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pckbc_elb.c revision 1.11 
      1 /*	$NetBSD: pckbc_elb.c,v 1.11 2021/03/05 06:14:47 rin 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 1.11 2021/03/05 06:14:47 rin 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/kmem.h>
     40 
     41 #include <sys/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 = kmem_zalloc(sizeof(struct pckbc_internal), KM_SLEEP);
     92 	}
     93 
     94 	t->t_iot = eaa->elb_bt;
     95 	bus_space_map(eaa->elb_bt,
     96 	    _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base), 1, 0, &t->t_ioh_d);
     97 	bus_space_map(eaa->elb_bt,
     98 	    _BUS_SPACE_UNSTRIDE(eaa->elb_bt, eaa->elb_base2), 1, 0, &t->t_ioh_c);
     99 	t->t_addr = eaa->elb_base;
    100 	t->t_sc = sc;
    101 	sc->id = t;
    102 
    103 	aprint_normal("\n");
    104 
    105 	pckbc_attach(sc);
    106 }
    107 
    108 static void
    109 pckbc_elb_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
    110 {
    111 	struct pckbc_elb_softc *msc = (void *)sc;
    112 	int irq = msc->sc_irq;
    113 
    114 	/*
    115 	 * We ignore slot since all slots use the same interrupt.
    116 	 */
    117 
    118 	if (irq >= 0)
    119 	 	intr_establish_xname(irq, IST_LEVEL, IPL_TTY, pckbcintr, sc,
    120 		    device_xname(sc->sc_dv));
    121 
    122 	msc->sc_irq = -1;
    123 }
    124