acpi_cpu.c revision 1.18.2.2
1 1.18.2.2 uebayasi /* $NetBSD: acpi_cpu.c,v 1.18.2.2 2010/08/17 06:45:59 uebayasi Exp $ */ 2 1.18.2.2 uebayasi 3 1.18.2.2 uebayasi /*- 4 1.18.2.2 uebayasi * Copyright (c) 2010 Jukka Ruohonen <jruohonen (at) iki.fi> 5 1.18.2.2 uebayasi * All rights reserved. 6 1.18.2.2 uebayasi * 7 1.18.2.2 uebayasi * Redistribution and use in source and binary forms, with or without 8 1.18.2.2 uebayasi * modification, are permitted provided that the following conditions 9 1.18.2.2 uebayasi * are met: 10 1.18.2.2 uebayasi * 11 1.18.2.2 uebayasi * 1. Redistributions of source code must retain the above copyright 12 1.18.2.2 uebayasi * notice, this list of conditions and the following disclaimer. 13 1.18.2.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 14 1.18.2.2 uebayasi * notice, this list of conditions and the following disclaimer in the 15 1.18.2.2 uebayasi * documentation and/or other materials provided with the distribution. 16 1.18.2.2 uebayasi * 17 1.18.2.2 uebayasi * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 1.18.2.2 uebayasi * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 1.18.2.2 uebayasi * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 1.18.2.2 uebayasi * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 1.18.2.2 uebayasi * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 1.18.2.2 uebayasi * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 1.18.2.2 uebayasi * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 1.18.2.2 uebayasi * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 1.18.2.2 uebayasi * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 1.18.2.2 uebayasi * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 1.18.2.2 uebayasi * SUCH DAMAGE. 28 1.18.2.2 uebayasi */ 29 1.18.2.2 uebayasi #include <sys/cdefs.h> 30 1.18.2.2 uebayasi __KERNEL_RCSID(0, "$NetBSD: acpi_cpu.c,v 1.18.2.2 2010/08/17 06:45:59 uebayasi Exp $"); 31 1.18.2.2 uebayasi 32 1.18.2.2 uebayasi #include <sys/param.h> 33 1.18.2.2 uebayasi #include <sys/cpu.h> 34 1.18.2.2 uebayasi #include <sys/kernel.h> 35 1.18.2.2 uebayasi #include <sys/kmem.h> 36 1.18.2.2 uebayasi #include <sys/module.h> 37 1.18.2.2 uebayasi #include <sys/mutex.h> 38 1.18.2.2 uebayasi #include <sys/once.h> 39 1.18.2.2 uebayasi 40 1.18.2.2 uebayasi #include <dev/acpi/acpireg.h> 41 1.18.2.2 uebayasi #include <dev/acpi/acpivar.h> 42 1.18.2.2 uebayasi #include <dev/acpi/acpi_cpu.h> 43 1.18.2.2 uebayasi 44 1.18.2.2 uebayasi #include <machine/acpi_machdep.h> 45 1.18.2.2 uebayasi 46 1.18.2.2 uebayasi #define _COMPONENT ACPI_BUS_COMPONENT 47 1.18.2.2 uebayasi ACPI_MODULE_NAME ("acpi_cpu") 48 1.18.2.2 uebayasi 49 1.18.2.2 uebayasi static int acpicpu_match(device_t, cfdata_t, void *); 50 1.18.2.2 uebayasi static void acpicpu_attach(device_t, device_t, void *); 51 1.18.2.2 uebayasi static int acpicpu_detach(device_t, int); 52 1.18.2.2 uebayasi static int acpicpu_once_attach(void); 53 1.18.2.2 uebayasi static int acpicpu_once_detach(void); 54 1.18.2.2 uebayasi 55 1.18.2.2 uebayasi static int acpicpu_object(ACPI_HANDLE, struct acpicpu_object *); 56 1.18.2.2 uebayasi static cpuid_t acpicpu_id(uint32_t); 57 1.18.2.2 uebayasi static uint32_t