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), 65 apple_smc_acpi_match, 66 apple_smc_acpi_attach, 67 apple_smc_acpi_detach, 68 NULL /* activate */, 69 apple_smc_acpi_rescan, 70 apple_smc_acpi_child_detached); 71 72 static const struct device_compatible_entry compat_data[] = { 73 { .compat = "APP0001" }, 74 DEVICE_COMPAT_EOL 75 }; 76 77 static int 78 apple_smc_acpi_match(device_t parent, cfdata_t match, void *aux) 79 { 80 struct acpi_attach_args *aa = aux; 81 82 return acpi_compatible_match(aa, compat_data); 83 } 84 85 static void 86 apple_smc_acpi_attach(device_t parent, device_t self, void *aux) 87 { 88 struct apple_smc_acpi_softc *sc = device_private(self); 89 struct apple_smc_tag *smc = &sc->sc_smc; 90 struct acpi_attach_args *aa = aux; 91 struct acpi_resources res; 92 struct acpi_io *io; 93 int rv; 94 95 smc->smc_dev = self; 96 97 aprint_normal("\n"); 98 aprint_naive("\n"); 99 100 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 101 &res, &acpi_resource_parse_ops_default); 102 if (ACPI_FAILURE(rv)) { 103 aprint_error_dev(self, "couldn't parse SMC resources: %s\n", 104 AcpiFormatException(rv)); 105 goto out0; 106 } 107 108 io = acpi_res_io(&res, 0); 109 if (io == NULL) { 110 aprint_error_dev(self, "no I/O resource\n"); 111 goto out1; 112 } 113 114 if (io->ar_length < APPLE_SMC_REGSIZE) { 115 aprint_error_dev(self, "I/O resources too small: %"PRId32"\n", 116 io->ar_length); 117 goto out1; 118 } 119 120 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, 121 &smc->smc_bsh) != 0) { 122 aprint_error_dev(self, "unable to map I/O registers\n"); 123 goto out1; 124 } 125 126 smc->smc_bst = aa->aa_iot; 127 smc->smc_size = io->ar_length; 128 129 apple_smc_attach(smc); 130 131 out1: acpi_resource_cleanup(&res); 132 out0: return; 133 } 134 135 static int 136 apple_smc_acpi_detach(device_t self, int flags) 137 { 138 struct apple_smc_acpi_softc *sc = device_private(self); 139 struct apple_smc_tag *smc = &sc->sc_smc; 140 int error; 141 142 if (smc->smc_size != 0) { 143 error = apple_smc_detach(smc, flags); 144 if (error) 145 return error; 146 147 bus_space_unmap(smc->smc_bst, smc->smc_bsh, smc->smc_size); 148 smc->smc_size = 0; 149 } 150 151 return 0; 152 } 153 154 static int 155 apple_smc_acpi_rescan(device_t self, const char *ifattr, const int *locs) 156 { 157 struct apple_smc_acpi_softc *const sc = device_private(self); 158 159 return apple_smc_rescan(&sc->sc_smc, ifattr, locs); 160 } 161 162 static void 163 apple_smc_acpi_child_detached(device_t self, device_t child) 164 { 165 struct apple_smc_acpi_softc *const sc = device_private(self); 166 167 apple_smc_child_detached(&sc->sc_smc, child); 168 } 169 170 MODULE(MODULE_CLASS_DRIVER, apple_smc_acpi, "apple_smc"); 172 173 #ifdef _MODULE 174 #include "ioconf.c" 175 #endif 176 177 static int 178 apple_smc_acpi_modcmd(modcmd_t cmd, void *arg __unused) 179 { 180 #ifdef _MODULE 181 int error; 182 #endif 183 184 switch (cmd) { 185 case MODULE_CMD_INIT: 186 #ifdef _MODULE 187 error = config_init_component(cfdriver_ioconf_apple_smc_acpi, 188 cfattach_ioconf_apple_smc_acpi, 189 cfdata_ioconf_apple_smc_acpi); 190 if (error) 191 return error; 192 #endif 193 return 0; 194 195 case MODULE_CMD_FINI: 196 #ifdef _MODULE 197 error = config_fini_component(cfdriver_ioconf_apple_smc_acpi, 198 cfattach_ioconf_apple_smc_acpi, 199 cfdata_ioconf_apple_smc_acpi); 200 if (error) 201 return error; 202 #endif 203 return 0; 204 205 default: 206 return ENOTTY; 207 } 208 } 209
Indexes created Tue Sep 30 20:09:53 GMT 2025