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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/5.2/sys/isa/atkbdc_isa.c 117167 2003-07-02 16:09:02Z jhb $");
   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 <machine/bus_pio.h>
   38 #include <machine/bus.h>
   39 #include <machine/resource.h>
   40 #include <sys/rman.h>
   41 
   42 #include <dev/kbd/atkbdcreg.h>
   43 
   44 #include <isa/isareg.h>
   45 #include <isa/isavar.h>
   46 
   47 static MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device");
   48 
   49 /* children */
   50 typedef struct atkbdc_device {
   51         struct resource_list resources;
   52         int rid;
   53         u_int32_t vendorid;
   54         u_int32_t serial;
   55         u_int32_t logicalid;
   56         u_int32_t compatid;
   57 } atkbdc_device_t;
   58 
   59 /* kbdc */
   60 static devclass_t atkbdc_devclass;
   61 
   62 static int      atkbdc_probe(device_t dev);
   63 static int      atkbdc_attach(device_t dev);
   64 static device_t atkbdc_add_child(device_t bus, int order, char *name,
   65                                  int unit);
   66 static int      atkbdc_print_child(device_t bus, device_t dev);
   67 static int      atkbdc_read_ivar(device_t bus, device_t dev, int index,
   68                                  uintptr_t *val);
   69 static int      atkbdc_write_ivar(device_t bus, device_t dev, int index,
   70                                   uintptr_t val);
   71 static struct resource_list
   72                 *atkbdc_get_resource_list (device_t bus, device_t dev);
   73 static struct resource
   74                 *atkbdc_alloc_resource(device_t bus, device_t dev, int type,
   75                                        int *rid, u_long start, u_long end,
   76                                        u_long count, u_int flags);
   77 static int      atkbdc_release_resource(device_t bus, device_t dev, int type,
   78                                         int rid, struct resource *res);
   79 
   80 static device_method_t atkbdc_methods[] = {
   81         DEVMETHOD(device_probe,         atkbdc_probe),
   82         DEVMETHOD(device_attach,        atkbdc_attach),
   83         DEVMETHOD(device_suspend,       bus_generic_suspend),
   84         DEVMETHOD(device_resume,        bus_generic_resume),
   85 
   86         DEVMETHOD(bus_add_child,        atkbdc_add_child),
   87         DEVMETHOD(bus_print_child,      atkbdc_print_child),
   88         DEVMETHOD(bus_read_ivar,        atkbdc_read_ivar),
   89         DEVMETHOD(bus_write_ivar,       atkbdc_write_ivar),
   90         DEVMETHOD(bus_get_resource_list,atkbdc_get_resource_list),
   91         DEVMETHOD(bus_alloc_resource,   atkbdc_alloc_resource),
   92         DEVMETHOD(bus_release_resource, atkbdc_release_resource),
   93         DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
   94         DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
   95         DEVMETHOD(bus_get_resource,     bus_generic_rl_get_resource),
   96         DEVMETHOD(bus_set_resource,     bus_generic_rl_set_resource),
   97         DEVMETHOD(bus_delete_resource,  bus_generic_rl_delete_resource),
   98         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
   99         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
  100 
  101         { 0, 0 }
  102 };
  103 
  104 static driver_t atkbdc_driver = {
  105         ATKBDC_DRIVER_NAME,
  106         atkbdc_methods,
  107         sizeof(atkbdc_softc_t *),
  108 };
  109 
  110 static struct isa_pnp_id atkbdc_ids[] = {
  111         { 0x0303d041, "Keyboard controller (i8042)" },  /* PNP0303 */
  112         { 0 }
  113 };
  114 
  115 static int
  116 atkbdc_probe(device_t dev)
  117 {
  118         struct resource *port0;
  119         struct resource *port1;
  120         u_long          start;
  121         u_long          count;
  122         int             error;
  123         int             rid;
  124 
  125         /* check PnP IDs */
  126         if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO)
  127                 return ENXIO;
  128 
  129         device_set_desc(dev, "Keyboard controller (i8042)");
  130 
  131         /*
  132          * Adjust I/O port resources.