acpicpu_cap(struct acpicpu_softc *); 58 1.18.2.2 uebayasi static ACPI_OBJECT *acpicpu_cap_init(void); 59 1.18.2.2 uebayasi static ACPI_STATUS acpicpu_cap_pdc(ACPI_HANDLE); 60 1.18.2.2 uebayasi static ACPI_STATUS acpicpu_cap_osc(ACPI_HANDLE, uint32_t *); 61 1.18.2.2 uebayasi static const char *acpicpu_cap_oscerr(uint32_t); 62 1.18.2.2 uebayasi static void acpicpu_notify(ACPI_HANDLE, uint32_t, void *); 63 1.18.2.2 uebayasi static bool acpicpu_suspend(device_t, const pmf_qual_t *); 64 1.18.2.2 uebayasi static bool acpicpu_resume(device_t, const pmf_qual_t *); 65 1.18.2.2 uebayasi 66 1.18.2.2 uebayasi struct acpicpu_softc **acpicpu_sc = NULL; 67 1.18.2.2 uebayasi 68 1.18.2.2 uebayasi static const char * const acpicpu_hid[] = { 69 1.18.2.2 uebayasi "ACPI0007", 70 1.18.2.2 uebayasi NULL 71 1.18.2.2 uebayasi }; 72 1.18.2.2 uebayasi 73 1.18.2.2 uebayasi CFATTACH_DECL_NEW(acpicpu, sizeof(struct acpicpu_softc), 74 1.18.2.2 uebayasi acpicpu_match, acpicpu_attach, acpicpu_detach, NULL); 75 1.18.2.2 uebayasi 76 1.18.2.2 uebayasi static int 77 1.18.2.2 uebayasi acpicpu_match(device_t parent, cfdata_t match, void *aux) 78 1.18.2.2 uebayasi { 79 1.18.2.2 uebayasi struct acpi_attach_args *aa = aux; 80 1.18.2.2 uebayasi struct acpicpu_object ao; 81 1.18.2.2 uebayasi int rv; 82 1.18.2.2 uebayasi 83 1.18.2.2 uebayasi if (aa->aa_node->ad_type != ACPI_TYPE_PROCESSOR) 84 1.18.2.2 uebayasi return 0; 85 1.18.2.2 uebayasi 86 1.18.2.2 uebayasi if (acpi_match_hid(aa->aa_node->ad_devinfo, acpicpu_hid) != 0) 87 1.18.2.2 uebayasi return 1; 88 1.18.2.2 uebayasi 89 1.18.2.2 uebayasi rv = acpicpu_object(aa->aa_node->ad_handle, &ao); 90 1.18.2.2 uebayasi 91 1.18.2.2 uebayasi if (rv != 0 || acpicpu_id(ao.ao_procid) == 0xFFFFFF) 92 1.18.2.2 uebayasi return 0; 93 1.18.2.2 uebayasi 94 1.18.2.2 uebayasi return 1; 95 1.18.2.2 uebayasi } 96 1.18.2.2 uebayasi 97 1.18.2.2 uebayasi static void 98 1.18.2.2 uebayasi acpicpu_attach(device_t parent, device_t self, void *aux) 99 1.18.2.2 uebayasi { 100 1.18.2.2 uebayasi struct acpicpu_softc *sc = device_private(self); 101 1.18.2.2 uebayasi struct acpi_attach_args *aa = aux; 102 1.18.2.2 uebayasi static ONCE_DECL(once_attach); 103 1.18.2.2 uebayasi int rv; 104 1.18.2.2 uebayasi 105 1.18.2.2 uebayasi rv = acpicpu_object(aa->aa_node->ad_handle, &sc->sc_object); 106 1.18.2.2 uebayasi 107 1.18.2.2 uebayasi if (rv != 0) 108 1.18.2.2 uebayasi return; 109 1.18.2.2 uebayasi 110 1.18.2.2 uebayasi rv = RUN_ONCE(&once_attach, acpicpu_once_attach); 111 1.18.2.2 uebayasi 112 1.18.2.2 uebayasi if (rv != 0) 113 1.18.2.2 uebayasi return; 114 1.18.2.2 uebayasi 115 1.18.2.2 uebayasi KASSERT(acpicpu_sc != NULL); 116 1.18.2.2 uebayasi 117 1.18.2.2 uebayasi sc->sc_dev = self; 118 1.18.2.2 uebayasi sc->sc_cold = false; 119 1.18.2.2 uebayasi sc->sc_mapped = false; 120 1.18.2.2 uebayasi sc->sc_iot = aa->aa_iot; 121 1.18.2.2 uebayasi sc->sc_node = aa->aa_node; 122 1.18.2.2 uebayasi sc->sc_cpuid = acpicpu_id(sc->sc_object.ao_procid); 123 1.18.2.2 uebayasi 124 1.18.2.2 uebayasi if (sc->sc_cpuid == 0xFFFFFF) { 125 1.18.2.2 uebayasi aprint_error(": invalid CPU ID\n"); 126 1.18.2.2 uebayasi return; 127 1.18.2.2 uebayasi } 128 1.18.2.2 uebayasi 129 1.18.2.2 uebayasi