102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*-
|
|
* Copyright (c) 2003 M. Warner Losh, Marcel Moolenaar
|
|
* 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 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 <machine/bus.h>
|
|
|
|
#include <dev/uart/uart.h>
|
|
#include <dev/uart/uart_cpu.h>
|
|
|
|
bus_space_tag_t uart_bus_space_io = I386_BUS_SPACE_IO;
|
|
bus_space_tag_t uart_bus_space_mem = I386_BUS_SPACE_MEM;
|
|
|
|
int
|
|
uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
|
|
{
|
|
|
|
return (0); /* XXX */
|
|
}
|
|
|
|
int
|
|
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
|
|
{
|
|
unsigned int i, ivar, flags;
|
|
|
|
/* Check the environment. */
|
|
di->ops = uart_ns8250_ops;
|
|
if (uart_getenv(devtype, di) == 0)
|
|
return (0);
|
|
|
|
/*
|
|
* There is a serial port on all pc98 hardware. It is 8251 or
|
|
* an enhance version of that. Some pc98 have the second serial
|
|
* port which is 16550A compatible. However, for the sio driver,
|
|
* flags selected which type of uart was in the sytem. We use
|
|
* something similar to sort things out.
|
|
*/
|
|
for (i = 0; i < 1; i++) {
|
|
if (resource_int_value("uart", i, "flags", &flags))
|
|
continue;
|
|
if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(flags))
|
|
continue;
|
|
if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(flags))
|
|
continue;
|
|
/*
|
|
* We have a possible device. Make sure it's enabled and
|
|
* that we have an I/O port.
|
|
*/
|
|
if (resource_int_value("uart", i, "disabled", &ivar) == 0 &&
|
|
ivar != 0)
|
|
continue;
|
|
if (resource_int_value("uart", i, "port", &ivar) != 0 ||
|
|
ivar == 0)
|
|
continue;
|
|
|
|
di->ops = uart_ns8250_ops;
|
|
di->bas.chan = 0;
|
|
di->bas.bst = uart_bus_space_io;
|
|
if (bus_space_map(di->bas.bst, ivar, 8, 0, &di->bas.bsh) != 0)
|
|
continue;
|
|
di->bas.regshft = 0;
|
|
di->bas.rclk = 0;
|
|
if (resource_int_value("uart", i, "baud", &ivar) != 0)
|
|
ivar = 0;
|
|
di->baudrate = ivar;
|
|
di->databits = 8;
|
|
di->stopbits = 1;
|
|
di->parity = UART_PARITY_NONE;
|
|
return (0);
|
|
}
|
|
|
|
return (ENXIO);
|
|
}
|