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pckbc_hpc.c revision 1.6 
      1 /* $NetBSD: pckbc_hpc.c,v 1.6 2007/07/09 20:52:26 ad Exp $	 */
      2 
      3 /*
      4  * Copyright (c) 2003 Christopher SEKIYA
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *          This product includes software developed for the
     18  *          NetBSD Project.  See http://www.NetBSD.org/ for
     19  *          information about NetBSD.
     20  * 4. The name of the author may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: pckbc_hpc.c,v 1.6 2007/07/09 20:52:26 ad Exp $");
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/kernel.h>
     41 #include <sys/proc.h>
     42 #include <sys/device.h>
     43 #include <sys/malloc.h>
     44 #include <sys/errno.h>
     45 #include <sys/queue.h>
     46 #include <sys/lock.h>
     47 
     48 #include <machine/autoconf.h>
     49 #include <machine/bus.h>
     50 #include <machine/machtype.h>
     51 
     52 #include <dev/ic/i8042reg.h>
     53 #include <dev/ic/pckbcvar.h>
     54 
     55 #include <sgimips/hpc/hpcreg.h>
     56 #include <sgimips/hpc/hpcvar.h>
     57 
     58 struct pckbc_hpc_softc {
     59 	struct pckbc_softc sc_pckbc;
     60 
     61 	int	sc_irq;
     62 	int	sc_hasintr;
     63 };
     64 
     65 static int      pckbc_hpc_match(struct device *, struct cfdata *, void *);
     66 static void     pckbc_hpc_attach(struct device *, struct device *, void *);
     67 static void     pckbc_hpc_intr_establish(struct pckbc_softc *, pckbc_slot_t);
     68 
     69 CFATTACH_DECL(pckbc_hpc, sizeof(struct pckbc_hpc_softc),
     70 	      pckbc_hpc_match, pckbc_hpc_attach, NULL, NULL);
     71 
     72 static int
     73 pckbc_hpc_match(struct device * parent, struct cfdata * cf, void *aux)
     74 {
     75 	struct hpc_attach_args *ha = aux;
     76 
     77 	if (strcmp(ha->ha_name, cf->cf_name) == 0)
     78 		return (1);
     79 
     80 	return (0);
     81 }
     82 
     83 static void
     84 pckbc_hpc_attach(struct device * parent, struct device * self, void *aux)
     85 {
     86 	struct pckbc_hpc_softc *msc = (void *) self;
     87 	struct pckbc_softc *sc = &msc->sc_pckbc;
     88 	struct hpc_attach_args *haa = aux;
     89 	struct pckbc_internal *t;
     90 	bus_space_handle_t ioh_d, ioh_c;
     91 
     92 	msc->sc_irq = haa->ha_irq;
     93 
     94 	msc->sc_hasintr = 0;
     95 
     96 	sc->intr_establish = pckbc_hpc_intr_establish;
     97 
     98 	/* XXX Ugly hack & kludge XXX */
     99 	if (pckbc_is_console(haa->ha_st, MIPS_KSEG1_TO_PHYS(haa->ha_sh +
    100 	    haa->ha_devoff))) {
    101 		t = &pckbc_consdata;
    102 		pckbc_console_attached = 1;
    103 	} else {
    104 		/* XXX should be bus_space_map() */
    105 		if (bus_space_subregion(haa->ha_st, haa->ha_sh,
    106 					haa->ha_devoff + KBDATAP, 1, &ioh_d) ||
    107 		    bus_space_subregion(haa->ha_st, haa->ha_sh,
    108 					haa->ha_devoff + KBCMDP, 1, &ioh_c))
    109 			panic("pckbc_hpc_attach: couldn't map");
    110 
    111 		t = malloc(sizeof(struct pckbc_internal), M_DEVBUF,
    112 		    M_WAITOK | M_ZERO);
    113 		t->t_iot = haa->ha_st;
    114 		t->t_ioh_d = ioh_d;
    115 		t->t_ioh_c = ioh_c;
    116 		t->t_addr = haa->ha_sh;
    117 		t->t_cmdbyte = KC8_CPU;	/* Enable ports */
    118 		callout_init(&t->t_cleanup, 0);
    119 	}
    120 
    121 	t->t_sc = sc;
    122 	sc->id = t;
    123 
    124 	printf("\n");
    125 
    126 	/* Finish off the attach. */
    127 	pckbc_attach(sc);
    128 }
    129 
    130 static void
    131 pckbc_hpc_intr_establish(struct pckbc_softc * sc, pckbc_slot_t slot)
    132 {
    133 	struct pckbc_hpc_softc *msc = (void *) sc;
    134 
    135 	if (msc->sc_hasintr)
    136 		return;
    137 
    138 	if (cpu_intr_establish(msc->sc_irq, IPL_TTY, pckbcintr, sc) == NULL) {
    139 		printf("%s: unable to establish interrupt for %s slot\n",
    140 		    sc->sc_dv.dv_xname, pckbc_slot_names[slot]);
    141 	} else {
    142 		msc->sc_hasintr = 1;
    143 	}
    144 }
    145