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
Indexes created Sun Oct 19 21:10:07 GMT 2025