1 /* $NetBSD: apple_smc_acpi.c,v 1.3 2014/04/01 17:49:40 riastradh 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 2014/04/01 17:49:40 riastradh 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), 61 apple_smc_acpi_match, 62 apple_smc_acpi_attach, 63 apple_smc_acpi_detach, 64 NULL /* activate */, 65 apple_smc_acpi_rescan, 66 apple_smc_acpi_child_detached); 67 68 static const char *const apple_smc_ids[] = { 69 "APP0001", 70 NULL 71 }; 72 73 static int 74 apple_smc_acpi_match(device_t parent, cfdata_t match, void *aux) 75 { 76 struct acpi_attach_args *aa = aux; 77 78 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 79 return 0; 80 81 if (!acpi_match_hid(aa->aa_node->ad_devinfo, apple_smc_ids)) 82 return 0; 83 84 return 1; 85 } 86 87 static void 88 apple_smc_acpi_attach(device_t parent, device_t self, void *aux) 89 { 90 struct apple_smc_acpi_softc *sc = device_private(self); 91 struct apple_smc_tag *smc = &sc->sc_smc; 92 struct acpi_attach_args *aa = aux; 93 struct acpi_resources res; 94 struct acpi_io *io; 95 int rv; 96 97 smc->smc_dev = self; 98 99 aprint_normal("\n"); 100 aprint_naive("\n"); 101 102 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 103 &res, &acpi_resource_parse_ops_default); 104 if (ACPI_FAILURE(rv)) { 105 aprint_error_dev(self, "couldn't parse SMC resources: %s\n", 106 AcpiFormatException(rv)); 107 goto out0; 108 } 109 110 io = acpi_res_io(&res, 0); 111 if (io == NULL) { 112 aprint_error_dev(self, "no I/O resource\n"); 113 goto out1; 114 } 115 116 if (io->ar_length < APPLE_SMC_REGSIZE) { 117 aprint_error_dev(self, "I/O resources too small: %"PRId32"\n", 118 io->ar_length); 119 goto out1; 120 } 121 122 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, 123 &smc->smc_bsh) != 0) { 124 aprint_error_dev(self, "unable to map I/O registers\n"); 125 goto out1; 126 } 127 128 smc->smc_bst = aa->aa_iot; 129 smc->smc_size = io->ar_length; 130 131 apple_smc_attach(smc); 132 133 out1: acpi_resource_cleanup(&res); 134 out0: return; 135 } 136 137 static int 138 apple_smc_acpi_detach(device_t self, int flags) 139 { 140 struct apple_smc_acpi_softc *sc = device_private(self); 141 struct apple_smc_tag *smc = &sc->sc_smc; 142 int error; 143 144 if (smc->smc_size != 0) { 145 error = apple_smc_detach(smc, flags); 146 if (error) 147 return error; 148 149 bus_space_unmap(smc->smc_bst, smc->smc_bsh, smc->smc_size); 150 smc->smc_size = 0; 151 } 152 153 return 0; 154 } 155 156 static int 157 apple_smc_acpi_rescan(device_t self, const char *ifattr, const int *locs) 158 { 159 struct apple_smc_acpi_softc *const sc = device_private(self); 160 161 return apple_smc_rescan(&sc->sc_smc, ifattr, locs); 162 } 163 164 static void 165 apple_smc_acpi_child_detached(device_t self, device_t child) 166 { 167 struct apple_smc_acpi_softc *const sc = device_private(self); 168 169 apple_smc_child_detached(&sc->sc_smc, child); 170 } 171 172 MODULE(MODULE_CLASS_DRIVER, apple_smc_acpi, "apple_smc"); 173 174 #ifdef _MODULE 175 #include "ioconf.c" 176 #endif 177 178 static int 179 apple_smc_acpi_modcmd(modcmd_t cmd, void *arg __unused) 180 { 181 #ifdef _MODULE 182 int error; 183 #endif 184 185 switch (cmd) { 186 case MODULE_CMD_INIT: 187 #ifdef _MODULE 188 error = config_init_component(cfdriver_ioconf_apple_smc_acpi, 189 cfattach_ioconf_apple_smc_acpi, 190 cfdata_ioconf_apple_smc_acpi); 191 if (error) 192 return error; 193 #endif 194 return 0; 195 196 case MODULE_CMD_FINI: 197 #ifdef _MODULE 198 error = config_fini_component(cfdriver_ioconf_apple_smc_acpi, 199 cfattach_ioconf_apple_smc_acpi, 200 cfdata_ioconf_apple_smc_acpi); 201 if (error) 202 return error; 203 #endif 204 return 0; 205 206 default: 207 return ENOTTY; 208 } 209 } 210