The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/isa/atkbdc_isa.c

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    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  */
   28 
   29 #include "opt_kbd.h"
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/kernel.h>
   34 #include <sys/bus.h>
   35 #include <sys/malloc.h>
   36 #include <machine/bus_pio.h>
   37 #include <machine/bus.h>
   38 #include <machine/resource.h>
   39 #include <sys/rman.h>
   40 
   41 #include <dev/kbd/atkbdcreg.h>
   42 
   43 #include <isa/isareg.h>
   44 #include <isa/isavar.h>
   45 
   46 MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device");
   47 
   48 /* children */
   49 typedef struct atkbdc_device {
   50         int flags;      /* configuration flags */
   51         int irq;        /* ISA IRQ mask */
   52         u_int32_t vendorid;
   53         u_int32_t serial;
   54         u_int32_t logicalid;
   55         u_int32_t compatid;
   56 } atkbdc_device_t;
   57 
   58 /* kbdc */
   59 devclass_t atkbdc_devclass;
   60 
   61 static int      atkbdc_probe(device_t dev);
   62 static int      atkbdc_attach(device_t dev);
   63 static int      atkbdc_print_child(device_t bus, device_t dev);
   64 static int      atkbdc_read_ivar(device_t bus, device_t dev, int index,
   65                                  u_long *val);
   66 static int      atkbdc_write_ivar(device_t bus, device_t dev, int index,
   67                                   u_long val);
   68 
   69 static device_method_t atkbdc_methods[] = {
   70         DEVMETHOD(device_probe,         atkbdc_probe),
   71         DEVMETHOD(device_attach,        atkbdc_attach),
   72         DEVMETHOD(device_suspend,       bus_generic_suspend),
   73         DEVMETHOD(device_resume,        bus_generic_resume),
   74 
   75         DEVMETHOD(bus_print_child,      atkbdc_print_child),
   76         DEVMETHOD(bus_read_ivar,        atkbdc_read_ivar),
   77         DEVMETHOD(bus_write_ivar,       atkbdc_write_ivar),
   78         DEVMETHOD(bus_alloc_resource,   bus_generic_alloc_resource),
   79         DEVMETHOD(bus_release_resource, bus_generic_release_resource),
   80         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   81         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   82         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   83         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
   84 
   85         { 0, 0 }
   86 };
   87 
   88 static driver_t atkbdc_driver = {
   89         ATKBDC_DRIVER_NAME,
   90         atkbdc_methods,
   91         sizeof(atkbdc_softc_t *),
   92 };
   93 
   94 static struct isa_pnp_id atkbdc_ids[] = {
   95         { 0x0303d041, "Keyboard controller (i8042)" },  /* PNP0303 */
   96         { 0 }
   97 };
   98 
   99 static int
  100 atkbdc_probe(device_t dev)
  101 {
  102         struct resource *port0;
  103         struct resource *port1;
  104         int             error;
  105         int             rid;
  106 
  107         /* check PnP IDs */
  108         if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
  109                 return ENXIO;
  110 
  111         device_set_desc(dev, "Keyboard controller (i8042)");
  112 
  113         rid = 0;
  114         port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  115                                    RF_ACTIVE);
  116         if (port0 == NULL)
  117                 return ENXIO;
  118         /* XXX */
  119         if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) {
  120                 bus_set_resource(dev, SYS_RES_IOPORT, 1,
  121                                  rman_get_start(port0) + KBD_STATUS_PORT, 1);
  122         }
  123         rid = 1;
  124         port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  125                                    RF_ACTIVE);
  126         if (port1 == NULL) {
  127                 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
  128                 return ENXIO;
  129         }
  130 
  131         error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
  132 
  133         bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
  134         bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
  135 
  136         return error;
  137 }
  138 
  139 static void
  140 atkbdc_add_device(device_t dev, const char *name, int unit)
  141 {
  142         atkbdc_device_t *kdev;
  143         device_t        child;
  144         int             t;
  145 
  146         if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
  147                 return;
  148 
  149         kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT);
  150         if (!kdev)
  151                 return;
  152         bzero(kdev, sizeof *kdev);
  153 
  154         if (resource_int_value(name, unit, "irq", &t) == 0)
  155                 kdev->irq = t;
  156         else
  157                 kdev->irq = -1;
  158 
  159         if (resource_int_value(name, unit, "flags", &t) == 0)
  160                 kdev->flags = t;
  161         else
  162                 kdev->flags = 0;
  163 
  164         child = device_add_child(dev, name, unit);
  165         device_set_ivars(child, kdev);
  166 }
  167 
  168 static int
  169 atkbdc_attach(device_t dev)
  170 {
  171         atkbdc_softc_t  *sc;
  172         int             unit;
  173         int             error;
  174         int             rid;
  175         int             i;
