apple_smc_acpi.c revision 1.3.10.2 1 /* $NetBSD: apple_smc_acpi.c,v 1.3.10.2 2014/08/20 00:03:35 tls Exp $ */
2
3 /*
4 * Apple System Management Controller: ACPI Attachment
5 */
6
7 /*-
8 * Copyright (c) 2013 Taylor R. Campbell
9 * All rights reserved.
10 *
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 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: apple_smc_acpi.c,v 1.3.10.2 2014/08/20 00:03:35 tls Exp $");
35
36 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/bus.h>
39 #include <sys/module.h>
40
41 #include <dev/acpi/acpireg.h>
42 #include <dev/acpi/acpivar.h>
43
44 #include <dev/ic/apple_smcreg.h>
45 #include <dev/ic/apple_smcvar.h>
46
47 #define _COMPONENT ACPI_RESOURCE_COMPONENT
48 ACPI_MODULE_NAME ("apple_smc_acpi")
49
50 struct apple_smc_acpi_softc {
51 struct apple_smc_tag sc_smc;
52 };
53
54 static int apple_smc_acpi_match(device_t, cfdata_t, void *);
55 static void apple_smc_acpi_attach(device_t, device_t, void *);
56 static int apple_smc_acpi_detach(device_t, int);
57 static int apple_smc_acpi_rescan(device_t, const char *, const int *);
58 static void apple_smc_acpi_child_detached(device_t, device_t);
59
60 CFATTACH_DECL2_NEW(apple_smc_acpi, sizeof(struct apple_smc_acpi_softc),
62 apple_smc_acpi_match,
63 apple_smc_acpi_attach,
64 apple_smc_acpi_detach,
65 NULL /* activate */,
66 apple_smc_acpi_rescan,
67 apple_smc_acpi_child_detached);
68
69 static const char *const apple_smc_ids[] = {
70 "APP0001",
71 NULL
72 };
73
74 static int
75 apple_smc_acpi_match(device_t parent, cfdata_t match, void *aux)
76 {
77 struct acpi_attach_args *aa = aux;
78
79 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
80 return 0;
81
82 if (!acpi_match_hid(aa->aa_node->ad_devinfo, apple_smc_ids))
83 return 0;
84
85 return 1;
86 }
87
88 static void
89 apple_smc_acpi_attach(device_t parent, device_t self, void *aux)
90 {
91 struct apple_smc_acpi_softc *sc = device_private(self);
92 struct apple_smc_tag *smc = &sc->sc_smc;
93 struct acpi_attach_args *aa = aux;
94 struct acpi_resources res;
95 struct acpi_io *io;
96 int rv;
97
98 smc->smc_dev = self;
99
100 aprint_normal("\n");
101 aprint_naive("\n");
102
103 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
104 &res, &acpi_resource_parse_ops_default);
105 if (ACPI_FAILURE(rv)) {
106 aprint_error_dev(self, "couldn't parse SMC resources: %s\n",
107 AcpiFormatException(rv));
108 goto out0;
109 }
110
111 io = acpi_res_io(&res, 0);
112 if (io == NULL) {
113 aprint_error_dev(self, "no I/O resource\n");
114 goto out1;
115 }
116
117 if (io->ar_length < APPLE_SMC_REGSIZE) {
118 aprint_error_dev(self, "I/O resources too small: %"PRId32"\n",
119 io->ar_length);
120 goto out1;
121 }
122
123 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0,
124 &smc->smc_bsh) != 0) {
125 aprint_error_dev(self, "unable to map I/O registers\n");
126 goto out1;
127 }
128
129 smc->smc_bst = aa->aa_iot;
130 smc->smc_size = io->ar_length;
131
132 apple_smc_attach(smc);
133
134 out1: acpi_resource_cleanup(&res);
135 out0: return;
136 }
137
138 static int
139 apple_smc_acpi_detach(device_t self, int flags)
140 {
141 struct apple_smc_acpi_softc *sc = device_private(self);
142 struct apple_smc_tag *smc = &sc->sc_smc;
143 int error;
144
145 if (smc->smc_size != 0) {
146 error = apple_smc_detach(smc, flags);
147 if (error)
148 return error;
149
150 bus_space_unmap(smc->smc_bst, smc->smc_bsh, smc->smc_size);
151 smc->smc_size = 0;
152 }
153
154 return 0;
155 }
156
157 static int
158 apple_smc_acpi_rescan(device_t self, const char *ifattr, const int *locs)
159 {
160 struct apple_smc_acpi_softc *const sc = device_private(self);
161
162 return apple_smc_rescan(&sc->sc_smc, ifattr, locs);
163 }
164
165 static void
166 apple_smc_acpi_child_detached(device_t self, device_t child)
167 {
168 struct apple_smc_acpi_softc *const sc = device_private(self);
169
170 apple_smc_child_detached(&sc->sc_smc, child);
171 }
172
173 MODULE(MODULE_CLASS_DRIVER, apple_smc_acpi, "apple_smc");
175
176 #ifdef _MODULE
177 #include "ioconf.c"
178 #endif
179
180 static int
181 apple_smc_acpi_modcmd(modcmd_t cmd, void *arg __unused)
182 {
183 #ifdef _MODULE
184 int error;
185 #endif
186
187 switch (cmd) {
188 case MODULE_CMD_INIT:
189 #ifdef _MODULE
190 error = config_init_component(cfdriver_ioconf_apple_smc_acpi,
191 cfattach_ioconf_apple_smc_acpi,
192 cfdata_ioconf_apple_smc_acpi);
193 if (error)
194 return error;
195 #endif
196 return 0;
197
198 case MODULE_CMD_FINI:
199 #ifdef _MODULE
200 error = config_fini_component(cfdriver_ioconf_apple_smc_acpi,
201 cfattach_ioconf_apple_smc_acpi,
202 cfdata_ioconf_apple_smc_acpi);
203 if (error)
204 return error;
205 #endif
206 return 0;
207
208 default:
209 return ENOTTY;
210 }
211 }
212