  133          * The AT keyboard controller uses two ports (a command/data port
  134          * 0x60 and a status port 0x64), which may be given to us in 
  135          * one resource (0x60 through 0x64) or as two separate resources
  136          * (0x60 and 0x64). Furthermore, /boot/device.hints may contain
  137          * just one port, 0x60. We shall adjust resource settings 
  138          * so that these two ports are available as two separate resources.
  139          */
  140         device_quiet(dev);
  141         rid = 0;
  142         if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
  143                 return ENXIO;
  144         if (count > 1)  /* adjust the count */
  145                 bus_set_resource(dev, SYS_RES_IOPORT, rid, start, 1);
  146         port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  147                                    RF_ACTIVE);
  148         if (port0 == NULL)
  149                 return ENXIO;
  150         rid = 1;
  151         if (bus_get_resource(dev, SYS_RES_IOPORT, rid, NULL, NULL) != 0)
  152                 bus_set_resource(dev, SYS_RES_IOPORT, 1,
  153                                  start + KBD_STATUS_PORT, 1);
  154         port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  155                                    RF_ACTIVE);
  156         if (port1 == NULL) {
  157                 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
  158                 return ENXIO;
  159         }
  160         device_verbose(dev);
  161 
  162         error = atkbdc_probe_unit(device_get_unit(dev), port0, port1);
  163         if (error == 0)
  164                 bus_generic_probe(dev);
  165 
  166         bus_release_resource(dev, SYS_RES_IOPORT, 0, port0);
  167         bus_release_resource(dev, SYS_RES_IOPORT, 1, port1);
  168 
  169         return error;
  170 }
  171 
  172 static int
  173 atkbdc_attach(device_t dev)
  174 {
  175         atkbdc_softc_t  *sc;
  176         int             unit;
  177         int             error;
  178         int             rid;
  179 
  180         unit = device_get_unit(dev);
  181         sc = *(atkbdc_softc_t **)device_get_softc(dev);
  182         if (sc == NULL) {
  183                 /*
  184                  * We have to maintain two copies of the kbdc_softc struct,
  185                  * as the low-level console needs to have access to the
  186                  * keyboard controller before kbdc is probed and attached. 
  187                  * kbdc_soft[] contains the default entry for that purpose.
  188                  * See atkbdc.c. XXX
  189                  */
  190                 sc = atkbdc_get_softc(unit);
  191                 if (sc == NULL)
  192                         return ENOMEM;
  193         }
  194 
  195         rid = 0;
  196         sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  197                                        RF_ACTIVE);
  198         if (sc->port0 == NULL)
  199                 return ENXIO;
  200         rid = 1;
  201         sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
  202                                        RF_ACTIVE);
  203         if (sc->port1 == NULL) {
  204                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
  205                 return ENXIO;
  206         }
  207 
  208         error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1);
  209         if (error) {
  210                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0);
  211                 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1);
  212                 return error;
  213         }
  214         *(atkbdc_softc_t **)device_get_softc(dev) = sc;
  215 
  216         bus_generic_attach(dev);
  217 
  218         return 0;
  219 }
  220 
  221 static device_t
  222 atkbdc_add_child(device_t bus, int order, char *name, int unit)
  223 {
  224         atkbdc_device_t *ivar;
  225         device_t        child;
  226         int             t;
  227 
  228         ivar = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV,
  229                 M_NOWAIT | M_ZERO);
  230         if (!ivar)
  231                 return NULL;
  232 
  233         child = device_add_child_ordered(bus, order, name, unit);
  234         if (child == NULL) {
  235                 free(ivar, M_ATKBDDEV);
  236                 return child;
  237         }
  238 
  239         resource_list_init(&ivar->resources);
  240         ivar->rid = order;
  241 
  242         /*
  243          * If the device is not created by the PnP BIOS or ACPI,
  244          * refer to device hints for IRQ.
