This is needed with the pl011 driver. Before this change it would default
to a shift of 0, however the hardware places the registers at 4-byte
addresses meaning the value should be 2.

This patch fixes this for the pl011 when configured using the fdt. The
other drivers have a default value of 0 to keep this a no-op.

MFC after:	1 week
2015-04-11 17:16:23 +00:00
Andrew Turner
be3b046ce8 Get the fdt uart driver working on arm64, there is no machine/fdt.h, and
the default shift should be 2 for the SoCs we support.

Sponsored by:	The FreeBSD Foundation
2015-04-07 15:12:03 +00:00
Andrew Turner
7966cc995c Fix uart_fdt_get_clock. It should have beed using the cell variable passed
in, not value on the stack.
2015-04-07 12:42:06 +00:00
Andrew Turner
a8b295acf3 Move uart_fdt_get_clock and uart_fdt_get_shift to uart_bus_fdt.c, we may
not build uart_cpu_fdt.c in all configs.
2015-04-04 18:45:25 +00:00
Andrew Turner
06d8b1ed6e Remove the extra copy of uart_fdt_get_clock and uart_fdt_get_shift. While
here also use OF_getencprop in uart_fdt_get_clock.

Sponsored by:	The FreeBSD Foundation
2015-04-04 09:57:52 +00:00
Andrew Turner
3d2a63f5ac Use OF_getencprop over OF_getprop and fdt32_to_cpu. The latter may give
us the wrong data in the failure case if shift was not zero.

Sponsored by:	The FreeBSD Foundation
2015-04-04 09:21:56 +00:00
Eitan Adler
918057d9a9 And it turns out someone beat me to it....
PR:		199013
2015-03-30 08:54:59 +00:00
Eitan Adler
d930009250 Add support for "MosChip MCS9922 PCIe to Peripheral Controller" to uart
Submitted by:	<mlsemon35@gmail.com>
PR:		199013
MFC After:	1 month
2015-03-30 08:48:35 +00:00
Ian Lepore
3bb693af87 Move the uart_class definitions and fdt compat data into the individual
uart implementations, and export them using the new linker-set mechanism.

Differential Revision:	https://reviews.freebsd.org/D1993
Submitted by:	Michal Meloun
2015-03-07 15:24:15 +00:00
Ian Lepore
bd69e3ad2f Define new linker set, UART_FDT_CLASS_AND_DEVICE, for registering full
(class and device) FDT UART. Define second one, UART_FDT_CLASS, for UART
class only.

This paves the way for declaring uart_class data and ofw/fdt compat data
with a uart implementation, rather than needing a big global table of
compat data and weak-symbol declarations of every existing implementation.

Differential Revision:	https://reviews.freebsd.org/D1992
Submitted by:	Michal Meloun
2015-03-07 15:18:57 +00:00
Andrew Turner
83724a87a4 Fix the pl011 driver to work when the uart will write in zero cycles. This
is the case, depending on the options, in some of the ARM hardware
simulators. In these cases we don't get an interrupt so will need to
schedule the task to write more data to the uart.

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2015-03-03 09:48:19 +00:00
Ruslan Bukin
83dbea149e Enable 'receive timeout' interrupt allowing us to not
loose 'rx buffer full' event.

This fixes operation on ARMv8 Foundation Model.

Sponsored by:	DARPA, AFRL
2015-02-24 15:35:26 +00:00
John Baldwin
a1d18b6615 Add the device ID for the AMT serial port on my Thinkpad T400.
MFC after:	1 week
2015-02-05 21:50:51 +00:00
Ruslan Bukin
eff43c7467 Rename Exynos UART driver. No functional change.
Submitted by:	Michal Meloun <meloun@miracle.cz>
2015-01-13 15:04:28 +00:00
Peter Grehan
7e47312c46 Add PCI ID for the Oxford Semiconductor OXPCIe952 device.
Seen on the StarTech "1 Port Native ExpressCard RS232 Serial AdapterCard
 with 16950 UART"

Reported and tested by:	Michael Dexter
MFC after:	1 week
2015-01-12 03:39:56 +00:00
Marius Strobl
393677427c Don't use a sub-device/-vendor wildcard for probing MCS9922 as other
chips with the same device and vendor IDs actually may provide different
functionality. While at it, canonicalize the description to match other
MosChip UARTs.

PR:		186891
MFC after:	3 days
2014-12-28 21:36:20 +00:00
Alexander Motin
e67f3bec39 Add bunch of PCI IDs of Intel Wildcat Point (9 Series) chipsets.
MFC after:	1 week
2014-11-26 04:23:21 +00:00
Zbigniew Bodek
bf39c5e8d5 Make uart_bus_fdt a decendant of ofwbus
This will allow to attach UART drivers lying directly on the root node
instead of simple-bus compatible bus only.

Obtained from:   Semihalf
Sponsored by:    The FreeBSD Foundation
2014-11-12 21:41:15 +00:00
Zbigniew Bodek
17d2ee0132 Make PL011 UART to wait on putc only when TX FIFO is full
Instead of waiting for empty TX FIFO it is more reasonable to
block on full FIFO. As soon as FIFO slot is free the character
can be transmitted.
In case of TX FIFO disabled, TXFF bit indicates that transmit
register is not empty.

