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 1.6 2006/10/25 20:55:54 dillon 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
 105         /* check PnP IDs */
 106         if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
 107                 return ENXIO;
 108
 109         device_set_desc(dev, "Keyboard controller (i8042)");
 110
 111         rid = 0;
 112         port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
 113                                    RF_ACTIVE);
 114         if (port0 == NULL)
 115                 return ENXIO;
 116         /* XXX */
 117         if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) {
 118                 bus_set_resource(dev, SYS_RES_IOPORT, 1,
 119                                  rman_get_start(port0) + KBD_STATUS_PORT, 1);
 120         }
 121         rid = 1;
 122         port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
 123                                    RF_ACTIVE);
 124         if (port1 == NULL) {
 125                 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
 126                 return ENXIO;
 127         }
 128
 129         error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
 130
 131         bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
 132         bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
 133
 134         return error;
 135 }
 136
 137 static void
 138 atkbdc_add_device(device_t dev, const char *name, int unit)
 139 {
 140         atkbdc_device_t *kdev;
 141         device_t        child;
 142         int             t;
 143
 144         if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
 145                 return;
 146
 147         kdev = kmalloc(sizeof(struct atkbdc_device), M_ATKBDDEV,
 148                         M_WAITOK | M_ZERO);
 149
 150         if (resource_int_value(name, unit, "irq", &t) == 0)
 151                 kdev->irq = t;
 152         else
 153                 kdev->irq = -1;
 154
 155         if (resource_int_value(name, unit, "flags", &t) == 0)
 156                 kdev->flags = t;
 157         else
 158                 kdev->flags = 0;
 159
 160         child = device_add_child(dev, name, unit);
 161         device_set_ivars(child, kdev);
 162 }
 163
 164 static int
 165 atkbdc_attach(device_t dev)
 166 {
 167         atkbdc_softc_t  *sc;
 168         int             unit;
 169         int             error;
 170         int             rid;
 171         int             i;
 172
 173         unit = device_get_unit(dev);
 174         sc = *(atkbdc_softc_t **)device_get_softc(dev);
 175         if (sc == NULL) {
 176                 /*
 177                  * We have to maintain two copies of the kbdc_softc struct,
 178                  * as the low-level console needs to have access to the
 179                  * keyboard controller before kbdc is probed and attached.
 180                  * kbdc_soft[] contains the default entry for that purpose.
 181                  * See atkbdc.c. XXX
 182                  */
 183                 sc = atkbdc_get_softc(unit);
 184                 if (sc == NULL)
 185                         return ENOMEM;
 186         }
 187
 188         rid = 0;
 189         sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
 190                                        RF_ACTIVE);
 191         if (sc->port0 == NULL)
 192                 return ENXIO;
 193         rid = 1;
 194         sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
 195                                        RF_ACTIVE);
 196         if (sc->port1 == NULL) {
 197                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
 198                 return ENXIO;
 199         }
 200
 201         error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
 202         if (error) {
 203                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
 204                 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
 205                 return error;
 206         }
 207         *(atkbdc_softc_t **)device_get_softc(dev) = sc;
 208
 209         /*
 210          * Add all devices configured to be attached to atkbdc0.
 211          */
 212         for (i = resource_query_string(-1, "at", device_get_nameunit(dev));
 213              i != -1;
 214              i = resource_query_string(i, "at", device_get_nameunit(dev))) {
 215                 atkbdc_add_device(dev, resource_query_name(i),
 216                                   resource_query_unit(i));
 217         }
 218
 219         /*
 220          * and atkbdc?
 221          */
 222         for (i = resource_query_string(-1, "at", device_get_name(dev));
 223              i != -1;
 224              i = resource_query_string(i, "at", device_get_name(dev))) {
 225                 atkbdc_add_device(dev, resource_query_name(i),
 226                                   resource_query_unit(i));
 227         }
 228
 229         bus_generic_attach(dev);
 230
 231         return 0;
 232 }
 233
 234 static int
 235 atkbdc_print_child(device_t bus, device_t dev)
 236 {
 237         atkbdc_device_t *kbdcdev;
 238         int retval = 0;
 239
 240         kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
 241
 242         retval += bus_print_child_header(bus, dev);
 243         if (kbdcdev->flags != 0)
 244                 retval += printf(" flags 0x%x", kbdcdev->flags);
 245         if (kbdcdev->irq != -1)
 246                 retval += printf(" irq %d", kbdcdev->irq);
 247         retval += bus_print_child_footer(bus, dev);
 248
 249         return (retval);
 250 }
 251
 252 static int
 253 atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
 254 {
 255         atkbdc_device_t *ivar;
 256
 257         ivar = (atkbdc_device_t *)device_get_ivars(dev);
 258         switch (index) {
 259         case KBDC_IVAR_IRQ:
 260                 *val = (u_long)ivar->irq;
 261                 break;
 262         case KBDC_IVAR_FLAGS:
 263                 *val = (u_long)ivar->flags;
 264                 break;
 265         case KBDC_IVAR_VENDORID:
 266                 *val = (u_long)ivar->vendorid;
 267                 break;
 268         case KBDC_IVAR_SERIAL:
 269                 *val = (u_long)ivar->serial;
 270                 break;
 271         case KBDC_IVAR_LOGICALID:
 272                 *val = (u_long)ivar->logicalid;
 273                 break;
 274         case KBDC_IVAR_COMPATID:
 275                 *val = (u_long)ivar->compatid;
 276                 break;
 277         default:
 278                 return ENOENT;
 279         }
 280         return 0;
 281 }
 282
 283 static int
 284 atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
 285 {
 286         atkbdc_device_t *ivar;
 287
 288         ivar = (atkbdc_device_t *)device_get_ivars(dev);
 289         switch (index) {
 290         case KBDC_IVAR_IRQ:
 291                 ivar->irq = (int)val;
 292                 break;
 293         case KBDC_IVAR_FLAGS:
 294                 ivar->flags = (int)val;
 295                 break;
 296         case KBDC_IVAR_VENDORID:
 297                 ivar->vendorid = (u_int32_t)val;
 298                 break;
 299         case KBDC_IVAR_SERIAL:
 300                 ivar->serial = (u_int32_t)val;
 301                 break;
 302         case KBDC_IVAR_LOGICALID:
 303                 ivar->logicalid = (u_int32_t)val;
 304                 break;
 305         case KBDC_IVAR_COMPATID:
 306                 ivar->compatid = (u_int32_t)val;
 307                 break;
 308         default:
 309                 return ENOENT;
 310         }
 311         return 0;
 312 }
 313
 314 DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);