1 /* $NetBSD: lm_pnpbios.c,v 1.15 2011/07/01 18:14:15 dyoung Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Bill Squier.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: lm_pnpbios.c,v 1.15 2011/07/01 18:14:15 dyoung Exp $");
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/errno.h>
38 #include <sys/ioctl.h>
39 #include <sys/syslog.h>
40 #include <sys/device.h>
41 #include <sys/proc.h>
42
43 #include <sys/bus.h>
44
45 #include <dev/isa/isavar.h>
46 #include <dev/isa/isadmavar.h>
47
48 #include <i386/pnpbios/pnpbiosvar.h>
49
50 #include <dev/sysmon/sysmonvar.h>
51
52 #include <dev/ic/nslm7xvar.h>
53
54
55 int lm_pnpbios_match(device_t, cfdata_t, void *);
56 void lm_pnpbios_attach(device_t, device_t, void *);
57
58 int lm_pnpbios_hints_index(const char *);
59 uint8_t lm_pnpbios_readreg(struct lm_softc *, int);
60 void lm_pnpbios_writereg(struct lm_softc *, int, int);
61
62
63 CFATTACH_DECL_NEW(lm_pnpbios, sizeof(struct lm_softc),
64 lm_pnpbios_match, lm_pnpbios_attach, NULL, NULL);
65
66 /*
67 * XXX - no known pnpbios ids for lm series chips.
68 */
69 struct lm_pnpbios_hint {
70 char idstr[8];
71 int io_region_idx_lm7x;
72 };
73
74 /*
75 * Currently no known valid pnpbios id's - PNP0C02 is
76 * for reserved motherboard resources, probing it is bad.
77 */
78 struct lm_pnpbios_hint lm_pnpbios_hints[] = {
79 { { 0 }, 0 }
80 };
81
82
83 int
lm_pnpbios_hints_index(const char * idstr)84 lm_pnpbios_hints_index(const char *idstr)
85 {
86 int idx = 0;
87
88 while (lm_pnpbios_hints[idx].idstr[0] != 0) {
89 if (!strcmp(lm_pnpbios_hints[idx].idstr, idstr))
90 return idx;
91 ++idx;
92 }
93
94 return -1;
95 }
96
97 int
lm_pnpbios_match(device_t parent,cfdata_t match,void * aux)98 lm_pnpbios_match(device_t parent, cfdata_t match, void *aux)
99 {
100 struct pnpbiosdev_attach_args *aa = aux;
101 struct lm_pnpbios_hint *wph;
102 bus_space_tag_t iot;
103 bus_space_handle_t ioh;
104 int rv;
105
106 int wphi;
107
108 if ((wphi = lm_pnpbios_hints_index(aa->idstr)) == -1)
109 return 0;
110
111 wph = &lm_pnpbios_hints[wphi];
112
113 if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
114 &iot, &ioh)) {
115 return 0;
116 }
117
118 rv = lm_probe(iot, ioh);
119
120 pnpbios_io_unmap(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
121 iot, ioh);
122
123 return rv;
124 }
125
126 void
lm_pnpbios_attach(device_t parent,device_t self,void * aux)127 lm_pnpbios_attach(device_t parent, device_t self, void *aux)
128 {
129 struct lm_softc *sc = device_private(self);
130 struct pnpbiosdev_attach_args *aa = aux;
131 struct lm_pnpbios_hint *wph;
132
133 wph = &lm_pnpbios_hints[lm_pnpbios_hints_index(aa->idstr)];
134
135 if (pnpbios_io_map(aa->pbt, aa->resc, wph->io_region_idx_lm7x,
136 &sc->lm_iot, &sc->lm_ioh)) {
137 aprint_error(": can't map i/o space\n");
138 return;
139 }
140
141 aprint_naive("\n");
142 aprint_normal("\n");
143 pnpbios_print_devres(self, aa);
144
145 /* Bus-independent attach */
146 sc->lm_writereg = lm_pnpbios_writereg;
147 sc->lm_readreg = lm_pnpbios_readreg;
148
149 lm_attach(sc);
150 }
151
152 uint8_t
lm_pnpbios_readreg(struct lm_softc * sc,int reg)153 lm_pnpbios_readreg(struct lm_softc *sc, int reg)
154 {
155 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
156 return (bus_space_read_1(sc->lm_iot, sc->lm_ioh, LMC_DATA));
157 }
158
159
160 void
lm_pnpbios_writereg(struct lm_softc * sc,int reg,int val)161 lm_pnpbios_writereg(struct lm_softc *sc, int reg, int val)
162 {
163 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_ADDR, reg);
164 bus_space_write_1(sc->lm_iot, sc->lm_ioh, LMC_DATA, val);
165 }
166