wbsio.c revision 1.8
1 /* $NetBSD: wbsio.c,v 1.8 2012/01/17 18:04:46 jakllsch Exp $ */ 2 /* $OpenBSD: wbsio.c,v 1.5 2009/03/29 21:53:52 sthen 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 34 /* ISA bus registers */ 35 #define WBSIO_INDEX 0x00 /* Configuration Index Register */ 36 #define WBSIO_DATA 0x01 /* Configuration Data Register */ 37 38 #define WBSIO_IOSIZE 0x02 /* ISA I/O space size */ 39 40 #define WBSIO_CONF_EN_MAGIC 0x87 /* enable configuration mode */ 41 #define WBSIO_CONF_DS_MAGIC 0xaa /* disable configuration mode */ 42 43 /* Configuration Space Registers */ 44 #define WBSIO_LDN 0x07 /* Logical Device Number */ 45 #define WBSIO_ID 0x20 /* Device ID */ 46 #define WBSIO_REV 0x21 /* Device Revision */ 47 48 #define WBSIO_ID_W83627HF 0x52 49 #define WBSIO_ID_W83627THF 0x82 50 #define WBSIO_ID_W83627EHF 0x88 51 #define WBSIO_ID_W83627DHG 0xa0 52 #define WBSIO_ID_W83627SF 0x59 53 #define WBSIO_ID_W83637HF 0x70 54 #define WBSIO_ID_W83667HG 0xa5 55 #define WBSIO_ID_W83697HF 0x60 56 57 /* Logical Device Number (LDN) Assignments */ 58 #define WBSIO_LDN_HM 0x0b 59 60 /* Hardware Monitor Control Registers (LDN B) */ 61 #define WBSIO_HM_ADDR_MSB 0x60 /* Address [15:8] */ 62 #define WBSIO_HM_ADDR_LSB 0x61 /* Address [7:0] */ 63 64 struct wbsio_softc { 65 struct device sc_dev; 66 67 bus_space_tag_t sc_iot; 68 bus_space_handle_t sc_ioh; 69 }; 70 71 int wbsio_probe(device_t, cfdata_t, void *); 72 void wbsio_attach(device_t, device_t, void *); 73 int wbsio_detach(device_t, int); 74 void wbsio_childdet(device_t, device_t); 75 int wbsio_print(void *, const char *); 76 77 CFATTACH_DECL2_NEW(wbsio, sizeof(struct wbsio_softc), 78 wbsio_probe, wbsio_attach, wbsio_detach, NULL, NULL, wbsio_childdet); 79 80 static __inline void 81 wbsio_conf_enable(bus_space_tag_t iot, bus_space_handle_t ioh) 82 { 83 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC); 84 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_EN_MAGIC); 85 } 86 87 static __inline void 88 wbsio_conf_disable(bus_space_tag_t iot, bus_space_handle_t ioh) 89 { 90 bus_space_write_1(iot, ioh, WBSIO_INDEX, WBSIO_CONF_DS_MAGIC); 91 } 92 93 static __inline u_int8_t 94 wbsio_conf_read(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index) 95 { 96 bus_space_write_1(iot, ioh, WBSIO_INDEX, index); 97 return (bus_space_read_1(iot, ioh, WBSIO_DATA)); 98 } 99 100 static __inline void 101 wbsio_conf_write(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t index, 102 u_int8_t data) 103 { 104 bus_space_write_1(iot, ioh, WBSIO_INDEX, index); 105 bus_space_write_1(iot, ioh, WBSIO_DATA, data); 106 } 107 108 int 109 wbsio_probe(device_t parent, cfdata_t match, void *aux) 110 { 111 struct isa_attach_args *ia = aux; 112 bus_space_tag_t iot; 113 bus_space_handle_t ioh; 114 u_int8_t reg; 115 116 /* Must supply an address */ 117 if (ia->ia_nio < 1) 118 return 0; 119 120 if (ISA_DIRECT_CONFIG(ia)) 121 return 0; 122 123 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 124 return 0; 125 126 /* Match by device ID */ 127 iot = ia->ia_iot; 128 if (bus_space_map(iot, ia->ia_io[0].ir_addr, WBSIO_IOSIZE, 0, &ioh)) 129 return 0; 130 wbsio_conf_enable(iot, ioh); 131 reg = wbsio_conf_read(iot, ioh, WBSIO_ID); 132 aprint_debug("wbsio_probe: id 0x%02x\n", reg); 133 wbsio_conf_disable(iot, ioh); 134 bus_space_unmap(iot, ioh, WBSIO_IOSIZE); 135 switch (reg) { 136 case WBSIO_ID_W83627HF: 137 case WBSIO_ID_W83627THF: 138 case WBSIO_ID_W83627EHF: 139 case WBSIO_ID_W83627DHG: 140 case WBSIO_ID_W83637HF: 141 case WBSIO_ID_W83697HF: 142 ia->ia_nio = 1; 143 ia->ia_io[0].ir_size = WBSIO_IOSIZE; 144 ia->ia_niomem = 0; 145 ia->ia_nirq = 0; 146 ia->ia_ndrq = 0; 147 return 1; 148 } 149 