if (acpicpu_sc[sc->sc_cpuid] != NULL) { 130 1.18.2.2 uebayasi aprint_error(": already attached\n"); 131 1.18.2.2 uebayasi return; 132 1.18.2.2 uebayasi } 133 1.18.2.2 uebayasi 134 1.18.2.2 uebayasi acpicpu_sc[sc->sc_cpuid] = sc; 135 1.18.2.2 uebayasi 136 1.18.2.2 uebayasi sc->sc_cap = acpicpu_cap(sc); 137 1.18.2.2 uebayasi sc->sc_flags |= acpicpu_md_quirks(); 138 1.18.2.2 uebayasi 139 1.18.2.2 uebayasi mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NONE); 140 1.18.2.2 uebayasi 141 1.18.2.2 uebayasi aprint_naive("\n"); 142 1.18.2.2 uebayasi aprint_normal(": ACPI CPU\n"); 143 1.18.2.2 uebayasi 144 1.18.2.2 uebayasi /* 145 1.18.2.2 uebayasi * We should claim the bus space. However, we do this only 146 1.18.2.2 uebayasi * to announce that the space is in use. As is noted in 147 1.18.2.2 uebayasi * ichlpcib(4), we can continue our I/O without bus_space(9). 148 1.18.2.2 uebayasi */ 149 1.18.2.2 uebayasi if (sc->sc_object.ao_pblklen == 6 && sc->sc_object.ao_pblkaddr != 0) { 150 1.18.2.2 uebayasi 151 1.18.2.2 uebayasi rv = bus_space_map(sc->sc_iot, sc->sc_object.ao_pblkaddr, 152 1.18.2.2 uebayasi sc->sc_object.ao_pblklen, 0, &sc->sc_ioh); 153 1.18.2.2 uebayasi 154 1.18.2.2 uebayasi if (rv == 0) 155 1.18.2.2 uebayasi sc->sc_mapped = true; 156 1.18.2.2 uebayasi } 157 1.18.2.2 uebayasi 158 1.18.2.2 uebayasi acpicpu_cstate_attach(self); 159 1.18.2.2 uebayasi acpicpu_pstate_attach(self); 160 1.18.2.2 uebayasi acpicpu_tstate_attach(self); 161 1.18.2.2 uebayasi 162 1.18.2.2 uebayasi (void)config_finalize_register(self, acpicpu_cstate_start); 163 1.18.2.2 uebayasi (void)config_finalize_register(self, acpicpu_pstate_start); 164 1.18.2.2 uebayasi (void)config_finalize_register(self, acpicpu_tstate_start); 165 1.18.2.2 uebayasi 166 1.18.2.2 uebayasi (void)acpi_register_notify(sc->sc_node, acpicpu_notify); 167 1.18.2.2 uebayasi (void)pmf_device_register(self, acpicpu_suspend, acpicpu_resume); 168 1.18.2.2 uebayasi 169 1.18.2.2 uebayasi aprint_debug_dev(sc->sc_dev, "cap 0x%02x, " 170 1.18.2.2 uebayasi "flags 0x%06x\n", sc->sc_cap, sc->sc_flags); 171 1.18.2.2 uebayasi } 172 1.18.2.2 uebayasi 173 1.18.2.2 uebayasi static int 174 1.18.2.2 uebayasi acpicpu_detach(device_t self, int flags) 175 1.18.2.2 uebayasi { 176 1.18.2.2 uebayasi struct acpicpu_softc *sc = device_private(self); 177 1.18.2.2 uebayasi const bus_addr_t addr = sc->sc_object.ao_pblkaddr; 178 1.18.2.2 uebayasi static ONCE_DECL(once_detach); 179 1.18.2.2 uebayasi int rv = 0; 180 1.18.2.2 uebayasi 181 1.18.2.2 uebayasi sc->sc_cold = true; 182 1.18.2.2 uebayasi acpi_deregister_notify(sc->sc_node); 183 1.18.2.2 uebayasi 184 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 185 1.18.2.2 uebayasi rv = acpicpu_cstate_detach(self); 186 1.18.2.2 uebayasi 187 1.18.2.2 uebayasi if (rv != 0) 188 1.18.2.2 uebayasi return rv; 189 1.18.2.2 uebayasi 190 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 191 1.18.2.2 uebayasi rv = acpicpu_pstate_detach(self); 192 1.18.2.2 uebayasi 193 1.18.2.2 uebayasi if (rv != 0) 194 1.18.2.2 uebayasi return rv; 195 1.18.2.2 uebayasi 196 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 197 1.18.2.2 uebayasi rv = acpicpu_tstate_detach(self); 198 1.18.2.2 