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ms_kbc.c revision 1.5 
      1 /*	$NetBSD: ms_kbc.c,v 1.5 2003/07/15 02:59:26 lukem 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/cdefs.h>
     31 __KERNEL_RCSID(0, "$NetBSD: ms_kbc.c,v 1.5 2003/07/15 02:59:26 lukem Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/device.h>
     35 #include <sys/systm.h>
     36 
     37 #include <dev/wscons/wsconsio.h>
     38 #include <dev/wscons/wsmousevar.h>
     39 
     40 #include <machine/cpu.h>
     41 #include <machine/bus.h>
     42 
     43 #include <news68k/dev/kbcreg.h>
     44 #include <news68k/dev/kbcvar.h>
     45 #include <news68k/dev/msvar.h>
     46 
     47 #include <news68k/news68k/isr.h>
     48 
     49 int ms_kbc_match(struct device *, struct cfdata *, void *);
     50 void ms_kbc_attach(struct device *, struct device *, void *);
     51 void ms_kbc_init(struct ms_softc *);
     52 int ms_kbc_intr(void *);
     53 
     54 int ms_kbc_enable(void *);
     55 void ms_kbc_disable(void *);
     56 int ms_kbc_ioctl(void *, u_long, caddr_t, int, struct proc *);
     57 
     58 CFATTACH_DECL(ms_kbc, sizeof(struct ms_softc),
     59     ms_kbc_match, ms_kbc_attach, NULL, NULL);
     60 
     61 struct wsmouse_accessops ms_kbc_accessops = {
     62 	ms_kbc_enable,
     63 	ms_kbc_ioctl,
     64 	ms_kbc_disable
     65 };
     66 
     67 int
     68 ms_kbc_match(parent, cf, aux)
     69 	struct device *parent;
     70 	struct cfdata *cf;
     71 	void *aux;
     72 {
     73 	struct kbc_attach_args *ka = aux;
     74 
     75 	if (strcmp(ka->ka_name, "ms"))
     76 		return 0;
     77 
     78 	return 1;
     79 }
     80 
     81 void
     82 ms_kbc_attach(parent, self, aux)
     83 	struct device *parent, *self;
     84 	void *aux;
     85 {
     86 	struct ms_softc *sc = (void *)self;
     87 	struct kbc_attach_args *ka = aux;
     88 	struct wsmousedev_attach_args wsa;
     89 	int ipl;
     90 
     91 	printf("\n");
     92 
     93 	sc->sc_bt = ka->ka_bt;
     94 	sc->sc_bh = ka->ka_bh;
     95 	sc->sc_offset = KBC_MSREG_DATA;
     96 	ipl = ka->ka_ipl;
     97 
     98 	ms_kbc_init(sc);
     99 
    100 	isrlink_autovec(ms_kbc_intr, (void *)sc, ipl, ISRPRI_TTY);
    101 
    102 	wsa.accessops = &ms_kbc_accessops;
    103 	wsa.accesscookie = sc;
    104 	sc->sc_wsmousedev = config_found(self, &wsa, wsmousedevprint);
    105 }
    106 
    107 void
    108 ms_kbc_init(sc)
    109 	struct ms_softc *sc;
    110 {
    111 	bus_space_tag_t bt = sc->sc_bt;
    112 	bus_space_handle_t bh = sc->sc_bh;
    113 
    114 	bus_space_write_1(bt, bh, KBC_MSREG_RESET, 0);
    115 	bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
    116 }
    117 
    118 int
    119 ms_kbc_intr(v)
    120 	void *v;
    121 {
    122 	struct ms_softc *sc = v;
    123 	bus_space_tag_t bt = sc->sc_bt;
    124 	bus_space_handle_t bh = sc->sc_bh;
    125 	int handled = 0;
    126 
    127 	while (bus_space_read_1(bt, bh, KBC_MSREG_STAT) & KBCSTAT_MSRDY) {
    128 		ms_intr(sc);
    129 		handled = 1;
    130 	}
    131 	if (handled)
    132 		bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
    133 
    134 	return handled;
    135 }
    136 
    137 int
    138 ms_kbc_enable(v)
    139 	void *v;
    140 {
    141 	struct ms_softc *sc = v;
    142 	bus_space_tag_t bt = sc->sc_bt;
    143 	bus_space_handle_t bh = sc->sc_bh;
    144 
    145 	bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
    146 
    147 	return 0;
    148 }
    149 
    150 void
    151 ms_kbc_disable(v)
    152 	void *v;
    153 {
    154 	struct ms_softc *sc = v;
    155 	bus_space_tag_t bt = sc->sc_bt;
    156 	bus_space_handle_t bh = sc->sc_bh;
    157 
    158 	bus_space_write_1(bt, bh, KBC_MSREG_INTE, 0);
    159 }
    160 
    161 int
    162 ms_kbc_ioctl(v, cmd, data, flag, p)
    163 	void *v;
    164 	u_long cmd;
    165 	caddr_t data;
    166 	int flag;
    167 	struct proc *p;
    168 {
    169 	return EPASSTHROUGH;
    170 }
    171