sys/dev/misc/atkbdc_layer/atkbdc_isa.c

   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 1.9 2007/04/22 10:54:42 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);