obio.c revision 294883 
1/*	$NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $	*/
2
3/*-
4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * On-board device autoconfiguration support for Intel IQ80321
40 * evaluation boards.
41 */
42
43#include <sys/cdefs.h>
44__FBSDID("$FreeBSD: head/sys/arm/xscale/i8134x/obio.c 294883 2016-01-27 02:23:54Z jhibbits $");
45
46#include <sys/param.h>
47#include <sys/systm.h>
48#include <sys/bus.h>
49#include <sys/kernel.h>
50#include <sys/module.h>
51#include <sys/rman.h>
52#include <sys/malloc.h>
53
54#include <machine/bus.h>
55
56#include <arm/xscale/i8134x/i81342reg.h>
57#include <arm/xscale/i8134x/obiovar.h>
58
59bus_space_tag_t obio_bs_tag;
60
61static int
62obio_probe(device_t dev)
63{
64	return (0);
65}
66
67static int
68obio_attach(device_t dev)
69{
70	struct obio_softc *sc = device_get_softc(dev);
71
72	obio_bs_tag = arm_base_bs_tag;
73	sc->oba_st = obio_bs_tag;
74	sc->oba_rman.rm_type = RMAN_ARRAY;
75	sc->oba_rman.rm_descr = "OBIO I/O";
76	if (rman_init(&sc->oba_rman) != 0 ||
77	    rman_manage_region(&sc->oba_rman,
78	    IOP34X_UART0_VADDR, IOP34X_UART1_VADDR + 0x40) != 0)
79		panic("obio_attach: failed to set up I/O rman");
80	sc->oba_irq_rman.rm_type = RMAN_ARRAY;
81	sc->oba_irq_rman.rm_descr = "OBIO IRQ";
82	if (rman_init(&sc->oba_irq_rman) != 0 ||
83	    rman_manage_region(&sc->oba_irq_rman, ICU_INT_UART0, ICU_INT_UART1) != 0)
84		panic("obio_attach: failed to set up IRQ rman");
85	device_add_child(dev, "uart", 0);
86	device_add_child(dev, "uart", 1);
87	bus_generic_probe(dev);
88	bus_generic_attach(dev);
89	return (0);
90}
91
92static struct resource *
93obio_alloc_resource(device_t bus, device_t child, int type, int *rid,
94    rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
95{
96	struct resource *rv;
97	struct rman *rm;
98	bus_space_tag_t bt = NULL;
99	bus_space_handle_t bh = 0;
100	struct obio_softc *sc = device_get_softc(bus);
101	int unit = device_get_unit(child);
102
103	switch (type) {
104	case SYS_RES_IRQ:
105		rm = &sc->oba_irq_rman;
106		if (unit == 0)
107			start = end = ICU_INT_UART0;
108		else
109			start = end = ICU_INT_UART1;
110		break;
111	case SYS_RES_MEMORY:
112		return (NULL);
113	case SYS_RES_IOPORT:
114		rm = &sc->oba_rman;
115		bt = sc->oba_st;
116		if (unit == 0) {
117			bh = IOP34X_UART0_VADDR;
118			start = bh;
119			end = IOP34X_UART1_VADDR;
120		} else {
121			bh = IOP34X_UART1_VADDR;
122			start = bh;
123			end = start + 0x40;
124		}
125		break;
126	default:
127		return (NULL);
128	}
129
130
131	rv = rman_reserve_resource(rm, start, end, count, flags, child);
132	if (rv == NULL)
133		return (NULL);
134	if (type == SYS_RES_IRQ)
135		return (rv);
136	rman_set_rid(rv, *rid);
137	rman_set_bustag(rv, bt);
138	rman_set_bushandle(rv, bh);
139
140	return (rv);
141
142}
143
144static int
145obio_activate_resource(device_t bus, device_t child, int type, int rid,
146    struct resource *r)
147{
148	return (0);
149}
150static device_method_t obio_methods[] = {
151	DEVMETHOD(device_probe, obio_probe),
152	DEVMETHOD(device_attach, obio_attach),
153
154	DEVMETHOD(bus_alloc_resource, obio_alloc_resource),
155	DEVMETHOD(bus_activate_resource, obio_activate_resource),
156	DEVMETHOD(bus_setup_intr,	bus_generic_setup_intr),
157	DEVMETHOD(bus_teardown_intr,	bus_generic_teardown_intr),
158
159	{0, 0},
160};
161
162static driver_t obio_driver = {
163	"obio",
164	obio_methods,
165	sizeof(struct obio_softc),
166};
167static devclass_t obio_devclass;
168
169DRIVER_MODULE(obio, iq, obio_driver, obio_devclass, 0, 0);
170