freebsd-dev/sys/dev/uart/uart_bus_ebus.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

109 lines
3.6 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <dev/ofw/ofw_bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <machine/ver.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_bus.h>
#include <dev/uart/uart_cpu.h>
static int uart_ebus_probe(device_t dev);
static device_method_t uart_ebus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uart_ebus_probe),
DEVMETHOD(device_attach, uart_bus_attach),
DEVMETHOD(device_detach, uart_bus_detach),
{ 0, 0 }
};
static driver_t uart_ebus_driver = {
uart_driver_name,
uart_ebus_methods,
sizeof(struct uart_softc),
};
static int
uart_ebus_probe(device_t dev)
{
const char *nm, *cmpt;
struct uart_softc *sc;
struct uart_devinfo dummy;
sc = device_get_softc(dev);
sc->sc_class = NULL;
nm = ofw_bus_get_name(dev);
cmpt = ofw_bus_get_compat(dev);
if (cmpt == NULL)
cmpt = "";
if (!strcmp(nm, "lom-console") || !strcmp(nm, "su") ||
!strcmp(nm, "su_pnp") || !strcmp(cmpt, "rsc-console") ||
!strcmp(cmpt, "rsc-control") || !strcmp(cmpt, "su") ||
!strcmp(cmpt, "su16550") || !strcmp(cmpt, "su16552")) {
/*
* On AXi and AXmp boards the NS16550 (used to connect
* keyboard/mouse) share their IRQ lines with the i8042.
* Any IRQ activity (typically during attach) of the
* NS16550 used to connect the keyboard when actually the
* PS/2 keyboard is selected in OFW causes interaction
* with the OBP i8042 driver resulting in a hang and vice
* versa. As RS232 keyboards and mice obviously aren't
* meant to be used in parallel with PS/2 ones on these
* boards don't attach to the NS16550 in case the RS232
* keyboard isn't selected in order to prevent such hangs.
*/
if ((!strcmp(sparc64_model, "SUNW,UltraAX-MP") ||
!strcmp(sparc64_model, "SUNW,UltraSPARC-IIi-Engine")) &&
uart_cpu_getdev(UART_DEV_KEYBOARD, &dummy)) {
device_disable(dev);
return (ENXIO);
}
sc->sc_class = &uart_ns8250_class;
return (uart_bus_probe(dev, 0, 0, 0, 0, 0));
}
return (ENXIO);
}
DRIVER_MODULE(uart, ebus, uart_ebus_driver, uart_devclass, 0, 0);