2 * Copyright (c) 2003 M. Warner Losh, Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
34 #include <machine/bus.h>
36 #include <dev/uart/uart.h>
37 #include <dev/uart/uart_cpu.h>
39 bus_space_tag_t uart_bus_space_io = I386_BUS_SPACE_IO;
40 bus_space_tag_t uart_bus_space_mem = I386_BUS_SPACE_MEM;
43 uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
50 uart_cpu_getdev(int devtype, struct uart_devinfo *di)
52 unsigned int i, ivar, flags;
54 /* Check the environment. */
55 if (uart_getenv(devtype, di) == 0)
59 * There is a serial port on all pc98 hardware. It is 8251 or
60 * an enhance version of that. Some pc98 have the second serial
61 * port which is 16550A compatible. However, for the sio driver,
62 * flags selected which type of uart was in the sytem. We use
63 * something similar to sort things out.
65 for (i = 0; i < 1; i++) {
66 if (resource_int_value("uart", i, "flags", &flags))
68 if (devtype == UART_DEV_CONSOLE && !UART_FLAGS_CONSOLE(flags))
70 if (devtype == UART_DEV_DBGPORT && !UART_FLAGS_DBGPORT(flags))
73 * We have a possible device. Make sure it's enabled and
74 * that we have an I/O port.
76 if (resource_int_value("uart", i, "disabled", &ivar) == 0 &&
79 if (resource_int_value("uart", i, "port", &ivar) != 0 ||
83 di->ops = uart_ns8250_ops;
85 di->bas.bst = uart_bus_space_io;
86 if (bus_space_map(di->bas.bst, ivar, 8, 0, &di->bas.bsh) != 0)
90 if (resource_int_value("uart", i, "baud", &ivar) != 0)
95 di->parity = UART_PARITY_NONE;