uebayasi 199 1.18.2.2 uebayasi if (rv != 0) 200 1.18.2.2 uebayasi return rv; 201 1.18.2.2 uebayasi 202 1.18.2.2 uebayasi rv = RUN_ONCE(&once_detach, acpicpu_once_detach); 203 1.18.2.2 uebayasi 204 1.18.2.2 uebayasi if (rv != 0) 205 1.18.2.2 uebayasi return rv; 206 1.18.2.2 uebayasi 207 1.18.2.2 uebayasi if (sc->sc_mapped != false) 208 1.18.2.2 uebayasi bus_space_unmap(sc->sc_iot, sc->sc_ioh, addr); 209 1.18.2.2 uebayasi 210 1.18.2.2 uebayasi mutex_destroy(&sc->sc_mtx); 211 1.18.2.2 uebayasi 212 1.18.2.2 uebayasi return 0; 213 1.18.2.2 uebayasi } 214 1.18.2.2 uebayasi 215 1.18.2.2 uebayasi static int 216 1.18.2.2 uebayasi acpicpu_once_attach(void) 217 1.18.2.2 uebayasi { 218 1.18.2.2 uebayasi struct acpicpu_softc *sc; 219 1.18.2.2 uebayasi unsigned int i; 220 1.18.2.2 uebayasi 221 1.18.2.2 uebayasi acpicpu_sc = kmem_zalloc(maxcpus * sizeof(*sc), KM_SLEEP); 222 1.18.2.2 uebayasi 223 1.18.2.2 uebayasi if (acpicpu_sc == NULL) 224 1.18.2.2 uebayasi return ENOMEM; 225 1.18.2.2 uebayasi 226 1.18.2.2 uebayasi for (i = 0; i < maxcpus; i++) 227 1.18.2.2 uebayasi acpicpu_sc[i] = NULL; 228 1.18.2.2 uebayasi 229 1.18.2.2 uebayasi return 0; 230 1.18.2.2 uebayasi } 231 1.18.2.2 uebayasi 232 1.18.2.2 uebayasi static int 233 1.18.2.2 uebayasi acpicpu_once_detach(void) 234 1.18.2.2 uebayasi { 235 1.18.2.2 uebayasi struct acpicpu_softc *sc; 236 1.18.2.2 uebayasi 237 1.18.2.2 uebayasi KASSERT(acpicpu_sc != NULL); 238 1.18.2.2 uebayasi 239 1.18.2.2 uebayasi kmem_free(acpicpu_sc, maxcpus * sizeof(*sc)); 240 1.18.2.2 uebayasi acpicpu_sc = NULL; 241 1.18.2.2 uebayasi 242 1.18.2.2 uebayasi return 0; 243 1.18.2.2 uebayasi } 244 1.18.2.2 uebayasi 245 1.18.2.2 uebayasi static int 246 1.18.2.2 uebayasi acpicpu_object(ACPI_HANDLE hdl, struct acpicpu_object *ao) 247 1.18.2.2 uebayasi { 248 1.18.2.2 uebayasi ACPI_OBJECT *obj; 249 1.18.2.2 uebayasi ACPI_BUFFER buf; 250 1.18.2.2 uebayasi ACPI_STATUS rv; 251 1.18.2.2 uebayasi 252 1.18.2.2 uebayasi rv = acpi_eval_struct(hdl, NULL, &buf); 253 1.18.2.2 uebayasi 254 1.18.2.2 uebayasi if (ACPI_FAILURE(rv)) 255 1.18.2.2 uebayasi return 1; 256 1.18.2.2 uebayasi 257 1.18.2.2 uebayasi obj = buf.Pointer; 258 1.18.2.2 uebayasi 259 1.18.2.2 uebayasi if (obj->Type != ACPI_TYPE_PROCESSOR) { 260 1.18.2.2 uebayasi rv = AE_TYPE; 261 1.18.2.2 uebayasi goto out; 262 1.18.2.2 uebayasi } 263 1.18.2.2 uebayasi 264 1.18.2.2 uebayasi if (obj->Processor.ProcId > (uint32_t)maxcpus) { 265 1.18.2.2 uebayasi rv = AE_LIMIT; 266 1.18.2.2 uebayasi goto out; 267 1.18.2.2 uebayasi } 268 1.18.2.2 uebayasi 269 1.18.2.2 uebayasi KDASSERT((uint64_t)obj->Processor.PblkAddress < UINT32_MAX); 270 1.18.2.2 uebayasi 271 1.18.2.2 uebayasi if (ao != NULL) { 272 1.18.2.2 uebayasi ao->ao_procid = obj->Processor.ProcId; 273 1.18.2.2 uebayasi ao->ao_pblklen = obj->Processor.PblkLength; 274 1.18.2.2 uebayasi ao->ao_pblkaddr = obj->Processor.PblkAddress; 275 1.18.2.2 uebayasi } 276 1.18.2.2 uebayasi 277 1.18.2.2 uebayasi out: 278 1.18.2.2 uebayasi if (buf.Pointer != NULL) 279 1.18.2.2 uebayasi ACPI_FREE(buf.Pointer); 280 1.18.2.2 uebayasi 281 1.18.2.2 uebayasi return ACPI_FAILURE(rv) ? 