1/*-
2 * Copyright (c) 2003 M. Warner Losh, Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/dev/uart/uart_cpu_pc98.c 168281 2007-04-02 22:00:22Z marcel $");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33
34#include <machine/bus.h>
35
36#include <dev/uart/uart.h>
37#include <dev/uart/uart_cpu.h>
38
39bus_space_tag_t uart_bus_space_io = I386_BUS_SPACE_IO;
40bus_space_tag_t uart_bus_space_mem = I386_BUS_SPACE_MEM;
41
42int
43uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
44{
45
46 return (0); /* XXX */
47}
48
49int
50uart_cpu_getdev(int devtype, struct uart_devinfo *di)
51{
52 struct uart_class *class;
53 unsigned int i, ivar, flags;
54
55 class = &uart_ns8250_class;
56 if (class == NULL)
57 return (ENXIO);
58
59 /* Check the environment. */
60 if (uart_getenv(devtype, di, class) == 0)
61 return (0);
62
63 /*
64 * There is a serial port on all pc98 hardware. It is 8251 or
65 * an enhance version of that. Some pc98 have the second serial
66 * port which is 16550A compatible. However, for the sio driver,
67 * flags selected which type of uart was in the sytem. We use
68 * something similar to sort things out.
69 */
70 for (i = 0; i < 1; i++) {
71 if (resource_int_value("uart", i, "flags", &flags))
72 continue;
73 if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(flags))
74 continue;
75 if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(flags))
76 continue;
77 /*
78 * We have a possible device. Make sure it's enabled and
79 * that we have an I/O port.
80 */
81 if (resource_int_value("uart", i, "disabled", &ivar) == 0 &&
82 ivar != 0)
83 continue;
84 if (resource_int_value("uart", i, "port", &ivar) != 0 ||
85 ivar == 0)
86 continue;
87
88 di->ops = uart_getops(class);
89 di->bas.chan = 0;
90 di->bas.bst = uart_bus_space_io;
91 if (bus_space_map(di->bas.bst, ivar, uart_getrange(class), 0,
92 &di->bas.bsh) != 0)
93 continue;
94 di->bas.regshft = 0;
95 di->bas.rclk = 0;
96 if (resource_int_value("uart", i, "baud", &ivar) != 0)
97 ivar = 0;
98 di->baudrate = ivar;
99 di->databits = 8;
100 di->stopbits = 1;
101 di->parity = UART_PARITY_NONE;
102 return (0);
103 }
104
105 return (ENXIO);
106}