wbsio.c revision 1.13
1 /* $NetBSD: wbsio.c,v 1.13 2017/08/09 04:45:38 msaitoh Exp $ */ 2 /* $OpenBSD: wbsio.c,v 1.10 2015/03/14 03:38:47 jsg Exp $ */ 3 /* 4 * Copyright (c) 2008 Mark Kettenis <kettenis (at) openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 /* 20 * Winbond LPC Super I/O driver. 21 */ 22 23 #include <sys/param.h> 24 #include <sys/device.h> 25 #include <sys/kernel.h> 26 #include <sys/module.h> 27 #include <sys/systm.h> 28 29 #include <sys/bus.h> 30 31 #include <dev/isa/isareg.h> 32 #include <dev/isa/isavar.h> 33 #include <dev/isa/wbsioreg.h> 34 35 struct wbsio_softc { 36 device_t sc_dev; 37 device_t sc_lm_dev; 38 39 bus_space_tag_t sc_iot; 40 bus_space_handle_t sc_ioh; 41 42 struct isa_attach_args sc_ia; 43 struct isa_io sc_io; 44 }; 45 46 static int wbsio_probe(device_t, cfdata_t, void *); 47 static void wbsio_attach(device_t, device_t, void *); 48 static int wbsio_detach(device_t, int); 49 static int wbsio_rescan(device_t, const char *, const int *); 50 static void wbsio_childdet(device_t, device_t); 51 static int wbsio_print(void *, const char *); 52 static int wbsio_search(device_t, cfdata_t, const int *, void *); 53 54 CFATTACH_DECL2_NEW(wbsio, sizeof(struct wbsio_softc), 55 wbsio_probe, wbsio_attach, wbsio_detach, NULL, 56 wbsio_rescan, wbsio_childdet); 57 58 static __inline void 59 wbsio_conf_enable(bus_space_tag_t iot, bus_space_handle_t ioh) 60 { 61 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC); 62 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC); 63 } 64 65 static __inline void 66 wbsio_conf_disable(bus_space_tag_t iot, bus_space_handle_t ioh) 67 { 68 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_DS_MAGIC); 69 } 70 71 static __inline uint8_t 72 wbsio_conf_read(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t index) 73 { 74 bus_space_write_1(iot, ioh, WBSIO_INDEX, index); 75 return (bus_space_read_1(iot, ioh, WBSIO_DATA)); 76 } 77 78 static __inline void 79 wbsio_conf_write(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t index, 80 uint8_t data) 81 { 82 bus_space_write_1(iot, ioh, WBSIO_INDEX, index); 83 bus_space_write_1(iot, ioh, WBSIO_DATA, data); 84 } 85 86 int 87 wbsio_probe(device_t parent, cfdata_t match, void *aux) 88 { 89 struct isa_attach_args *ia = aux; 90 bus_space_tag_t iot; 91 bus_space_handle_t ioh; 92 uint8_t reg; 93 94 /* Must supply an address */ 95 if (ia->ia_nio < 1) 96 return 0; 97 98 if (ISA_DIRECT_CONFIG(ia)) 99 return 0; 100 101 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 102 return 0; 103 104 /* Match by device ID */ 105 iot = ia->ia_iot; 106 if (bus_space_map(iot, ia->ia_io[0].ir_addr, WBSIO_IOSIZE, 0, &ioh)) 107 return 0; 108 wbsio_conf_enable(iot, ioh); 109 reg = wbsio_conf_read(iot, ioh, WBSIO_ID); 110 aprint_debug("wbsio_probe: id 0x%02x\n", reg); 111 wbsio_conf_disable(iot, ioh); 112 bus_space_unmap(iot, ioh, WBSIO_IOSIZE); 113 switch (reg) { 114 case WBSIO_ID_W83627HF: 115 case WBSIO_ID_W83627DHG: 116 case WBSIO_ID_W83627DHGP: 117 case WBSIO_ID_W83627EHF: 118 case WBSIO_ID_W83627SF: 119 case WBSIO_ID_W83627THF: 120 case WBSIO_ID_W83627UHG: 121 case WBSIO_ID_W83637HF: 122 case WBSIO_ID_W83667HG: 123 case WBSIO_ID_W83667HGB: 124 case WBSIO_ID_W83687THF: 125 