1 : 0; 282 1.18.2.2 uebayasi } 283 1.18.2.2 uebayasi 284 1.18.2.2 uebayasi static cpuid_t 285 1.18.2.2 uebayasi acpicpu_id(uint32_t id) 286 1.18.2.2 uebayasi { 287 1.18.2.2 uebayasi CPU_INFO_ITERATOR cii; 288 1.18.2.2 uebayasi struct cpu_info *ci; 289 1.18.2.2 uebayasi 290 1.18.2.2 uebayasi for (CPU_INFO_FOREACH(cii, ci)) { 291 1.18.2.2 uebayasi 292 1.18.2.2 uebayasi if (id == ci->ci_acpiid) 293 1.18.2.2 uebayasi return id; 294 1.18.2.2 uebayasi } 295 1.18.2.2 uebayasi 296 1.18.2.2 uebayasi return 0xFFFFFF; 297 1.18.2.2 uebayasi } 298 1.18.2.2 uebayasi 299 1.18.2.2 uebayasi static uint32_t 300 1.18.2.2 uebayasi acpicpu_cap(struct acpicpu_softc *sc) 301 1.18.2.2 uebayasi { 302 1.18.2.2 uebayasi uint32_t cap[3] = { 0 }; 303 1.18.2.2 uebayasi ACPI_STATUS rv; 304 1.18.2.2 uebayasi int err; 305 1.18.2.2 uebayasi 306 1.18.2.2 uebayasi /* 307 1.18.2.2 uebayasi * Set machine-dependent processor capabilities. 308 1.18.2.2 uebayasi * 309 1.18.2.2 uebayasi * The _PDC was deprecated in ACPI 3.0 in favor of the _OSC, 310 1.18.2.2 uebayasi * but firmware may expect that we evaluate it nevertheless. 311 1.18.2.2 uebayasi */ 312 1.18.2.2 uebayasi rv = acpicpu_cap_pdc(sc->sc_node->ad_handle); 313 1.18.2.2 uebayasi 314 1.18.2.2 uebayasi if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) 315 1.18.2.2 uebayasi aprint_error_dev(sc->sc_dev, "failed to evaluate _PDC: " 316 1.18.2.2 uebayasi "%s\n", AcpiFormatException(rv)); 317 1.18.2.2 uebayasi 318 1.18.2.2 uebayasi rv = acpicpu_cap_osc(sc->sc_node->ad_handle, cap); 319 1.18.2.2 uebayasi 320 1.18.2.2 uebayasi if (ACPI_FAILURE(rv) && rv != AE_NOT_FOUND) 321 1.18.2.2 uebayasi aprint_error_dev(sc->sc_dev, "failed to evaluate _OSC: " 322 1.18.2.2 uebayasi "%s\n", AcpiFormatException(rv)); 323 1.18.2.2 uebayasi 324 1.18.2.2 uebayasi if (ACPI_SUCCESS(rv)) { 325 1.18.2.2 uebayasi 326 1.18.2.2 uebayasi err = cap[0] & ~__BIT(0); 327 1.18.2.2 uebayasi 328 1.18.2.2 uebayasi if (err != 0) { 329 1.18.2.2 uebayasi aprint_error_dev(sc->sc_dev, "errors in " 330 1.18.2.2 uebayasi "_OSC: %s\n", acpicpu_cap_oscerr(err)); 331 1.18.2.2 uebayasi cap[2] = 0; 332 1.18.2.2 uebayasi } 333 1.18.2.2 uebayasi } 334 1.18.2.2 uebayasi 335 1.18.2.2 uebayasi return cap[2]; 336 1.18.2.2 uebayasi } 337 1.18.2.2 uebayasi 338 1.18.2.2 uebayasi static ACPI_OBJECT * 339 1.18.2.2 uebayasi acpicpu_cap_init(void) 340 1.18.2.2 uebayasi { 341 1.18.2.2 uebayasi static uint32_t cap[3]; 342 1.18.2.2 uebayasi static ACPI_OBJECT obj; 343 1.18.2.2 uebayasi 344 1.18.2.2 uebayasi cap[0] = ACPICPU_PDC_REVID; 345 1.18.2.2 uebayasi cap[1] = 1; 346 1.18.2.2 uebayasi cap[2] = acpicpu_md_cap(); 347 1.18.2.2 uebayasi 348 1.18.2.2 uebayasi obj.Type = ACPI_TYPE_BUFFER; 349 1.18.2.2 uebayasi obj.Buffer.Length = sizeof(cap); 350 1.18.2.2 uebayasi obj.Buffer.Pointer = (uint8_t *)cap; 351 1.18.2.2 uebayasi 352 1.18.2.2 uebayasi return &obj; 353 1.18.2.2 uebayasi } 354 1.18.2.2 uebayasi 355 1.18.2.2 uebayasi static ACPI_STATUS 356 1.18.2.2 uebayasi acpicpu_cap_pdc(ACPI_HANDLE hdl) 357 1.18.2.2 uebayasi { 358 1.18.2.2 uebayasi ACPI_OBJECT_LIST arg_list; 359 1.18.2.2 uebayasi 360 1.18.2.2 uebayasi arg_list.Count = 1; 361 1.18.2.2 uebayasi arg_list.Pointer = acpicpu_cap_init(); 362 1.18.2.2 uebayasi 363 1.18.2.2 uebayasi return AcpiEvaluateObject(hdl, "_PDC", &arg_list, NULL); 