1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/isa/atkbdc_isa.c,v 1.14.2.1 2000/03/31 12:52:05 yokota Exp $ 27 * $DragonFly: src/sys/dev/misc/atkbdc_layer/atkbdc_isa.c,v 1.10 2007/10/23 03:04:49 y0netan1 Exp $ 28 */ 29 30 #include "opt_kbd.h" 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/malloc.h> 37 #include <sys/rman.h> 38 39 #include <dev/misc/kbd/atkbdcreg.h> 40 41 #include <bus/isa/isareg.h> 42 #include <bus/isa/isavar.h> 43 44 MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device"); 45 46 /* children */ 47 typedef struct atkbdc_device { 48 int flags; /* configuration flags */ 49 int irq; /* ISA IRQ mask */ 50 u_int32_t vendorid; 51 u_int32_t serial; 52 u_int32_t logicalid; 53 u_int32_t compatid; 54 } atkbdc_device_t; 55 56 /* kbdc */ 57 devclass_t atkbdc_devclass; 58 59 static int atkbdc_probe(device_t dev); 60 static int atkbdc_attach(device_t dev); 61 static int atkbdc_print_child(device_t bus, device_t dev); 62 static int atkbdc_read_ivar(device_t bus, device_t dev, int index, 63 u_long *val); 64 static int atkbdc_write_ivar(device_t bus, device_t dev, int index, 65 u_long val); 66 67 static device_method_t atkbdc_methods[] = { 68 DEVMETHOD(device_probe, atkbdc_probe), 69 DEVMETHOD(device_attach, atkbdc_attach), 70 DEVMETHOD(device_suspend, bus_generic_suspend), 71 DEVMETHOD(device_resume, bus_generic_resume), 72 73 DEVMETHOD(bus_print_child, atkbdc_print_child), 74 DEVMETHOD(bus_read_ivar, atkbdc_read_ivar), 75 DEVMETHOD(bus_write_ivar, atkbdc_write_ivar), 76 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 77 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 78 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 79 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 80 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 81 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 82 83 { 0, 0 } 84 }; 85 86 static driver_t atkbdc_driver = { 87 ATKBDC_DRIVER_NAME, 88 atkbdc_methods, 89 sizeof(atkbdc_softc_t *), 90 }; 91 92 static struct isa_pnp_id atkbdc_ids[] = { 93 { 0x0303d041, "Keyboard controller (i8042)" }, /* PNP0303 */ 94 { 0 } 95 }; 96 97 static int 98 atkbdc_probe(device_t dev) 99 { 100 struct resource *port0; 101 struct resource *port1; 102 int error; 103 int rid; 104 #if defined(__i386__) 105 bus_space_tag_t tag; 106 bus_space_handle_t ioh1; 107 volatile int i; 108 #endif 109 110 /* check PnP IDs */ 111 if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO) 112 return ENXIO; 113 114 device_set_desc(dev, "Keyboard controller (i8042)"); 115 116 rid = 0; 117 port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 118 RF_ACTIVE); 119 if (port0 == NULL) 120 return ENXIO; 121 /* XXX */ 122 if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) { 123 bus_set_resource(dev, SYS_RES_IOPORT, 1, 124 rman_get_start(port0) + KBD_STATUS_PORT, 1); 125 } 126 rid = 1; 127 port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 128 RF_ACTIVE); 129 if (port1 == NULL) { 130 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0); 131 return ENXIO; 132 } 133 134 #if defined(__i386__) 135 /* 136 * Check if we really have AT keyboard controller. Poll status 137 * register until we get "all clear" indication. If no such 138 * indication comes, it probably means that there is no AT 139 * keyboard controller present. Give up in such case. Check relies 140 * on the fact that reading from non-existing in/out port returns 141 * 0xff on i386. May or may not be true on other platforms. 142 */ 143 tag = rman_get_bustag(port0); 144 ioh1 = rman_get_bushandle(port1); 145 for (i = 65536; i != 0; --i) { 146 if ((bus_space_read_1(tag, ioh1, 0) & 0x2) == 0) 147 break; 148 DELAY(16); 149 } 150 if (i == 0) { 151 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0); 152 bus_release_resource(dev, SYS_RES_IOPORT, 1, port1); 153 return ENXIO; 154 } 155 #endif 156 157 error = atkbdc_probe_unit(device_get_unit(dev), port0, port1); 158 159 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0); 160 bus_release_resource(dev, SYS_RES_IOPORT, 1, port1); 161 162 return error; 163 } 164 165 static void 166 atkbdc_add_device(device_t dev, const char *name, int unit) 167 { 168 atkbdc_device_t *kdev; 169 device_t child; 170 int t; 171 172 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0) 