case WBSIO_ID_W83697HF: 126 case WBSIO_ID_W83697UG: 127 case WBSIO_ID_NCT5104D: 128 case WBSIO_ID_NCT6775F: 129 case WBSIO_ID_NCT6776F: 130 case WBSIO_ID_NCT6779D: 131 case WBSIO_ID_NCT6791D: 132 case WBSIO_ID_NCT6792D: 133 ia->ia_nio = 1; 134 ia->ia_io[0].ir_size = WBSIO_IOSIZE; 135 ia->ia_niomem = 0; 136 ia->ia_nirq = 0; 137 ia->ia_ndrq = 0; 138 return 1; 139 } 140 141 return 0; 142 } 143 144 void 145 wbsio_attach(device_t parent, device_t self, void *aux) 146 { 147 struct wbsio_softc *sc = device_private(self); 148 struct isa_attach_args *ia = aux; 149 const char *desc = NULL; 150 const char *vendor = "Winbond"; 151 uint8_t reg; 152 153 sc->sc_dev = self; 154 155 sc->sc_ia = *ia; 156 157 /* Map ISA I/O space */ 158 sc->sc_iot = ia->ia_iot; 159 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 160 WBSIO_IOSIZE, 0, &sc->sc_ioh)) { 161 aprint_error(": can't map i/o space\n"); 162 return; 163 } 164 165 /* Enter configuration mode */ 166 wbsio_conf_enable(sc->sc_iot, sc->sc_ioh); 167 168 /* Read device ID */ 169 reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_ID); 170 switch (reg) { 171 case WBSIO_ID_W83627HF: 172 desc = "W83627HF"; 173 break; 174 case WBSIO_ID_W83627DHG: 175 desc = "W83627DHG"; 176 break; 177 case WBSIO_ID_W83627DHGP: 178 printf("W83627DHG-P"); 179 break; 180 case WBSIO_ID_W83627EHF: 181 desc = "W83627EHF"; 182 break; 183 case WBSIO_ID_W83627SF: 184 desc = "W83627SF"; 185 break; 186 case WBSIO_ID_W83627THF: 187 desc = "W83627THF"; 188 break; 189 case WBSIO_ID_W83627UHG: 190 printf("W83627UHG"); 191 break; 192 case WBSIO_ID_W83637HF: 193 desc = "W83637HF"; 194 break; 195 case WBSIO_ID_W83667HG: 196 desc = "W83667HG"; 197 break; 198 case WBSIO_ID_W83667HGB: 199 desc = "W83667HGB"; 200 break; 201 case WBSIO_ID_W83687THF: 202 desc = "W83687THF"; 203 break; 204 case WBSIO_ID_W83697HF: 205 desc = "W83697HF"; 206 break; 207 case WBSIO_ID_W83697UG: 208 desc = "W83697UG"; 209 break; 210 case WBSIO_ID_NCT5104D: 211 vendor = "Nuvoton"; 212 printf("NCT5104D"); 213 break; 214 case WBSIO_ID_NCT6775F: 215 vendor = "Nuvoton"; 216 desc = "NCT6775F"; 217 break; 218 case WBSIO_ID_NCT6776F: 219 vendor = "Nuvoton"; 220 desc = "NCT6776F"; 221 break; 222 case WBSIO_ID_NCT6779D: 223 vendor = "Nuvoton"; 224 desc = "NCT6779D"; 225 break; 226 case WBSIO_ID_NCT6791D: 227 vendor = "Nuvoton"; 228 desc = "NCT6791D"; 229 break; 230 case WBSIO_ID_NCT6792D: 231 vendor = "Nuvoton"; 232 desc = "NCT6792D"; 233 break; 234 case WBSIO_ID_NCT6793D: 235 vendor = "Nuvoton"; 236 desc = "NCT6793D"; 237 break; 238 case WBSIO_ID_NCT6795D: 239 vendor = "Nuvoton"; 240 desc = "NCT6795D"; 241 break; 242 } 243 /* Read device revision */ 244 reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_REV); 245 246 aprint_naive("\n"); 247 aprint_normal(": %s LPC Super I/O %s rev 0x%02x\n", vendor, desc, reg); 248 249 /* Escape from configuration mode */ 250 wbsio_conf_disable(sc->sc_iot, sc->sc_ioh); 251 252 if (!pmf_device_register(self, NULL, NULL)) 253 aprint_error_dev(self, "couldn't establish power handler\n"); 254 wbsio_rescan(self, "wbsio", NULL); 255 } 256 257 int 258 wbsio_detach(device_t self, int flags) 259 { 260 struct wbsio_softc *sc = device_private(self); 261 int rc; 262 263 if ((rc = config_detach_children(self, flags)) != 0) 264 return rc; 265 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WBSIO_IOSIZE); 266 pmf_device_deregister(self); 267 return 0; 268 } 269 270 int 271 wbsio_rescan(device_t self, const char *ifattr, const int *locators) 272 { 273 274 config_search_loc(wbsio_search, self, ifattr, locators, NULL); 275 276 return 0; 277 } 278 279 void 280 wbsio_childdet(device_t self, device_t child) 281 { 282 struct wbsio_softc *sc = device_private(self); 283 284 if (sc->sc_lm_dev == child) 285 sc->sc_lm_dev = NULL; 286 } 287 288 static int 289 wbsio_search(device_t parent, cfdata_t cf, const int *slocs, void *aux) 290 { 291 struct wbsio_softc *sc = device_private(parent); 292 uint16_t iobase; 293 uint8_t reg0, reg1, devid; 294 295 /* Enter configuration mode */ 296 wbsio_conf_enable(sc->sc_iot, sc->sc_ioh); 297 298 /* Select HM logical device */ 299 wbsio_conf_write(sc->sc_iot, sc->sc_ioh, WBSIO_LDN, WBSIO_LDN_HM); 300 301 /* 302 * The address should be 8-byte aligned, but it seems some 303 * BIOSes ignore this. They get away with it, because 304 * Apparently the hardware simply ignores the lower three 305 * bits. We do the same here. 306 */ 307 reg0 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_LSB); 308 reg1 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_MSB); 309 310 /* Escape from configuration mode */ 311 wbsio_conf_disable(sc->sc_iot, sc->sc_ioh); 312 313 iobase = (reg1 << 8) | (reg0 & ~0x7); 314 315 if (iobase == 0) 316 return -1; 317 318 /* Enter configuration mode */ 319 wbsio_conf_enable(sc->sc_iot, sc->sc_ioh); 320 /* Read device ID */ 321 devid = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_ID); 322 /* Escape from configuration mode */ 323 wbsio_conf_disable(sc->sc_iot, sc->sc_ioh); 324 325 sc->sc_ia.ia_nio = 1; 326 sc->sc_ia.ia_io = &sc->sc_io; 327 sc->sc_ia.ia_io[0].ir_addr = iobase; 328 sc->sc_ia.ia_io[0].ir_size = 8; 329 sc->sc_ia.ia_niomem = 0; 330 sc->sc_ia.ia_nirq = 0; 331 sc->sc_ia.ia_ndrq = 0; 332 /* Store device-id to ia_aux */ 333 sc->sc_ia.ia_aux = (void *)(uintptr_t)devid; 334 sc->sc_lm_dev = config_attach(parent, cf, &sc->sc_ia, wbsio_print); 335 336 return 0; 337 } 338 339 int 340 wbsio_print(void *aux, const char *pnp) 341 { 342 struct isa_attach_args *ia = aux; 343 344 if (pnp) 345 aprint_normal("%s", pnp); 346 if (ia->ia_io[0].ir_size) 347 aprint_normal(" port 0x%x", ia->ia_io[0].ir_addr); 348 if (ia->ia_io[0].ir_size > 1) 349 aprint_normal("-0x%x", ia->ia_io[0].ir_addr + 350 ia->ia_io[0].ir_size - 1); 351 return (UNCONF); 352 } 353 354 MODULE(MODULE_CLASS_DRIVER, wbsio, NULL); 355 356 #ifdef _MODULE 357 #include "ioconf.c" 358 #endif 359 360 static int 361 wbsio_modcmd(modcmd_t cmd, void *opaque) 362 { 363 switch (cmd) { 364 case MODULE_CMD_INIT: 365 #ifdef _MODULE 366 return config_init_component(cfdriver_ioconf_wbsio, 367 cfattach_ioconf_wbsio, cfdata_ioconf_wbsio); 368 #else 369 return 0; 370 #endif 371 case MODULE_CMD_FINI: 372 #ifdef _MODULE 373 return config_fini_component(cfdriver_ioconf_wbsio, 374 cfattach_ioconf_wbsio, cfdata_ioconf_wbsio); 375 #else 376 return 0; 377 #endif 378 default: 379 return ENOTTY; 380 } 381 } 382
Indexes created Wed Oct 01 07:09:59 GMT 2025