sys/arch/i386/pnpbios/pckbc_pnpbios.c

   1 /*      $NetBSD: pckbc_pnpbios.c,v 1.16 2008/04/28 20:23:25 martin Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   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 /*
  33  * PNPBIOS attachment for the PC Keyboard Controller driver.
  34  *
  35  * This is a little wonky.  The keyboard controller actually
  36  * has 2 PNPBIOS nodes: one for the controller and the keyboard
  37  * interrupt, and one for the aux port (mouse) interrupt.
  38  *
  39  * For this reason, we actually attach *two* instances of this
  40  * driver.  After both of them have been found, then we attach
  41  * sub-devices.
  42  */
  43
  44 #include <sys/cdefs.h>
  45 __KERNEL_RCSID(0, "$NetBSD: pckbc_pnpbios.c,v 1.16 2008/04/28 20:23:25 martin Exp $");
  46
  47 #include <sys/param.h>
  48 #include <sys/systm.h>
  49 #include <sys/kernel.h>
  50 #include <sys/proc.h>
  51 #include <sys/device.h>
  52 #include <sys/malloc.h>
  53 #include <sys/errno.h>
  54 #include <sys/queue.h>
  55 #include <sys/bus.h>
  56
  57 #include <dev/isa/isareg.h>
  58 #include <dev/isa/isavar.h>
  59
  60 #include <dev/ic/i8042reg.h>
  61 #include <dev/ic/pckbcvar.h>
  62
  63 #include <i386/pnpbios/pnpbiosvar.h>
  64
  65 int     pckbc_pnpbios_match(device_t, cfdata_t, void *);
  66 void    pckbc_pnpbios_attach(device_t, device_t, void *);
  67
  68 struct pckbc_pnpbios_softc {
  69         struct pckbc_softc sc_pckbc;
  70
  71         isa_chipset_tag_t sc_ic;
  72         int sc_irq;
  73         int sc_ist;
  74         pckbc_slot_t sc_slot;
  75 };
  76
  77 /* Save first port: */
  78 static struct pckbc_pnpbios_softc *first;
  79
  80 extern struct cfdriver pckbc_cd;
  81
  82 CFATTACH_DECL_NEW(pckbc_pnpbios, sizeof(struct pckbc_pnpbios_softc),
  83     pckbc_pnpbios_match, pckbc_pnpbios_attach, NULL, NULL);
  84
  85 void    pckbc_pnpbios_intr_establish(struct pckbc_softc *, pckbc_slot_t);
  86 static void pckbc_pnpbios_finish_attach(device_t);
  87
  88 int
  89 pckbc_pnpbios_match(device_t parent, cfdata_t match, void *aux)
  90 {
  91         struct pnpbiosdev_attach_args *aa = aux;
  92
  93         if (strcmp(aa->idstr, "PNP0303") == 0 ||
  94             strcmp(aa->idstr, "PNP0320") == 0)  /* Japanese 106 */
  95                 return (1);                     /* plus more? */
  96         if (strcmp(aa->idstr, "PNP0F13") == 0)
  97                 return (1);
  98
  99         return (0);
 100 }
 101
 102 void
 103 pckbc_pnpbios_attach(device_t parent, device_t self, void *aux)
 104 {
 105         struct pckbc_pnpbios_softc *psc = device_private(self);
 106         struct pckbc_softc *sc = &psc->sc_pckbc;
 107         struct pckbc_internal *t;
 108         struct pnpbiosdev_attach_args *aa = aux;
 109         bus_space_tag_t iot;
 110         bus_space_handle_t ioh_d, ioh_c;
 111         pckbc_slot_t peer;
 112         int iobase;
 113
 114         sc->sc_dv = self;
 115         if (strncmp(aa->idstr, "PNP03", 5) == 0) {
 116                 psc->sc_slot = PCKBC_KBD_SLOT;
 117                 peer = PCKBC_AUX_SLOT;
 118         } else if (strcmp(aa->idstr, "PNP0F13") == 0) {
 119                 psc->sc_slot = PCKBC_AUX_SLOT;
 120                 peer = PCKBC_KBD_SLOT;
 121         } else {
 122                 aprint_error(": unknown port!\n");
 123                 panic("pckbc_pnpbios_attach: impossible");
 124         }
 125
 126         aprint_normal(": %s port\n", pckbc_slot_names[psc->sc_slot]);
