sys/arch/alpha/sableio/pckbc_sableio.c

   1 /* $NetBSD: pckbc_sableio.c,v 1.8 2008/04/28 20:23:12 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1999 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 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  33
  34 __KERNEL_RCSID(0, "$NetBSD: pckbc_sableio.c,v 1.8 2008/04/28 20:23:12 martin Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/kernel.h>
  39 #include <sys/proc.h>
  40 #include <sys/device.h>
  41 #include <sys/malloc.h>
  42 #include <sys/errno.h>
  43 #include <sys/queue.h>
  44 #include <sys/intr.h>
  45 #include <sys/bus.h>
  46
  47 #include <dev/ic/i8042reg.h>
  48 #include <dev/ic/pckbcvar.h>
  49
  50 #include <dev/pci/pcivar.h>
  51 #include <dev/isa/isavar.h>
  52
  53 #include <alpha/sableio/sableiovar.h>
  54
  55 struct pckbc_sableio_softc {
  56         struct  pckbc_softc sc_pckbc;   /* real "pckbc" softc */
  57
  58         /* STDIO-specific goo. */
  59         void    *sc_ih[PCKBC_NSLOTS];   /* interrupt handlers */
  60         int     sc_irq[PCKBC_NSLOTS];   /* Sable IRQs to use */
  61         pci_chipset_tag_t sc_pc;        /* PCI chipset for registering intrs */
  62 };
  63
  64 int     pckbc_sableio_match(device_t, cfdata_t, void *);
  65 void    pckbc_sableio_attach(device_t, device_t, void *);
  66
  67 CFATTACH_DECL_NEW(pckbc_sableio, sizeof(struct pckbc_sableio_softc),
  68     pckbc_sableio_match, pckbc_sableio_attach, NULL, NULL);
  69
  70 void    pckbc_sableio_intr_establish(struct pckbc_softc *, pckbc_slot_t);
  71
  72 int
  73 pckbc_sableio_match(device_t parent, cfdata_t match, void *aux)
  74 {
  75         struct sableio_attach_args *sa = aux;
  76
  77         /* Always present. */
  78         if (strcmp(sa->sa_name, match->cf_name) == 0)
  79                 return (1);
  80
  81         return (0);
  82 }
  83
  84 void
  85 pckbc_sableio_attach(device_t parent, device_t self, void *aux)
  86 {
  87         struct pckbc_sableio_softc *ssc = device_private(self);
  88         struct pckbc_softc *sc = &ssc->sc_pckbc;
  89         struct sableio_attach_args *sa = aux;
  90         struct pckbc_internal *t;
  91         bus_space_handle_t ioh_d, ioh_c;
  92
  93         sc->sc_dv = self;
  94         ssc->sc_pc = sa->sa_pc;
  95
  96         /*
  97          * Set up IRQs.
  98          */
  99         ssc->sc_irq[PCKBC_KBD_SLOT] = sa->sa_sableirq[0];
 100         ssc->sc_irq[PCKBC_AUX_SLOT] = sa->sa_sableirq[1];
 101
 102         sc->intr_establish = pckbc_sableio_intr_establish;
 103
 104         if (pckbc_is_console(sa->sa_iot, sa->sa_ioaddr)) {
 105                 t = &pckbc_consdata;
 106                 pckbc_console_attached = 1;
 107                 /* t->t_cmdbyte was initialized by cnattach */
 108         } else {
 109                 if (bus_space_map(sa->sa_iot, sa->sa_ioaddr + KBDATAP,
 110                                   1, 0, &ioh_d) != 0 ||
 111                     bus_space_map(sa->sa_iot, sa->sa_ioaddr + KBCMDP,
 112                                   1, 0, &ioh_c) != 0)
 113                         panic("pckbc_sableio_attach: couldn't map");
 114
 115                 t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK);
 116                 memset(t, 0, sizeof(struct pckbc_internal));
 117                 t->t_iot = sa->sa_iot;
 118                 t->t_ioh_d = ioh_d;
 119                 t->t_ioh_c = ioh_c;
 120                 t->t_addr = sa->sa_ioaddr;
 121                 t->t_cmdbyte = KC8_CPU; /* Enable ports */
 122         }
 123
 124         t->t_sc = sc;
 125         sc->id = t;
 126
 127         aprint_normal("\n");
 128
 129         /* Finish off the attach. */
 130         pckbc_attach(sc);
 131 }
 132
 133 void
 134 pckbc_sableio_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
 135 {
 136         struct pckbc_sableio_softc *ssc = (void *) sc;
 137         const char *intrstr;
 138
 139         intrstr = pci_intr_string(ssc->sc_pc, ssc->sc_irq[slot]);
 140         ssc->sc_ih[slot] = pci_intr_establish(ssc->sc_pc, ssc->sc_irq[slot],
 141             IPL_TTY, pckbcintr, sc);
 142         if (ssc->sc_ih[slot] == NULL) {
 143                 aprint_error_dev(sc->sc_dv,
 144                     "unable to establish interrupt for %s slot",
 145                     pckbc_slot_names[slot]);
 146                 if (intrstr != NULL)
 147                         aprint_error(" at %s", intrstr);
 148                 aprint_error("\n");
 149                 return;
 150         }
 151         aprint_normal_dev(sc->sc_dv, "%s slot interrupting at %s\n",
 152             pckbc_slot_names[slot], intrstr);
 153 }