  245          */
  246         if (ISA_PNP_PROBE(device_get_parent(bus), bus, atkbdc_ids) != 0) {
  247                 if (resource_int_value(name, unit, "irq", &t) != 0)
  248                         t = -1;
  249         } else {
  250                 t = bus_get_resource_start(bus, SYS_RES_IRQ, ivar->rid);
  251         }
  252         if (t > 0)
  253                 resource_list_add(&ivar->resources, SYS_RES_IRQ, ivar->rid,
  254                                   t, t, 1);
  255 
  256         if (resource_int_value(name, unit, "flags", &t) == 0)
  257                 device_set_flags(child, t);
  258         if (resource_disabled(name, unit))
  259                 device_disable(child);
  260 
  261         device_set_ivars(child, ivar);
  262 
  263         return child;
  264 }
  265 
  266 static int
  267 atkbdc_print_child(device_t bus, device_t dev)
  268 {
  269         atkbdc_device_t *kbdcdev;
  270         u_long irq;
  271         int flags;
  272         int retval = 0;
  273 
  274         kbdcdev = (atkbdc_device_t *)device_get_ivars(dev);
  275 
  276         retval += bus_print_child_header(bus, dev);
  277         flags = device_get_flags(dev);
  278         if (flags != 0)
  279                 retval += printf(" flags 0x%x", flags);
  280         irq = bus_get_resource_start(dev, SYS_RES_IRQ, kbdcdev->rid);
  281         if (irq != 0)
  282                 retval += printf(" irq %ld", irq);
  283         retval += bus_print_child_footer(bus, dev);
  284 
  285         return (retval);
  286 }
  287 
  288 static int
  289 atkbdc_read_ivar(device_t bus, device_t dev, int index, uintptr_t *val)
  290 {
  291         atkbdc_device_t *ivar;
  292 
  293         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  294         switch (index) {
  295         case KBDC_IVAR_VENDORID:
  296                 *val = (u_long)ivar->vendorid;
  297                 break;
  298         case KBDC_IVAR_SERIAL:
  299                 *val = (u_long)ivar->serial;
  300                 break;
  301         case KBDC_IVAR_LOGICALID:
  302                 *val = (u_long)ivar->logicalid;
  303                 break;
  304         case KBDC_IVAR_COMPATID:
  305                 *val = (u_long)ivar->compatid;
  306                 break;
  307         default:
  308                 return ENOENT;
  309         }
  310         return 0;
  311 }
  312 
  313 static int
  314 atkbdc_write_ivar(device_t bus, device_t dev, int index, uintptr_t val)
  315 {
  316         atkbdc_device_t *ivar;
  317 
  318         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  319         switch (index) {
  320         case KBDC_IVAR_VENDORID:
  321                 ivar->vendorid = (u_int32_t)val;
  322                 break;
  323         case KBDC_IVAR_SERIAL:
  324                 ivar->serial = (u_int32_t)val;
  325                 break;
  326         case KBDC_IVAR_LOGICALID:
  327                 ivar->logicalid = (u_int32_t)val;
  328                 break;
  329         case KBDC_IVAR_COMPATID:
  330                 ivar->compatid = (u_int32_t)val;
  331                 break;
  332         default:
  333                 return ENOENT;
  334         }
  335         return 0;
  336 }
  337 
  338 static struct resource_list
  339 *atkbdc_get_resource_list (device_t bus, device_t dev)
  340 {
  341         atkbdc_device_t *ivar;
  342 
  343         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  344         return &ivar->resources;
  345 }
  346 
  347 static struct resource
  348 *atkbdc_alloc_resource(device_t bus, device_t dev, int type, int *rid,
  349                        u_long start, u_long end, u_long count, u_int flags)
  350 {
  351         atkbdc_device_t *ivar;
  352 
  353         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  354         return resource_list_alloc(&ivar->resources, bus, dev, type, rid,
  355                                    start, end, count, flags);
  356 }
  357 
  358 static int
  359 atkbdc_release_resource(device_t bus, device_t dev, int type, int rid,
  360                         struct resource *res)
  361 {
  362         atkbdc_device_t *ivar;
  363 
  364         ivar = (atkbdc_device_t *)device_get_ivars(dev);
  365         return resource_list_release(&ivar->resources, bus, dev, type, rid,
  366                                      res);
  367 }
  368 
  369 DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0);
  370 DRIVER_MODULE(atkbdc, acpi, atkbdc_driver, atkbdc_devclass, 0, 0);

Cache object: 470d5b3f3ea3062dea4b5a19ae52c06f


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