364 1.18.2.2 uebayasi } 365 1.18.2.2 uebayasi 366 1.18.2.2 uebayasi static ACPI_STATUS 367 1.18.2.2 uebayasi acpicpu_cap_osc(ACPI_HANDLE hdl, uint32_t *val) 368 1.18.2.2 uebayasi { 369 1.18.2.2 uebayasi ACPI_OBJECT_LIST arg_list; 370 1.18.2.2 uebayasi ACPI_OBJECT *cap, *obj; 371 1.18.2.2 uebayasi ACPI_OBJECT arg[4]; 372 1.18.2.2 uebayasi ACPI_BUFFER buf; 373 1.18.2.2 uebayasi ACPI_STATUS rv; 374 1.18.2.2 uebayasi 375 1.18.2.2 uebayasi /* Intel. */ 376 1.18.2.2 uebayasi static uint8_t cpu_oscuuid[16] = { 377 1.18.2.2 uebayasi 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47, 378 1.18.2.2 uebayasi 0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53 379 1.18.2.2 uebayasi }; 380 1.18.2.2 uebayasi 381 1.18.2.2 uebayasi cap = acpicpu_cap_init(); 382 1.18.2.2 uebayasi 383 1.18.2.2 uebayasi arg_list.Count = 4; 384 1.18.2.2 uebayasi arg_list.Pointer = arg; 385 1.18.2.2 uebayasi 386 1.18.2.2 uebayasi arg[0].Type = ACPI_TYPE_BUFFER; 387 1.18.2.2 uebayasi arg[0].Buffer.Length = sizeof(cpu_oscuuid); 388 1.18.2.2 uebayasi arg[0].Buffer.Pointer = cpu_oscuuid; 389 1.18.2.2 uebayasi 390 1.18.2.2 uebayasi arg[1].Type = ACPI_TYPE_INTEGER; 391 1.18.2.2 uebayasi arg[1].Integer.Value = ACPICPU_PDC_REVID; 392 1.18.2.2 uebayasi 393 1.18.2.2 uebayasi arg[2].Type = ACPI_TYPE_INTEGER; 394 1.18.2.2 uebayasi arg[2].Integer.Value = cap->Buffer.Length / sizeof(uint32_t); 395 1.18.2.2 uebayasi 396 1.18.2.2 uebayasi arg[3] = *cap; 397 1.18.2.2 uebayasi 398 1.18.2.2 uebayasi buf.Pointer = NULL; 399 1.18.2.2 uebayasi buf.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 400 1.18.2.2 uebayasi 401 1.18.2.2 uebayasi rv = AcpiEvaluateObject(hdl, "_OSC", &arg_list, &buf); 402 1.18.2.2 uebayasi 403 1.18.2.2 uebayasi if (ACPI_FAILURE(rv)) 404 1.18.2.2 uebayasi return rv; 405 1.18.2.2 uebayasi 406 1.18.2.2 uebayasi obj = buf.Pointer; 407 1.18.2.2 uebayasi 408 1.18.2.2 uebayasi if (obj->Type != ACPI_TYPE_BUFFER) { 409 1.18.2.2 uebayasi rv = AE_TYPE; 410 1.18.2.2 uebayasi goto out; 411 1.18.2.2 uebayasi } 412 1.18.2.2 uebayasi 413 1.18.2.2 uebayasi if (obj->Buffer.Length != cap->Buffer.Length) { 414 1.18.2.2 uebayasi rv = AE_BUFFER_OVERFLOW; 415 1.18.2.2 uebayasi goto out; 416 1.18.2.2 uebayasi } 417 1.18.2.2 uebayasi 418 1.18.2.2 uebayasi (void)memcpy(val, obj->Buffer.Pointer, obj->Buffer.Length); 419 1.18.2.2 uebayasi 420 1.18.2.2 uebayasi out: 421 1.18.2.2 uebayasi if (buf.Pointer != NULL) 422 1.18.2.2 uebayasi ACPI_FREE(buf.Pointer); 423 1.18.2.2 uebayasi 424 1.18.2.2 uebayasi return rv; 425 1.18.2.2 uebayasi } 426 1.18.2.2 uebayasi 427 1.18.2.2 uebayasi static const char * 428 1.18.2.2 uebayasi acpicpu_cap_oscerr(uint32_t err) 429 1.18.2.2 uebayasi { 430 1.18.2.2 uebayasi 431 1.18.2.2 uebayasi KASSERT((err & __BIT(0)) == 0); 432 1.18.2.2 uebayasi 433 1.18.2.2 uebayasi if ((err & __BIT(1)) != 0) 434 1.18.2.2 uebayasi return "_OSC failure"; 435 1.18.2.2 uebayasi 436 1.18.2.2 uebayasi if ((err & __BIT(2)) != 0) 437 1.18.2.2 uebayasi return "unrecognized UUID"; 438 1.18.2.2 uebayasi 439 1.18.2.2 uebayasi if ((err & __BIT(3)) != 0) 440 1.18.2.2 uebayasi return "unrecognized revision"; 441 1.18.2.2 uebayasi 442 1.18.2.2 uebayasi if ((err & __BIT(4)) != 0) 443 1.18.2.2 uebayasi return "capabilities masked"; 444 1.18.2.2 uebayasi 445 1.18.2.2 uebayasi return "unknown error"; 446 1.18.2.2 uebayasi } 447 1.18.2.2 uebayasi 448 1.18.2.2 uebayasi static void 449 1.18.2.2 uebayasi acpicpu_notify(ACPI_HANDLE hdl, uint32_t evt, void *aux) 450 1.18.2.2 uebayasi { 451 1.18.2.2 uebayasi ACPI_OSD_EXEC_CALLBACK func; 452 1.18.2.2 uebayasi struct acpicpu_softc *sc; 453 1.18.2.2 uebayasi device_t self = aux; 454 1.18.2.2 uebayasi 455 1.18.2.2 uebayasi sc = device_private(self); 456 1.18.2.2 uebayasi 457 1.18.2.2 uebayasi if (sc->sc_cold != false) 458 1.18.2.2 uebayasi return; 459 1.18.2.2 uebayasi 460 1.18.2.2 uebayasi switch (evt) { 461 1.18.2.2 uebayasi 462 1.18.2.2 uebayasi case ACPICPU_C_NOTIFY: 463 1.18.2.2 uebayasi 464 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_C) == 0) 465 1.18.2.2 uebayasi return; 466 1.18.2.2 uebayasi 467 1.18.2.2 uebayasi func = acpicpu_cstate_callback; 468 1.18.2.2 uebayasi break; 469 1.18.2.2 uebayasi 470 1.18.2.2 uebayasi case ACPICPU_P_NOTIFY: 471 1.18.2.2 uebayasi 472 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_P) == 0) 473 1.18.2.2 uebayasi return; 474 1.18.2.2 uebayasi 475 1.18.2.2 uebayasi func = acpicpu_pstate_callback; 476 1.18.2.2 uebayasi break; 477 1.18.2.2 uebayasi 478 1.18.2.2 uebayasi case ACPICPU_T_NOTIFY: 479 1.18.2.2 uebayasi 480 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_T) == 0) 481 1.18.2.2 uebayasi return; 482 1.18.2.2 uebayasi 483 1.18.2.2 uebayasi func = acpicpu_tstate_callback; 484 1.18.2.2 uebayasi break; 485 1.18.2.2 uebayasi 486 1.18.2.2 uebayasi default: 487 1.18.2.2 uebayasi aprint_error_dev(sc->sc_dev, "unknown notify: 0x%02X\n", evt); 488 1.18.2.2 uebayasi return; 489 1.18.2.2 uebayasi } 490 1.18.2.2 uebayasi 491 1.18.2.2 uebayasi (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, func, sc->sc_dev); 492 1.18.2.2 uebayasi } 493 1.18.2.2 uebayasi 494 1.18.2.2 uebayasi static bool 495 1.18.2.2 uebayasi acpicpu_suspend(device_t self, const pmf_qual_t *qual) 496 1.18.2.2 uebayasi { 497 1.18.2.2 uebayasi struct acpicpu_softc *sc = device_private(self); 498 1.18.2.2 uebayasi 499 1.18.2.2 uebayasi sc->sc_cold = true; 500 1.18.2.2 uebayasi 501 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 502 1.18.2.2 uebayasi (void)acpicpu_cstate_suspend(self); 503 1.18.2.2 uebayasi 504 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 505 1.18.2.2 uebayasi (void)acpicpu_pstate_suspend(self); 506 1.18.2.2 uebayasi 507 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 508 1.18.2.2 uebayasi (void)acpicpu_tstate_suspend(self); 509 1.18.2.2 uebayasi 510 1.18.2.2 uebayasi return true; 511 1.18.2.2 uebayasi } 512 1.18.2.2 uebayasi 513 1.18.2.2 uebayasi static bool 514 1.18.2.2 uebayasi acpicpu_resume(device_t self, const pmf_qual_t *qual) 515 1.18.2.2 uebayasi { 516 1.18.2.2 uebayasi struct acpicpu_softc *sc = device_private(self); 517 1.18.2.2 uebayasi 518 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_C) != 0) 519 1.18.2.2 uebayasi (void)acpicpu_cstate_resume(self); 520 1.18.2.2 uebayasi 521 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_P) != 0) 522 1.18.2.2 uebayasi (void)acpicpu_pstate_resume(self); 