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[netbsd-mini2440.git] / sys / arch / arm / omap / omap_ocp.c
blob0dce3d7953bf36e8e98fa77b961116ea16cb7068
1 /* $NetBSD: omap_ocp.c,v 1.3 2008/11/21 17:13:07 matt Exp $ */
3 /*
4 * Autoconfiguration support for the Texas Instruments OMAP OCP bus.
5 * Based on arm/xscale/pxa2x0.c which in turn was derived
6 * from arm/sa11x0/sa11x0.c
8 * Copyright (c) 2002, 2005 Genetec Corporation. All rights reserved.
9 * Written by Hiroyuki Bessho for Genetec Corporation.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed for the NetBSD Project by
22 * Genetec Corporation.
23 * 4. The name of Genetec Corporation may not be used to endorse or
24 * promote products derived from this software without specific prior
25 * written permission.
27 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
39 * Copyright (c) 1997, 1998, 2001, The NetBSD Foundation, Inc.
40 * All rights reserved.
42 * This code is derived from software contributed to The NetBSD Foundation
43 * by IWAMOTO Toshihiro, Ichiro FUKUHARA and Paul Kranenburg.
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
54 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
55 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
64 * POSSIBILITY OF SUCH DAMAGE.
66 * Copyright (c) 1999
67 * Shin Takemura and PocketBSD Project. All rights reserved.
69 * Redistribution and use in source and binary forms, with or without
70 * modification, are permitted provided that the following conditions
71 * are met:
72 * 1. Redistributions of source code must retain the above copyright
73 * notice, this list of conditions and the following disclaimer.
74 * 2. Redistributions in binary form must reproduce the above copyright
75 * notice, this list of conditions and the following disclaimer in the
76 * documentation and/or other materials provided with the distribution.
77 * 3. All advertising materials mentioning features or use of this software
78 * must display the following acknowledgement:
79 * This product includes software developed by the PocketBSD project
80 * and its contributors.
81 * 4. Neither the name of the project nor the names of its contributors
82 * may be used to endorse or promote products derived from this software
83 * without specific prior written permission.
85 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
86 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
87 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
88 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
89 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
90 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
91 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
92 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
93 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
94 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
95 * SUCH DAMAGE.
98 #include <sys/cdefs.h>
99 __KERNEL_RCSID(0, "$NetBSD: omap_ocp.c,v 1.3 2008/11/21 17:13:07 matt Exp $");
101 #include "locators.h"
103 #include <sys/param.h>
104 #include <sys/systm.h>
105 #include <sys/device.h>
106 #include <sys/kernel.h>
107 #include <sys/reboot.h>
109 #include <machine/cpu.h>
110 #include <machine/bus.h>
112 #include <arm/cpufunc.h>
113 #include <arm/mainbus/mainbus.h>
114 #include <arm/omap/omap_reg.h>
115 #include <arm/omap/omap_ocp.h>
117 struct ocp_softc {
118 device_t sc_dev;
119 bus_dma_tag_t sc_dmac;
122 /* prototypes */
123 static int ocp_match(device_t, cfdata_t, void *);
124 static void ocp_attach(device_t, device_t, void *);
125 static int ocp_search(device_t, cfdata_t, const int *, void *);
126 static int ocp_print(void *, const char *);
128 /* attach structures */
129 CFATTACH_DECL_NEW(ocp, sizeof(struct ocp_softc),
130 ocp_match, ocp_attach, NULL, NULL);
132 static int ocp_attached;
134 static int
135 ocp_match(device_t parent, cfdata_t match, void *aux)
137 if (ocp_attached)
138 return 0;
139 return 1;
142 static void
143 ocp_attach(device_t parent, device_t self, void *aux)
145 struct ocp_softc *sc = device_private(self);
147 ocp_attached = 1;
149 #if NOMAPDMAC > 0
150 #error DMA not implemented
151 sc->sc_dmac = &omap_bus_dma_tag;
152 #else
153 sc->sc_dmac = NULL;
154 #endif
156 aprint_normal(": OCP Bus\n");
157 aprint_naive("\n");
160 * Attach all our devices
162 config_search_ia(ocp_search, self, "ocp", NULL);
165 static int
166 ocp_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
168 struct ocp_softc *sc = device_private(parent);
169 struct ocp_attach_args aa;
171 switch (cf->cf_loc[OCPCF_MULT]) {
172 case 1:
173 aa.ocp_iot = &omap_bs_tag;
174 break;
175 case 2:
176 aa.ocp_iot = &omap_a2x_bs_tag;
177 break;
178 case 4:
179 aa.ocp_iot = &omap_a4x_bs_tag;
180 break;
181 default:
182 panic("Unsupported OCP multiplier.");
183 break;
185 aa.ocp_dmac = sc->sc_dmac;
186 aa.ocp_addr = cf->cf_loc[OCPCF_ADDR];
187 aa.ocp_size = cf->cf_loc[OCPCF_SIZE];
188 aa.ocp_intr = cf->cf_loc[OCPCF_INTR];
190 if (config_match(parent, cf, &aa))
191 config_attach(parent, cf, &aa, ocp_print);
193 return 0;
196 static int
197 ocp_print(void *aux, const char *name)
199 struct ocp_attach_args *sa = (struct ocp_attach_args*)aux;
201 if (sa->ocp_addr != OCPCF_ADDR_DEFAULT) {
202 aprint_normal(" addr 0x%08lx", sa->ocp_addr);
203 if (sa->ocp_size > OCPCF_SIZE_DEFAULT)
204 aprint_normal("-0x%08lx", sa->ocp_addr + sa->ocp_size-1);
206 if (sa->ocp_intr != OCPCF_INTR_DEFAULT)
207 aprint_normal(" intr %d", sa->ocp_intr);
209 return (UNCONF);