1/*-
2 * Copyright (c) 2003, 2004 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("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/bus.h>
33
34#include <machine/bus.h>
35#include <machine/dig64.h>
36#include <machine/md_var.h>
37#include <machine/vmparam.h>
38
39#include <dev/uart/uart.h>
40#include <dev/uart/uart_cpu.h>
41
42bus_space_tag_t uart_bus_space_io = IA64_BUS_SPACE_IO;
43bus_space_tag_t uart_bus_space_mem = IA64_BUS_SPACE_MEM;
44
45static int dig64_to_uart_parity[] = {
46	UART_PARITY_NONE, UART_PARITY_NONE, UART_PARITY_EVEN,
47	UART_PARITY_ODD, UART_PARITY_MARK, UART_PARITY_SPACE
48};
49
50int
51uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
52{
53
54	return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
55}
56
57int
58uart_cpu_getdev(int devtype, struct uart_devinfo *di)
59{
60	struct dig64_hcdp_table *tbl;
61	struct dig64_hcdp_entry *ent;
62	struct uart_class *class;
63	bus_addr_t addr;
64	uint64_t hcdp;
65	unsigned int i;
66
67	class = &uart_ns8250_class;
68	if (class == NULL)
69		return (ENXIO);
70
71	/*
72	 * Use the DIG64 HCDP table if present.
73	 */
74	hcdp = ia64_get_hcdp();
75	if (hcdp != 0) {
76		tbl = (void*)IA64_PHYS_TO_RR7(hcdp);
77		for (i = 0; i < tbl->entries; i++) {
78			ent = tbl->entry + i;
79
80			if (devtype == UART_DEV_CONSOLE &&
81			    ent->type != DIG64_HCDP_CONSOLE)
82				continue;
83
84			if (devtype == UART_DEV_DBGPORT &&
85			    ent->type != DIG64_HCDP_DBGPORT)
86				continue;
87
88			addr = ent->address.addr_high;
89			addr = (addr << 32) + ent->address.addr_low;
90			di->ops = uart_getops(class);
91			di->bas.chan = 0;
92			di->bas.bst = (ent->address.addr_space == 0)
93			    ? uart_bus_space_mem : uart_bus_space_io;
94			if (bus_space_map(di->bas.bst, addr,
95			    uart_getrange(class), 0, &di->bas.bsh) != 0)
96				continue;
97			di->bas.regshft = 0;
98			di->bas.rclk = ent->pclock << 4;
99			/* We don't deal with 64-bit baud rates. */
100			di->baudrate = ent->baud_low;
101			di->databits = ent->databits;
102			di->stopbits = ent->stopbits;
103			di->parity = (ent->parity >= 6) ? UART_PARITY_NONE
104			    : dig64_to_uart_parity[ent->parity];
105			return (0);
106		}
107
108		/* FALLTHROUGH */
109	}
110
111	/* Check the environment. */
112	return (uart_getenv(devtype, di, class));
113}
114