523 1.18.2.2 uebayasi 524 1.18.2.2 uebayasi if ((sc->sc_flags & ACPICPU_FLAG_T) != 0) 525 1.18.2.2 uebayasi (void)acpicpu_tstate_resume(self); 526 1.18.2.2 uebayasi 527 1.18.2.2 uebayasi sc->sc_cold = false; 528 1.18.2.2 uebayasi 529 1.18.2.2 uebayasi return true; 530 1.18.2.2 uebayasi } 531 1.18.2.2 uebayasi 532 1.18.2.2 uebayasi #ifdef _MODULE 533 1.18.2.2 uebayasi 534 1.18.2.2 uebayasi MODULE(MODULE_CLASS_DRIVER, acpicpu, NULL); 535 1.18.2.2 uebayasi CFDRIVER_DECL(acpicpu, DV_DULL, NULL); 536 1.18.2.2 uebayasi 537 1.18.2.2 uebayasi static int acpicpuloc[] = { -1 }; 538 1.18.2.2 uebayasi extern struct cfattach acpicpu_ca; 539 1.18.2.2 uebayasi 540 1.18.2.2 uebayasi static struct cfparent acpiparent = { 541 1.18.2.2 uebayasi "acpinodebus", NULL, DVUNIT_ANY 542 1.18.2.2 uebayasi }; 543 1.18.2.2 uebayasi 544 1.18.2.2 uebayasi static struct cfdata acpicpu_cfdata[] = { 545 1.18.2.2 uebayasi { 546 1.18.2.2 uebayasi .cf_name = "acpicpu", 547 1.18.2.2 uebayasi .cf_atname = "acpicpu", 548 1.18.2.2 uebayasi .cf_unit = 0, 549 1.18.2.2 uebayasi .cf_fstate = FSTATE_STAR, 550 1.18.2.2 uebayasi .cf_loc = acpicpuloc, 551 1.18.2.2 uebayasi .cf_flags = 0, 552 1.18.2.2 uebayasi .cf_pspec = &acpiparent, 553 1.18.2.2 uebayasi }, 554 1.18.2.2 uebayasi 555 1.18.2.2 uebayasi { NULL, NULL, 0, 0, NULL, 0, NULL } 556 1.18.2.2 uebayasi }; 557 1.18.2.2 uebayasi 558 1.18.2.2 uebayasi static int 559 1.18.2.2 uebayasi acpicpu_modcmd(modcmd_t cmd, void *context) 560 1.18.2.2 uebayasi { 561 1.18.2.2 uebayasi int err; 562 1.18.2.2 uebayasi 563 1.18.2.2 uebayasi switch (cmd) { 564 1.18.2.2 uebayasi 565 1.18.2.2 uebayasi case MODULE_CMD_INIT: 566 1.18.2.2 uebayasi 567 1.18.2.2 uebayasi err = config_cfdriver_attach(&acpicpu_cd); 568 1.18.2.2 uebayasi 569 1.18.2.2 uebayasi if (err != 0) 570 1.18.2.2 uebayasi return err; 571 1.18.2.2 uebayasi 572 1.18.2.2 uebayasi err = config_cfattach_attach("acpicpu", &acpicpu_ca); 573 1.18.2.2 uebayasi 574 1.18.2.2 uebayasi if (err != 0) { 575 1.18.2.2 uebayasi config_cfdriver_detach(&acpicpu_cd); 576 1.18.2.2 uebayasi return err; 577 1.18.2.2 uebayasi } 578 1.18.2.2 uebayasi 579 1.18.2.2 uebayasi err = config_cfdata_attach(acpicpu_cfdata, 1); 580 1.18.2.2 uebayasi 581 1.18.2.2 uebayasi if (err != 0) { 582 1.18.2.2 uebayasi config_cfattach_detach("acpicpu", &acpicpu_ca); 583 1.18.2.2 uebayasi config_cfdriver_detach(&acpicpu_cd); 584 1.18.2.2 uebayasi return err; 585 1.18.2.2 uebayasi } 586 1.18.2.2 uebayasi 587 1.18.2.2 uebayasi return 0; 588 1.18.2.2 uebayasi 589 1.18.2.2 uebayasi case MODULE_CMD_FINI: 590 1.18.2.2 uebayasi 591 1.18.2.2 uebayasi err = config_cfdata_detach(acpicpu_cfdata); 592 1.18.2.2 uebayasi 593 1.18.2.2 uebayasi if (err != 0) 594 1.18.2.2 uebayasi return err; 595 1.18.2.2 uebayasi 596 1.18.2.2 uebayasi config_cfattach_detach("acpicpu", &acpicpu_ca); 597 1.18.2.2 uebayasi config_cfdriver_detach(&acpicpu_cd); 598 1.18.2.2 uebayasi 599 1.18.2.2 uebayasi return 0; 600 1.18.2.2 uebayasi 601 1.18.2.2 uebayasi default: 602 1.18.2.2 uebayasi return ENOTTY; 603 1.18.2.2 uebayasi } 604 1.18.2.2 uebayasi } 605 1.18.2.2 uebayasi 606 1.18.2.2 uebayasi #endif /* _MODULE */ 607
Indexes created Wed Oct 01 19:09:53 GMT 2025