 127
 128         if (pnpbios_getirqnum(aa->pbt, aa->resc, 0, &psc->sc_irq,
 129             &psc->sc_ist) != 0) {
 130                 aprint_error_dev(self, "unable to get IRQ number or type\n");
 131                 return;
 132         }
 133
 134         psc->sc_ic = aa->ic;
 135
 136         if (!first)
 137                 first = psc;
 138
 139         if (!first->sc_pckbc.id) {
 140
 141                 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase))
 142                         return;
 143
 144                 if (pckbc_is_console(iot, iobase)) {
 145                         t = &pckbc_consdata;
 146                         ioh_d = t->t_ioh_d;
 147                         ioh_c = t->t_ioh_c;
 148                         pckbc_console_attached = 1;
 149                         /* t->t_cmdbyte was initialized by cnattach */
 150                 } else {
 151                         if (pnpbios_io_map(aa->pbt, aa->resc, 0,
 152                                            &iot, &ioh_d) ||
 153                             pnpbios_io_map(aa->pbt, aa->resc, 1,
 154                                            &iot, &ioh_c))
 155                                 panic("pckbc_pnpbios_attach: couldn't map");
 156
 157                         t = malloc(sizeof(struct pckbc_internal),
 158                             M_DEVBUF, M_WAITOK);
 159                         memset(t, 0, sizeof(*t));
 160                         t->t_iot = iot;
 161                         t->t_ioh_d = ioh_d;
 162                         t->t_ioh_c = ioh_c;
 163                         t->t_addr = iobase;
 164                         t->t_cmdbyte = KC8_CPU; /* Enable ports */
 165                         callout_init(&t->t_cleanup, 0);
 166                 }
 167
 168                 t->t_sc = &first->sc_pckbc;
 169                 first->sc_pckbc.id = t;
 170
 171                 first->sc_pckbc.intr_establish = pckbc_pnpbios_intr_establish;
 172                 config_defer(first->sc_pckbc.sc_dv,
 173                              pckbc_pnpbios_finish_attach);
 174         }
 175 }
 176
 177 static void
 178 pckbc_pnpbios_finish_attach(device_t dv)
 179 {
 180
 181         pckbc_attach(device_private(dv));
 182 }
 183
 184 void
 185 pckbc_pnpbios_intr_establish(struct pckbc_softc *sc,
 186     pckbc_slot_t slot)
 187 {
 188         struct pckbc_pnpbios_softc *psc;
 189         isa_chipset_tag_t ic = NULL;
 190         void *rv = NULL;
 191         int irq, ist;
 192         int i;
 193
 194         /*
 195          * Note we're always called with sc == first.
 196          */
 197         for (i = 0; i < pckbc_cd.cd_ndevs; i++) {
 198                 psc = device_lookup_private(&pckbc_cd, i);
 199                 if (psc && psc->sc_slot == slot) {
 200                         irq = psc->sc_irq;
 201                         ist = psc->sc_ist;
 202                         ic = psc->sc_ic;
 203                         break;
 204                 }
 205         }
 206         if (i < pckbc_cd.cd_ndevs)
 207                 rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc);
 208         if (rv == NULL) {
 209                 aprint_error_dev(sc->sc_dv,
 210                     "unable to establish interrupt for %s slot\n",
 211                     pckbc_slot_names[slot]);
 212         } else {
 213                 aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
 214                     irq, pckbc_slot_names[slot]);
 215         }
 216 }