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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/6.0/sys/dev/atkbdc/atkbdc_isa.c 147271 2005-06-10 20:56:38Z marius $");
   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/module.h>
   36 #include <sys/bus.h>
   37 #include <sys/malloc.h>
   38 #include <machine/resource.h>
   39 #include <sys/rman.h>
   40 
   41 #include <dev/atkbdc/atkbdc_subr.h>
   42 #include <dev/atkbdc/atkbdcreg.h>
   43 
   44 #include <isa/isareg.h>
   45 #include <isa/isavar.h>
   46 
   47 static int      atkbdc_isa_probe(device_t dev);
   48 static int      atkbdc_isa_attach(device_t dev);
   49 static device_t atkbdc_isa_add_child(device_t bus, int order, char *name,
   50                                  int unit);
   51 
   52 static device_method_t atkbdc_isa_methods[] = {
   53         DEVMETHOD(device_probe,         atkbdc_isa_probe),
   54         DEVMETHOD(device_attach,        atkbdc_isa_attach),
   55         DEVMETHOD(device_suspend,       bus_generic_suspend),
   56         DEVMETHOD(device_resume,        bus_generic_resume),
   57 
   58         DEVMETHOD(bus_add_child,        atkbdc_isa_add_child),
   59         DEVMETHOD(bus_print_child,      atkbdc_print_child),
   60         DEVMETHOD(bus_read_ivar,        atkbdc_read_ivar),
   61         DEVMETHOD(bus_write_ivar,       atkbdc_write_ivar),
   62         DEVMETHOD(bus_get_resource_list,atkbdc_get_resource_list),
   63         DEVMETHOD(bus_alloc_resource,   bus_generic_rl_alloc_resource),
   64         DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
   65         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   66         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   67         DEVMETHOD(bus_get_resource,     bus_generic_rl_get_resource),
   68         DEVMETHOD(bus_set_resource,     bus_generic_rl_set_resource),
   69         DEVMETHOD(bus_delete_resource,  bus_generic_rl_delete_resource),
   70         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   71         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
   72 
   73         { 0, 0 }
   74 };
   75 
   76 static driver_t atkbdc_isa_driver = {
   77         ATKBDC_DRIVER_NAME,
   78         atkbdc_isa_methods,
   79         sizeof(atkbdc_softc_t *),
   80 };
   81 
   82 static struct isa_pnp_id atkbdc_ids[] = {
   83         { 0x0303d041, "Keyboard controller (i8042)" },  /* PNP0303 */
   84         { 0 }
   85 };
   86 
   87 static int
   88 atkbdc_isa_probe(device_t dev)
   89 {
   90         struct resource *port0;
   91         struct resource *port1;
   92         u_long          start;
   93         u_long          count;
   94         int             error;
   95         int             rid;
   96 
   97         /* check PnP IDs */
   98         if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
   99                 return ENXIO;
  100 
  101         device_set_desc(dev, "Keyboard controller (i8042)");
  102 
  103         /*
  104          * Adjust I/O port resources.
  105          * The AT keyboard controller uses two ports (a command/data port
  106          * 0x60 and a status port 0x64), which may be given to us in 
  107          * one resource (0x60 through 0x64) or as two separate resources
  108          * (0x60 and 0x64). Furthermore, /boot/device.hints may contain
  109          * just one port, 0x60. We shall adjust resource settings 
  110          * so that these two ports are available as two separate resources.
  111          */
  112         device_quiet(dev);
  113         rid = 0;
  114         if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
  115                 return ENXIO;
  116         if (count > 1)  /* adjust the count */
  117                 bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
  118         port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
  119         if (port0 == NULL)
  120                 return ENXIO;
  121         rid = 1;
  122         if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
  123                 bus_set_resource(dev, SYS_RES_IOPORT, 1,
  124                                  start + KBD_STATUS_PORT, 1);
  125         port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
  126         if (port1 == NULL) {
  127                 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
  128                 return ENXIO;
  129         }
  130         device_verbose(dev);
  131 
  132         error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
  133         if (error == 0)
  134                 bus_generic_probe(dev);
  135 
  136         bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
  137         bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
  138 
  139         return error;
  140 }
  141 
  142 static int
  143 atkbdc_isa_attach(device_t dev)
  144 {
  145         atkbdc_softc_t  *sc;
  146         int             unit;
  147         int             error;
  148         int             rid;
  149 
  150         unit = device_get_unit(dev);
  151         sc = *(atkbdc_softc_t **)device_get_softc(dev);
  152         if (sc == NULL) {
  153                 /*
  154                  * We have to maintain two copies of the kbdc_softc struct,
  155                  * as the low-level console needs to have access to the
  156                  * keyboard controller before kbdc is probed and attached.
  157                  * kbdc_soft[] contains the default entry for that purpose.
  158                  * See atkbdc.c. XXX
  159                  */
  160                 sc = atkbdc_get_softc(unit);
  161                 if (sc == NULL)
  162                         return ENOMEM;
  163         }
  164 
  165         rid = 0;
  166         sc->port0 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
  167                                            RF_ACTIVE);
  168         if (sc->port0 == NULL)
  169                 return ENXIO;
  170         rid = 1;
  171         sc->port1 = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
  172                                            RF_ACTIVE);
  173         if (sc->port1 == NULL) {
  174                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
  175                 return ENXIO;
  176         }
  177 
  178         error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
  179         if (error) {
  180                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
  181                 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
  182                 return error;
  183         }
  184         *(atkbdc_softc_t **)device_get_softc(dev) = sc;
  185 
  186         bus_generic_attach(dev);
  187 
  188         return 0;
  189 }
  190 
  191 static device_t
  192 atkbdc_isa_add_child(device_t bus, int order, char *name, int unit)
  193 {
  194         atkbdc_device_t *ivar;
  195         device_t        child;
  196         int             t;
  197 
  198         ivar = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV,
  199                 M_NOWAIT | M_ZERO);
  200         if (!ivar)
  201                 return NULL;
  202 
  203         child = device_add_child_ordered(bus, order, name, unit);
  204         if (child == NULL) {
  205                 free(ivar, M_ATKBDDEV);
  206                 return child;
  207         }
  208 
  209         resource_list_init(&ivar->resources);
  210         ivar->rid = order;
  211 
  212         /*
  213          * If the device is not created by the PnP BIOS or ACPI,
  214          * refer to device hints for IRQ.
  215          */
  216         if (ISA_PNP_PROBE(device_get_parent(bus), bus, atkbdc_ids) != 0) {
  217                 if (resource_int_value(name, unit, "irq", &t) != 0)
  218                         t = -1;
  219         } else {
  220                 t = bus_get_resource_start(bus, SYS_RES_IRQ, ivar->rid);
  221         }
  222         if (t > 0)
  223                 resource_list_add(&ivar->resources, SYS_RES_IRQ, ivar->rid,
  224                                   t, t, 1);
  225 
  226         if (resource_disabled(name, unit))
  227                 device_disable(child);
  228 
  229         device_set_ivars(child, ivar);
  230 
  231         return child;
  232 }
  233 
  234 DRIVER_MODULE(atkbdc, isa, atkbdc_isa_driver, atkbdc_devclass, 0, 0);
  235 DRIVER_MODULE(atkbdc, acpi, atkbdc_isa_driver, atkbdc_devclass, 0, 0);

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FreeBSD/Linux Kernel Cross Reference sys/dev/atkbdc/atkbdc_isa.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/atkbdc/atkbdc_isa.c