5910d436b2
This is an amalgam of a patch by Doug Ambrisko to generalize uart_acpi_find_device, imp moving the ACPI table to uart_dev_ns8250.c and advice by jhb to work around a bug in the EPYC 3151 BIOS (the BIOS incorrectly marks the serial ports as disabled) Reviewed by: imp MFC after: 8 weeks Differential Revision: https://reviews.freebsd.org/D16432
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright 2002 by Peter Grehan. 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.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* 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 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* PSIM local bus 16550
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/module.h>
|
|
#include <sys/tty.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/timepps.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <powerpc/psim/iobusvar.h>
|
|
|
|
#include <dev/uart/uart.h>
|
|
#include <dev/uart/uart_bus.h>
|
|
|
|
static int uart_iobus_probe(device_t dev);
|
|
|
|
static device_method_t uart_iobus_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, uart_iobus_probe),
|
|
DEVMETHOD(device_attach, uart_bus_attach),
|
|
DEVMETHOD(device_detach, uart_bus_detach),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t uart_iobus_driver = {
|
|
uart_driver_name,
|
|
uart_iobus_methods,
|
|
sizeof(struct uart_softc),
|
|
};
|
|
|
|
static int
|
|
uart_iobus_probe(device_t dev)
|
|
{
|
|
struct uart_softc *sc;
|
|
char *type;
|
|
|
|
type = iobus_get_name(dev);
|
|
if (strncmp(type, "com", 3) != 0)
|
|
return (ENXIO);
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->sc_class = &uart_ns8250_class;
|
|
|
|
device_set_desc(dev, "PSIM serial port");
|
|
return (uart_bus_probe(dev, 0, 0, 0, 0, 0, 0));
|
|
}
|
|
|
|
DRIVER_MODULE(uart, iobus, uart_iobus_driver, uart_devclass, 0, 0);
|