Annotation of sys/arch/macppc/dev/uni_n.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: uni_n.c,v 1.15 2006/06/19 22:41:35 miod Exp $ */
2:
3: /*
4: * Copyright (c) 1998-2001 Dale Rahn.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26: */
27:
28: #include <sys/param.h>
29: #include <sys/device.h>
30: #include <sys/systm.h>
31:
32: #include <machine/bus.h>
33: #include <machine/autoconf.h>
34:
35: #include <dev/ofw/openfirm.h>
36:
37: struct memc_softc {
38: struct device sc_dev;
39: struct ppc_bus_space sc_membus_space;
40:
41: };
42:
43: int memcmatch(struct device *, void *, void *);
44: void memcattach(struct device *, struct device *, void *);
45: void memc_attach_children(struct memc_softc *sc, int memc_node);
46: int memc_print(void *aux, const char *name);
47:
48: /* Driver definition */
49: struct cfdriver memc_cd = {
50: NULL, "memc", DV_DULL
51: };
52: /* Driver definition */
53: struct cfattach memc_ca = {
54: sizeof(struct memc_softc), memcmatch, memcattach
55: };
56:
57: void uni_n_config(char *, int);
58:
59: int
60: memcmatch(struct device *parent, void *cf, void *aux)
61: {
62: struct confargs *ca = aux;
63: static int memc_attached = 0;
64:
65: /* allow only one instance */
66: if (memc_attached == 0) {
67: if (0 == strcmp (ca->ca_name, "memc"))
68: return 1;
69: }
70: return 0;
71: }
72:
73: void
74: memcattach(struct device *parent, struct device *self, void *aux)
75: {
76: struct confargs *ca = aux;
77: int len;
78: char name[64];
79: struct memc_softc *sc = (struct memc_softc *)self;
80:
81: len = OF_getprop(ca->ca_node, "name", name, sizeof name);
82: if (len > 0)
83: name[len] = 0;
84:
85: uni_n_config(name, ca->ca_node);
86:
87: printf (": %s\n", name);
88:
89: memc_attach_children(sc, ca->ca_node);
90: }
91:
92: void
93: memc_attach_children(struct memc_softc *sc, int memc_node)
94: {
95: struct confargs ca;
96: int node, namelen;
97: u_int32_t reg[20];
98: char name[32];
99:
100: sc->sc_membus_space.bus_base = ca.ca_baseaddr;
101:
102: ca.ca_iot = &sc->sc_membus_space;
103: ca.ca_dmat = 0; /* XXX */
104: ca.ca_baseaddr = 0; /* XXX */
105: sc->sc_membus_space.bus_base = ca.ca_baseaddr;
106:
107: for (node = OF_child(memc_node); node; node = OF_peer(node)) {
108: namelen = OF_getprop(node, "name", name, sizeof(name));
109: if (namelen < 0)
110: continue;
111: if (namelen >= sizeof(name))
112: continue;
113: name[namelen] = 0;
114:
115: ca.ca_name = name;
116: ca.ca_node = node;
117: ca.ca_nreg = OF_getprop(node, "reg", reg, sizeof(reg));
118: ca.ca_reg = reg;
119: ca.ca_nintr = 0; /* XXX */
120: ca.ca_intr = NULL; /* XXX */
121:
122: config_found((struct device *)sc, &ca, memc_print);
123: }
124: }
125:
126: int
127: memc_print(void *aux, const char *name)
128: {
129: struct confargs *ca = aux;
130: /* we dont want extra stuff printing */
131: if (name)
132: printf("\"%s\" at %s", ca->ca_name, name);
133: if (ca->ca_nreg > 0)
134: printf(" offset 0x%x", ca->ca_reg[0]);
135: return UNCONF;
136: }
137:
138: void
139: uni_n_config(char *name, int handle)
140: {
141: char *baseaddr;
142: int *ctladdr;
143: u_int32_t address;
144:
145: /* sanity test */
146: if (strcmp (name, "uni-n") == 0 || strcmp (name, "u3") == 0
147: || strcmp (name, "u4") == 0) {
148: if (OF_getprop(handle, "reg", &address,
149: sizeof address) > 0) {
150: baseaddr = mapiodev(address, NBPG);
151: ctladdr = (void *)(baseaddr + 0x20);
152: *ctladdr |= 0x02;
153: }
154: }
155: }
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