173 return; 174 175 kdev = kmalloc(sizeof(struct atkbdc_device), M_ATKBDDEV, 176 M_WAITOK | M_ZERO); 177 178 if (resource_int_value(name, unit, "irq", &t) == 0) 179 kdev->irq = t; 180 else 181 kdev->irq = -1; 182 183 if (resource_int_value(name, unit, "flags", &t) == 0) 184 kdev->flags = t; 185 else 186 kdev->flags = 0; 187 188 child = device_add_child(dev, name, unit); 189 device_set_ivars(child, kdev); 190 } 191 192 static int 193 atkbdc_attach(device_t dev) 194 { 195 atkbdc_softc_t *sc; 196 int unit; 197 int error; 198 int rid; 199 int i; 200 201 unit = device_get_unit(dev); 202 sc = *(atkbdc_softc_t **)device_get_softc(dev); 203 if (sc == NULL) { 204 /* 205 * We have to maintain two copies of the kbdc_softc struct, 206 * as the low-level console needs to have access to the 207 * keyboard controller before kbdc is probed and attached. 208 * kbdc_soft[] contains the default entry for that purpose. 209 * See atkbdc.c. XXX 210 */ 211 sc = atkbdc_get_softc(unit); 212 if (sc == NULL) 213 return ENOMEM; 214 } 215 216 rid = 0; 217 sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 218 RF_ACTIVE); 219 if (sc->port0 == NULL) 220 return ENXIO; 221 rid = 1; 222 sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 223 RF_ACTIVE); 224 if (sc->port1 == NULL) { 225 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0); 226 return ENXIO; 227 } 228 229 error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1); 230 if (error) { 231 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0); 232 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1); 233 return error; 234 } 235 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 236 237 /* 238 * Add all devices configured to be attached to atkbdc0. 239 */ 240 for (i = resource_query_string(-1, "at", device_get_nameunit(dev)); 241 i != -1; 242 i = resource_query_string(i, "at", device_get_nameunit(dev))) { 243 atkbdc_add_device(dev, resource_query_name(i), 244 resource_query_unit(i)); 245 } 246 247 /* 248 * and atkbdc? 249 */ 250 for (i = resource_query_string(-1, "at", device_get_name(dev)); 251 i != -1; 252 i = resource_query_string(i, "at", device_get_name(dev))) { 253 atkbdc_add_device(dev, resource_query_name(i), 254 resource_query_unit(i)); 255 } 256 257 bus_generic_attach(dev); 258 259 return 0; 260 } 261 262 static int 263 atkbdc_print_child(device_t bus, device_t dev) 264 { 265 atkbdc_device_t *kbdcdev; 266 int retval = 0; 267 268 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 269 270 retval += bus_print_child_header(bus, dev); 271 if (kbdcdev->flags != 0) 272 retval += kprintf(" flags 0x%x", kbdcdev->flags); 273 if (kbdcdev->irq != -1) 274 retval += kprintf(" irq %d", kbdcdev->irq); 275 retval += bus_print_child_footer(bus, dev); 276 277 return (retval); 278 } 279 280 static int 281 atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val) 282 { 283 atkbdc_device_t *ivar; 284 285 ivar = (atkbdc_device_t *)device_get_ivars(dev); 286 switch (index) { 287 case KBDC_IVAR_IRQ: 288 *val = (u_long)ivar->irq; 289 break; 290 case KBDC_IVAR_FLAGS: 291 *val = (u_long)ivar->flags; 292 break; 293 case KBDC_IVAR_VENDORID: 294 *val = (u_long)ivar->vendorid; 295 break; 296 case KBDC_IVAR_SERIAL: 297 *val = (u_long)ivar->serial; 298 break; 299 case KBDC_IVAR_LOGICALID: 300 *val = (u_long)ivar->logicalid; 301 break; 302 case KBDC_IVAR_COMPATID: 303 *val = (u_long)ivar->compatid; 304 break; 305 default: 306 return ENOENT; 307 } 308 return 0; 309 } 310 311 static int 312 atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 313 { 314 atkbdc_device_t *ivar; 315 316 ivar = (atkbdc_device_t *)device_get_ivars(dev); 317 switch (index) { 318 case KBDC_IVAR_IRQ: 319 ivar->irq = (int)val; 320 break; 321 case KBDC_IVAR_FLAGS: 322 ivar->flags = (int)val; 323 break; 324 case KBDC_IVAR_VENDORID: 325 ivar->vendorid = (u_int32_t)val; 326 break; 327 case KBDC_IVAR_SERIAL: 328 ivar->serial = (u_int32_t)val; 329 break; 330 case KBDC_IVAR_LOGICALID: 331 ivar->logicalid = (u_int32_t)val; 332 break; 333 case KBDC_IVAR_COMPATID: 334 ivar->compatid = (u_int32_t)val; 335 break; 336 default: 337 return ENOENT; 338 } 339 return 0; 340 } 341 342 DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 343 DRIVER_MODULE(atkbdc, acpi, atkbdc_driver, atkbdc_devclass, 0, 0); 344