150 return 0; 151 } 152 153 void 154 wbsio_attach(device_t parent, device_t self, void *aux) 155 { 156 struct wbsio_softc *sc = device_private(self); 157 struct isa_attach_args *ia = aux; 158 struct isa_attach_args nia; 159 const char *desc = NULL; 160 u_int8_t reg, reg0, reg1; 161 u_int16_t iobase; 162 163 /* Map ISA I/O space */ 164 sc->sc_iot = ia->ia_iot; 165 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 166 WBSIO_IOSIZE, 0, &sc->sc_ioh)) { 167 aprint_error(": can't map i/o space\n"); 168 return; 169 } 170 171 /* Enter configuration mode */ 172 wbsio_conf_enable(sc->sc_iot, sc->sc_ioh); 173 174 /* Read device ID */ 175 reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_ID); 176 switch (reg) { 177 case WBSIO_ID_W83627HF: 178 desc = "W83627HF"; 179 break; 180 case WBSIO_ID_W83627THF: 181 desc = "W83627THF"; 182 break; 183 case WBSIO_ID_W83627EHF: 184 desc = "W83627EHF"; 185 break; 186 case WBSIO_ID_W83627DHG: 187 desc = "W83627DHG"; 188 break; 189 case WBSIO_ID_W83637HF: 190 desc = "W83637HF"; 191 break; 192 case WBSIO_ID_W83667HG: 193 desc = "W83667HG"; 194 break; 195 case WBSIO_ID_W83697HF: 196 desc = "W83697HF"; 197 break; 198 } 199 200 /* Read device revision */ 201 reg = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_REV); 202 203 aprint_naive("\n"); 204 aprint_normal(": Winbond LPC Super I/O %s rev 0x%02x\n", desc, reg); 205 206 /* Select HM logical device */ 207 wbsio_conf_write(sc->sc_iot, sc->sc_ioh, WBSIO_LDN, WBSIO_LDN_HM); 208 209 /* 210 * The address should be 8-byte aligned, but it seems some 211 * BIOSes ignore this. They get away with it, because 212 * Apparently the hardware simply ignores the lower three 213 * bits. We do the same here. 214 */ 215 reg0 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_LSB); 216 reg1 = wbsio_conf_read(sc->sc_iot, sc->sc_ioh, WBSIO_HM_ADDR_MSB); 217 iobase = (reg1 << 8) | (reg0 & ~0x7); 218 219 /* Escape from configuration mode */ 220 wbsio_conf_disable(sc->sc_iot, sc->sc_ioh); 221 222 if (!pmf_device_register(self, NULL, NULL)) 223 aprint_error_dev(self, "couldn't establish power handler\n"); 224 225 if (iobase == 0) 226 return; 227 228 nia = *ia; 229 nia.ia_io[0].ir_addr = iobase; 230 config_found(self, &nia, wbsio_print); 231 } 232 233 int 234 wbsio_detach(device_t self, int flags) 235 { 236 struct wbsio_softc *sc = device_private(self); 237 int rc; 238 239 if ((rc = config_detach_children(self, flags)) != 0) 240 return rc; 241 bus_space_unmap(sc->sc_iot, sc->sc_ioh, WBSIO_IOSIZE); 242 pmf_device_deregister(self); 243 return 0; 244 } 245 246 void 247 wbsio_childdet(device_t self, device_t child) 248 { 249 return; 250 } 251 252 int 253 wbsio_print(void *aux, const char *pnp) 254 { 255 struct isa_attach_args *ia = aux; 256 257 if (pnp) 258 aprint_normal("%s", pnp); 259 if (ia->ia_io[0].ir_size) 260 aprint_normal(" port 0x%x", ia->ia_io[0].ir_addr); 261 if (ia->ia_io[0].ir_size > 1) 262 aprint_normal("-0x%x", ia->ia_io[0].ir_addr + 263 ia->ia_io[0].ir_size - 1); 264 return (UNCONF); 265 } 266 267 MODULE(MODULE_CLASS_DRIVER, wbsio, NULL); 268 269 #ifdef _MODULE 270 #include "ioconf.c" 271 #endif 272 273 static int 274 wbsio_modcmd(modcmd_t cmd, void *opaque) 275 { 276 switch (cmd) { 277 case MODULE_CMD_INIT: 278 #ifdef _MODULE 279 return config_init_component(cfdriver_ioconf_wbsio, 280 cfattach_ioconf_wbsio, cfdata_ioconf_wbsio); 281 #else 282 return 0; 283 #endif 284 case MODULE_CMD_FINI: 285 #ifdef _MODULE 286 return config_fini_component(cfdriver_ioconf_wbsio, 287 cfattach_ioconf_wbsio, cfdata_ioconf_wbsio); 288 #else 289 return 0; 290 #endif 291 default: 292 return ENOTTY; 293 } 294 } 295
Indexes created Wed Oct 01 07:09:59 GMT 2025