sys/arch/evbppc/explora/dev/pckbc_elb.c

   1 /*      $NetBSD: pckbc_elb.c,v 1.5 2008/03/15 13:23:24 cube Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Juergen Hannken-Illjes.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: pckbc_elb.c,v 1.5 2008/03/15 13:23:24 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/conf.h>
  37 #include <sys/device.h>
  38 #include <sys/systm.h>
  39 #include <sys/malloc.h>
  40
  41 #include <machine/bus.h>
  42
  43 #include <dev/ic/i8042reg.h>
  44 #include <dev/ic/pckbcvar.h>
  45
  46 #include <evbppc/explora/dev/elbvar.h>
  47
  48 struct pckbc_elb_softc {
  49         struct pckbc_softc sc_pckbc;
  50         int sc_irq;
  51 };
  52
  53 static int      pckbc_elb_probe(device_t, cfdata_t, void *);
  54 static void     pckbc_elb_attach(device_t, device_t, void *);
  55 static void     pckbc_elb_intr_establish(struct pckbc_softc *, pckbc_slot_t);
  56
  57 CFATTACH_DECL_NEW(pckbc_elb, sizeof(struct pckbc_elb_softc),
  58     pckbc_elb_probe, pckbc_elb_attach, NULL, NULL);
  59
  60 int
  61 pckbc_elb_probe(device_t parent, cfdata_t cf, void *aux)
  62 {
  63         struct elb_attach_args *oaa = aux;
  64
  65         if (strcmp(oaa->elb_name, cf->cf_name) != 0)
  66                 return 0;
  67
  68         return (1);
  69 }
  70
  71 void
  72 pckbc_elb_attach(device_t parent, device_t self, void *aux)
  73 {
  74         struct pckbc_elb_softc *msc = device_private(self);
  75         struct pckbc_softc *sc = &msc->sc_pckbc;
  76         struct elb_attach_args *eaa = aux;
  77         struct pckbc_internal *t;
  78
  79         sc->sc_dv = self;
  80
  81         /*
  82          * Setup interrupt data.
  83          */
  84         msc->sc_irq = eaa->elb_irq;
  85         sc->intr_establish = pckbc_elb_intr_establish;
  86
  87         if (pckbc_is_console(eaa->elb_bt, eaa->elb_base)) {
  88                 t = &pckbc_consdata;
  89                 pckbc_console_attached = 1;
  90         } else {
  91                 t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK);
  92                 memset(t, 0, sizeof(struct pckbc_internal));
  93         }
  94
  95         t->t_iot = eaa->elb_bt;
  96         bus_space_map(eaa->elb_bt,
  97             _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base), 1, 0, &t->t_ioh_d);
  98         bus_space_map(eaa->elb_bt,
  99             _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base2), 1, 0, &t->t_ioh_c);
 100         t->t_addr = eaa->elb_base;
 101         t->t_sc = sc;
 102         sc->id = t;
 103
 104         aprint_normal("\n");
 105
 106         pckbc_attach(sc);
 107 }
 108
 109 static void
 110 pckbc_elb_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
 111 {
 112         struct pckbc_elb_softc *msc = (void *)sc;
 113         int irq = msc->sc_irq;
 114
 115         /*
 116          * We ignore slot since all slots use the same interrupt.
 117          */
 118
 119         if (irq >= 0)
 120                 intr_establish(irq, IST_LEVEL, IPL_SERIAL, pckbcintr, sc);
 121
 122         irq = -1;
 123 }