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ms_kbc.c revision 1.2 
      1 /*	$NetBSD: ms_kbc.c,v 1.2 2002/03/17 19:40:45 atatat Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
      5  * Copyright (c) 2000 Tsubai Masanari.  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. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/param.h>
     31 #include <sys/device.h>
     32 #include <sys/systm.h>
     33 
     34 #include <dev/wscons/wsconsio.h>
     35 #include <dev/wscons/wsmousevar.h>
     36 
     37 #include <machine/cpu.h>
     38 #include <machine/bus.h>
     39 
     40 #include <news68k/dev/kbcreg.h>
     41 #include <news68k/dev/kbcvar.h>
     42 #include <news68k/dev/msvar.h>
     43 
     44 #include <news68k/news68k/isr.h>
     45 
     46 int ms_kbc_match(struct device *, struct cfdata *, void *);
     47 void ms_kbc_attach(struct device *, struct device *, void *);
     48 void ms_kbc_init(struct ms_softc *);
     49 int ms_kbc_intr(void *);
     50 
     51 int ms_kbc_enable(void *);
     52 void ms_kbc_disable(void *);
     53 int ms_kbc_ioctl(void *, u_long, caddr_t, int, struct proc *);
     54 
     55 struct cfattach ms_kbc_ca = {
     56 	sizeof(struct ms_softc), ms_kbc_match, ms_kbc_attach
     57 };
     58 
     59 struct wsmouse_accessops ms_kbc_accessops = {
     60 	ms_kbc_enable,
     61 	ms_kbc_ioctl,
     62 	ms_kbc_disable
     63 };
     64 
     65 int
     66 ms_kbc_match(parent, cf, aux)
     67 	struct device *parent;
     68 	struct cfdata *cf;
     69 	void *aux;
     70 {
     71 	struct kbc_attach_args *ka = aux;
     72 
     73 	if (strcmp(ka->ka_name, "ms"))
     74 		return 0;
     75 
     76 	return 1;
     77 }
     78 
     79 void
     80 ms_kbc_attach(parent, self, aux)
     81 	struct device *parent, *self;
     82 	void *aux;
     83 {
     84 	struct ms_softc *sc = (void *)self;
     85 	struct kbc_attach_args *ka = aux;
     86 	struct wsmousedev_attach_args wsa;
     87 	int ipl;
     88 
     89 	printf("\n");
     90 
     91 	sc->sc_bt = ka->ka_bt;
     92 	sc->sc_bh = ka->ka_bh;
     93 	sc->sc_offset = KBC_MSREG_DATA;
     94 	ipl = ka->ka_ipl;
     95 
     96 	ms_kbc_init(sc);
     97 
     98 	isrlink_autovec(ms_kbc_intr, (void *)sc, ipl, ISRPRI_TTY);
     99 
    100 	wsa.accessops = &ms_kbc_accessops;
    101 	wsa.accesscookie = sc;
    102 	sc->sc_wsmousedev = config_found(self, &wsa, wsmousedevprint);
    103 }
    104 
    105 void
    106 ms_kbc_init(sc)
    107 	struct ms_softc *sc;
    108 {
    109 	bus_space_tag_t bt = sc->sc_bt;
    110 	bus_space_handle_t bh = sc->sc_bh;
    111 
    112 	bus_space_write_1(bt, bh, KBC_MSREG_RESET, 0);
    113 	bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
    114 }
    115 
    116 int
    117 ms_kbc_intr(v)
    118 	void *v;
    119 {
    120 	struct ms_softc *sc = v;
    121 	bus_space_tag_t bt = sc->sc_bt;
    122 	bus_space_handle_t bh = sc->sc_bh;
    123 	int handled = 0;
    124 
    125 	while (bus_space_read_1(bt, bh, KBC_MSREG_STAT) & KBCSTAT_MSRDY) {
    126 		ms_intr(sc);
    127 		handled = 1;
    128 	}
    129 	if (handled)
    130 		bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
    131 
    132 	return handled;
    133 }
    134 
    135 int
    136 ms_kbc_enable(v)
    137 	void *v;
    138 {
    139 	struct ms_softc *sc = v;
    140 	bus_space_tag_t bt = sc->sc_bt;
    141 	bus_space_handle_t bh = sc->sc_bh;
    142 
    143 	bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
    144 
    145 	return 0;
    146 }
    147 
    148 void
    149 ms_kbc_disable(v)
    150 	void *v;
    151 {
    152 	struct ms_softc *sc = v;
    153 	bus_space_tag_t bt = sc->sc_bt;
    154 	bus_space_handle_t bh = sc->sc_bh;
    155 
    156 	bus_space_write_1(bt, bh, KBC_MSREG_INTE, 0);
    157 }
    158 
    159 int
    160 ms_kbc_ioctl(v, cmd, data, flag, p)
    161 	void *v;
    162 	u_long cmd;
    163 	caddr_t data;
    164 	int flag;
    165 	struct proc *p;
    166 {
    167 	return EPASSTHROUGH;
    168 }
    169