1 /* $NetBSD: apple_smc_acpi.c,v 1.5 2021/01/29 15:49:55 thorpej Exp $ */
2
3 /*
4 * Apple System Management Controller: ACPI Attachment
5 */
6
7 /*-
8 * Copyright (c) 2013 The NetBSD Foundation, Inc.
9 * All rights reserved.
10 *
11 * This code is derived from software contributed to The NetBSD Foundation
12 * by Taylor R. Campbell.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: apple_smc_acpi.c,v 1.5 2021/01/29 15:49:55 thorpej Exp $");
38
39 #include <sys/types.h>
40 #include <sys/param.h>
41 #include <sys/bus.h>
42 #include <sys/module.h>
43
44 #include <dev/acpi/acpireg.h>
45 #include <dev/acpi/acpivar.h>
46
47 #include <dev/ic/apple_smcreg.h>
48 #include <dev/ic/apple_smcvar.h>
49
50 #define _COMPONENT ACPI_RESOURCE_COMPONENT
51 ACPI_MODULE_NAME ("apple_smc_acpi")
52
53 struct apple_smc_acpi_softc {
54 struct apple_smc_tag sc_smc;
55 };
56
57 static int apple_smc_acpi_match(device_t, cfdata_t, void *);
58 static void apple_smc_acpi_attach(device_t, device_t, void *);
59 static int apple_smc_acpi_detach(device_t, int);
60 static int apple_smc_acpi_rescan(device_t, const char *, const int *);
61 static void apple_smc_acpi_child_detached(device_t, device_t);
62
63 CFATTACH_DECL2_NEW(apple_smc_acpi, sizeof(struct apple_smc_acpi_softc),
64 apple_smc_acpi_match,
65 apple_smc_acpi_attach,
66 apple_smc_acpi_detach,
67 NULL /* activate */,
68 apple_smc_acpi_rescan,
69 apple_smc_acpi_child_detached);
70
71 static const struct device_compatible_entry compat_data[] = {
72 { .compat = "APP0001" },
73 DEVICE_COMPAT_EOL
74 };
75
76 static int
apple_smc_acpi_match(device_t parent,cfdata_t match,void * aux)77 apple_smc_acpi_match(device_t parent, cfdata_t match, void *aux)
78 {
79 struct acpi_attach_args *aa = aux;
80
81 return acpi_compatible_match(aa, compat_data);
82 }
83
84 static void
apple_smc_acpi_attach(device_t parent,device_t self,void * aux)85 apple_smc_acpi_attach(device_t parent, device_t self, void *aux)
86 {
87 struct apple_smc_acpi_softc *sc = device_private(self);
88 struct apple_smc_tag *smc = &sc->sc_smc;
89 struct acpi_attach_args *aa = aux;
90 struct acpi_resources res;
91 struct acpi_io *io;
92 int rv;
93
94 smc->smc_dev = self;
95
96 aprint_normal("\n");
97 aprint_naive("\n");
98
99 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
100 &res, &acpi_resource_parse_ops_default);
101 if (ACPI_FAILURE(rv)) {
102 aprint_error_dev(self, "couldn't parse SMC resources: %s\n",
103 AcpiFormatException(rv));
104 goto out0;
105 }
106
107 io = acpi_res_io(&res, 0);
108 if (io == NULL) {
109 aprint_error_dev(self, "no I/O resource\n");
110 goto out1;
111 }
112
113 if (io->ar_length < APPLE_SMC_REGSIZE) {
114 aprint_error_dev(self, "I/O resources too small: %"PRId32"\n",
115 io->ar_length);
116 goto out1;
117 }
118
119 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0,
120 &smc->smc_bsh) != 0) {
121 aprint_error_dev(self, "unable to map I/O registers\n");
122 goto out1;
123 }
124
125 smc->smc_bst = aa->aa_iot;
126 smc->smc_size = io->ar_length;
127
128 apple_smc_attach(smc);
129
130 out1: acpi_resource_cleanup(&res);
131 out0: return;
132 }
133
134 static int
apple_smc_acpi_detach(device_t self,int flags)135 apple_smc_acpi_detach(device_t self, int flags)
136 {
137 struct apple_smc_acpi_softc *sc = device_private(self);
138 struct apple_smc_tag *smc = &sc->sc_smc;
139 int error;
140
141 if (smc->smc_size != 0) {
142 error = apple_smc_detach(smc, flags);
143 if (error)
144 return error;
145
146 bus_space_unmap(smc->smc_bst, smc->smc_bsh, smc->smc_size);
147 smc->smc_size = 0;
148 }
149
150 return 0;
151 }
152
153 static int
apple_smc_acpi_rescan(device_t self,const char * ifattr,const int * locs)154 apple_smc_acpi_rescan(device_t self, const char *ifattr, const int *locs)
155 {
156 struct apple_smc_acpi_softc *const sc = device_private(self);
157
158 return apple_smc_rescan(&sc->sc_smc, ifattr, locs);
159 }
160
161 static void
apple_smc_acpi_child_detached(device_t self,device_t child)162 apple_smc_acpi_child_detached(device_t self, device_t child)
163 {
164 struct apple_smc_acpi_softc *const sc = device_private(self);
165
166 apple_smc_child_detached(&sc->sc_smc, child);
167 }
168
169 MODULE(MODULE_CLASS_DRIVER, apple_smc_acpi, "apple_smc");
170
171 #ifdef _MODULE
172 #include "ioconf.c"
173 #endif
174
175 static int
apple_smc_acpi_modcmd(modcmd_t cmd,void * arg __unused)176 apple_smc_acpi_modcmd(modcmd_t cmd, void *arg __unused)
177 {
178 #ifdef _MODULE
179 int error;
180 #endif
181
182 switch (cmd) {
183 case MODULE_CMD_INIT:
184 #ifdef _MODULE
185 error = config_init_component(cfdriver_ioconf_apple_smc_acpi,
186 cfattach_ioconf_apple_smc_acpi,
187 cfdata_ioconf_apple_smc_acpi);
188 if (error)
189 return error;
190 #endif
191 return 0;
192
193 case MODULE_CMD_FINI:
194 #ifdef _MODULE
195 error = config_fini_component(cfdriver_ioconf_apple_smc_acpi,
196 cfattach_ioconf_apple_smc_acpi,
197 cfdata_ioconf_apple_smc_acpi);
198 if (error)
199 return error;
200 #endif
201 return 0;
202
203 default:
204 return ENOTTY;
205 }
206 }
207