Obtained from:   Semihalf
Reviewed by:     andrew, emaste
Sponsored by:    The FreeBSD Foundation
2014-11-12 21:38:31 +00:00
Marcelo Araujo
3bde81092c Drop __DECONST as well as few fixes of style(9).
Phabric:	D1012
Suggested by:	mjg, jhb
Reviewed by:	mjg, jhb
Sponsored by:	QNAP Systems Inc.
2014-10-28 03:42:09 +00:00
Marcelo Araujo
f695e0468c Fix a leaked Storage Variable.
Phabric:	D981
Submitted by:	myself
Reported by:	Coverity
CID:		1248848
Reworked by:	kevlo
Reviewed by:	marcel, davide, ray, kevlo
Approved by:	marcel, kevlo
2014-10-24 05:39:32 +00:00
Davide Italiano
2be111bf7d Follow up to r225617. In order to maximize the re-usability of kernel code
in userland rename in-kernel getenv()/setenv() to kern_setenv()/kern_getenv().
This fixes a namespace collision with libc symbols.

Submitted by:   kmacy
Tested by:      make universe
2014-10-16 18:04:43 +00:00
Ian Lepore
0dc54d18b2 Use the FIFOs in the imx5/imx6 uart hardware instead of interrupting on
each byte sent or received.
2014-10-12 17:56:02 +00:00
Ganbold Tsagaankhuu
7f29c69aee Use documented compat string for msm uart.
Whilst here use tab instead of spaces.

Approved by:    stas (mentor)
2014-10-06 09:00:53 +00:00
Ganbold Tsagaankhuu
dc7717a863 Add uart driver for Qualcomm MSM 7000/8000 series chips.
It is working on IFC6410 board which has Qualcomm Snapdragon SoC.

Approved by:    stas (mentor)
2014-10-02 08:12:42 +00:00
Ian Lepore
c3f0f2847f Return the actual baud rate programmed in the hardware rather than 115200.
This allows the "3wire" entry in /etc/ttys (with no speed specified) to work.
2014-09-30 23:01:11 +00:00
Marcel Moolenaar
359ee827e1 Do not fail the low-level device probe simply because the kernel
doesn't have support for the Z8530. Embedded PowerPC platforms
typically don't. Fail when the device class we actually need is
not present.

Obtained from:	Juniper Networks, Inc.
2014-07-26 17:49:40 +00:00
Marcel Moolenaar
e7d939bda2 Remove ia64.
This includes:
o   All directories named *ia64*
o   All files named *ia64*
o   All ia64-specific code guarded by __ia64__
o   All ia64-specific makefile logic
o   Mention of ia64 in comments and documentation

This excludes:
o   Everything under contrib/
o   Everything under crypto/
o   sys/xen/interface
o   sys/sys/elf_common.h

Discussed at: BSDcan
2014-07-07 00:27:09 +00:00
Hans Petter Selasky
af3b2549c4 Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
Glen Barber
37a107a407 Revert r267961, r267973:
These changes prevent sysctl(8) from returning proper output,
such as:

 1) no output from sysctl(8)
 2) erroneously returning ENOMEM with tools like truss(1)
    or uname(1)
 truss: can not get etype: Cannot allocate memory
2014-06-27 22:05:21 +00:00
Hans Petter Selasky
3da1cf1e88 Extend the meaning of the CTLFLAG_TUN flag to automatically check if
there is an environment variable which shall initialize the SYSCTL
during early boot. This works for all SYSCTL types both statically and
dynamically created ones, except for the SYSCTL NODE type and SYSCTLs
which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to
be used in the case a tunable sysctl has a custom initialisation
function allowing the sysctl to still be marked as a tunable. The
kernel SYSCTL API is mostly the same, with a few exceptions for some
special operations like iterating childrens of a static/extern SYSCTL
node. This operation should probably be made into a factored out
common macro, hence some device drivers use this. The reason for
changing the SYSCTL API was the need for a SYSCTL parent OID pointer
and not only the SYSCTL parent OID list pointer in order to quickly
generate the sysctl path. The motivation behind this patch is to avoid
parameter loading cludges inside the OFED driver subsystem. Instead of
adding special code to the OFED driver subsystem to post-load tunables
into dynamically created sysctls, we generalize this in the kernel.

Other changes:
- Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask"
to "hw.pcic.intr_mask".
- Removed redundant TUNABLE statements throughout the kernel.
- Some minor code rewrites in connection to removing not needed
TUNABLE statements.
- Added a missing SYSCTL_DECL().
- Wrapped two very long lines.
- Avoid malloc()/free() inside sysctl string handling, in case it is
called to initialize a sysctl from a tunable, hence malloc()/free() is
not ready when sysctls from the sysctl dataset are registered.
- Bumped FreeBSD version to indicate SYSCTL API change.

MFC after:	2 weeks
Sponsored by:	Mellanox Technologies
2014-06-27 16:33:43 +00:00
John-Mark Gurney
aae6c4d071 add support for MosChip MCS9922... This is found on an ExpressCard..
tested to work w/ cu talking to itself (the two ports connected via
null modem cable)...
2014-06-22 06:54:36 +00:00
Olivier Houchard
8bc9a079ef In uart_bus_grab(), use the ier_mask instead of a custom hack for XScale.
Suggested by:	jmg
2014-05-29 21:00:06 +00:00