1 /* $NetBSD: apple_smc_acpi.c,v 1.4 2017/05/22 14:07:00 riastradh 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 1.4 2017/05/22 14:07:00 riastradh 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 char *const apple_smc_ids[] = { 72 "APP0001", 73 NULL 74 }; 75 76 static int 77 apple_smc_acpi_match(device_t parent, cfdata_t match, void *aux) 78 { 79 struct acpi_attach_args *aa = aux; 80 81 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 82 return 0; 83 84 if (!acpi_match_hid(aa->aa_node->ad_devinfo, apple_smc_ids)) 85 return 0; 86 87 return 1; 88 } 89 90 static void 91 apple_smc_acpi_attach(device_t parent, device_t self, void *aux) 92 { 93 struct apple_smc_acpi_softc *sc = device_private(self); 94 struct apple_smc_tag *smc = &sc->sc_smc; 95 struct acpi_attach_args *aa = aux; 96 struct acpi_resources res; 97 struct acpi_io *io; 98 int rv; 99 100 smc->smc_dev = self; 101 102 aprint_normal("\n"); 103 aprint_naive("\n"); 104 105 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 106 &res, &acpi_resource_parse_ops_default); 107 if (ACPI_FAILURE(rv)) { 108 aprint_error_dev(self, "couldn't parse SMC resources: %s\n", 109 AcpiFormatException(rv)); 110 goto out0; 111 } 112 113 io = acpi_res_io(&res, 0); 114 if (io == NULL) { 115 aprint_error_dev(self, "no I/O resource\n"); 116 goto out1; 117 } 118 119 if (io->ar_length < APPLE_SMC_REGSIZE) { 120 aprint_error_dev(self, "I/O resources too small: %"PRId32"\n", 121 io->ar_length); 122 goto out1; 123 } 124 125 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, 126 &smc->smc_bsh) != 0) { 127 aprint_error_dev(self, "unable to map I/O registers\n"); 128 goto out1; 129 } 130 131 smc->smc_bst = aa->aa_iot; 132 smc->smc_size = io->ar_length; 133 134 apple_smc_attach(smc); 135 136 out1: acpi_resource_cleanup(&res); 137 out0: return; 138 } 139 140 static int 141 apple_smc_acpi_detach(device_t self, int flags) 142 { 143 struct apple_smc_acpi_softc *sc = device_private(self); 144 struct apple_smc_tag *smc = &sc->sc_smc; 145 int error; 146 147 if (smc->smc_size != 0) { 148 error = apple_smc_detach(smc, flags); 149 if (error) 150 return error; 151 152 bus_space_unmap(smc->smc_bst, smc->smc_bsh, smc->smc_size); 153 smc->smc_size = 0; 154 } 155 156 return 0; 157 } 158 159 static int 160 apple_smc_acpi_rescan(device_t self, const char *ifattr, const int *locs) 161 { 162 struct apple_smc_acpi_softc *const sc = device_private(self); 163 164 return apple_smc_rescan(&sc->sc_smc, ifattr, locs); 165 } 166 167 static void 168 apple_smc_acpi_child_detached(device_t self, device_t child) 169 { 170 struct apple_smc_acpi_softc *const sc = device_private(self); 171 172 apple_smc_child_detached(&sc->sc_smc, child); 173 } 174 175 MODULE(MODULE_CLASS_DRIVER, apple_smc_acpi, "apple_smc"); 176 177 #ifdef _MODULE 178 #include "ioconf.c" 179 #endif 180 181 static int 182 apple_smc_acpi_modcmd(modcmd_t cmd, void *arg __unused) 183 { 184 #ifdef _MODULE 185 int error; 186 #endif 187 188 switch (cmd) { 189 case MODULE_CMD_INIT: 190 #ifdef _MODULE 191 error = config_init_component(cfdriver_ioconf_apple_smc_acpi, 192 cfattach_ioconf_apple_smc_acpi, 193 cfdata_ioconf_apple_smc_acpi); 194 if (error) 195 return error; 196 #endif 197 return 0; 198 199 case MODULE_CMD_FINI: 200 #ifdef _MODULE 201 error = config_fini_component(cfdriver_ioconf_apple_smc_acpi, 202 cfattach_ioconf_apple_smc_acpi, 203 cfdata_ioconf_apple_smc_acpi); 204 if (error) 205 return error; 206 #endif 207 return 0; 208 209 default: 210 return ENOTTY; 211 } 212 } 213