  176 
  177         unit = device_get_unit(dev);
  178         sc = *(atkbdc_softc_t **)device_get_softc(dev);
  179         if (sc == NULL) {
  180                 /*
  181                  * We have to maintain two copies of the kbdc_softc struct,
  182                  * as the low-level console needs to have access to the
  183                  * keyboard controller before kbdc is probed and attached. 
  184                  * kbdc_soft[] contains the default entry for that purpose.
  185                  * See atkbdc.c. XXX
  186                  */
  187                 sc = atkbdc_get_softc(unit);
  188                 if (sc == NULL)
  189                         return ENOMEM;
  190         }
  191 
  192         rid = 0;
  193         sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  194                                        RF_ACTIVE);
  195         if (sc->port0 == NULL)
  196                 return ENXIO;
  197         rid = 1;
  198         sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  199                                        RF_ACTIVE);
  200         if (sc->port1 == NULL) {
  201                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
  202                 return ENXIO;
  203         }
  204 
  205         error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
  206         if (error) {
  207                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
  208                 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
  209                 return error;
  210         }
  211         *(atkbdc_softc_t **)device_get_softc(dev) = sc;
  212 
  213         /*
  214          * Add all devices configured to be attached to atkbdc0.
  215          */
  216         for (i = resource_query_string(-1, "at", device_get_nameunit(dev));
  217              i != -1;
  218              i = resource_query_string(i, "at", device_get_nameunit(dev))) {
  219                 atkbdc_add_device(dev, resource_query_name(i),
  220                                   resource_query_unit(i));
  221         }
  222 
  223         /*
  224          * and atkbdc?
  225          */
  226         for (i = resource_query_string(-1, "at", device_get_name(dev));
  227              i != -1;
  228              i = resource_query_string(i, "at", device_get_name(dev))) {
  229                 atkbdc_add_device(dev, resource_query_name(i),
  230                                   resource_query_unit(i));
  231         }
  232 
  233         bus_generic_attach(dev);
  234 
  235         return 0;
  236 }
  237 
  238 static int
  239 atkbdc_print_child(device_t bus, device_t dev)
  240 {
  241         atkbdc_device_t *kbdcdev;
  242         int retval = 0;
  243 
  244         kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
  245 
  246         retval += bus_print_child_header(bus, dev);
  247         if (kbdcdev->flags != 0)
  248                 retval += printf(" flags 0x%x", kbdcdev->flags);
  249         if (kbdcdev->irq != -1)
  250                 retval += printf(" irq %d", kbdcdev->irq);
  251         retval += bus_print_child_footer(bus, dev);
  252 
  253         return (retval);
  254 }
  255 
  256 static int
  257 atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
  258 {
  259         atkbdc_device_t *ivar;
  260 
  261         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  262         switch (index) {
  263         case KBDC_IVAR_IRQ:
  264                 *val = (u_long)ivar->irq;
  265                 break;
  266         case KBDC_IVAR_FLAGS:
  267                 *val = (u_long)ivar->flags;
  268                 break;
  269         case KBDC_IVAR_VENDORID:
  270                 *val = (u_long)ivar->vendorid;
  271                 break;
  272         case KBDC_IVAR_SERIAL:
  273                 *val = (u_long)ivar->serial;
  274                 break;
  275         case KBDC_IVAR_LOGICALID:
  276                 *val = (u_long)ivar->logicalid;
  277                 break;
  278         case KBDC_IVAR_COMPATID:
  279                 *val = (u_long)ivar->compatid;
  280                 break;
  281         default:
  282                 return ENOENT;
  283         }
  284         return 0;
  285 }
  286 
  287 static int
  288 atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
  289 {
  290         atkbdc_device_t *ivar;
  291 
  292         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  293         switch (index) {
  294         case KBDC_IVAR_IRQ:
  295                 ivar->irq = (int)val;
  296                 break;
  297         case KBDC_IVAR_FLAGS:
  298                 ivar->flags = (int)val;
  299                 break;
  300         case KBDC_IVAR_VENDORID:
  301                 ivar->vendorid = (u_int32_t)val;
  302                 break;
  303         case KBDC_IVAR_SERIAL:
  304                 ivar->serial = (u_int32_t)val;
  305                 break;
  306         case KBDC_IVAR_LOGICALID:
  307                 ivar->logicalid = (u_int32_t)val;
  308                 break;
  309         case KBDC_IVAR_COMPATID:
  310                 ivar->compatid = (u_int32_t)val;
  311                 break;
  312         default:
  313                 return ENOENT;
  314         }
  315         return 0;
  316 }
  317 
  318 DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);

Cache object: 377b063915373519df2286dbf80e69aa


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