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ms_hb.c revision 1.1.6.1 
      1 /*	$NetBSD: ms_hb.c,v 1.1.6.1 2002/06/23 17:38:44 jdolecek 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/bus.h>
     38 #include <machine/cpu.h>
     39 
     40 #include <news68k/dev/hbvar.h>
     41 #include <news68k/dev/ms_hbreg.h>
     42 #include <news68k/dev/msvar.h>
     43 
     44 #include <news68k/news68k/isr.h>
     45 
     46 #define MS_SIZE 0x10 /* XXX */
     47 #define MS_IPL 5
     48 
     49 int ms_hb_match(struct device *, struct cfdata *, void *);
     50 void ms_hb_attach(struct device *, struct device *, void *);
     51 void ms_hb_init(struct ms_softc *);
     52 int ms_hb_intr(void *);
     53 
     54 int ms_hb_enable(void *);
     55 int ms_hb_ioctl(void *, u_long, caddr_t, int, struct proc *);
     56 void ms_hb_disable(void *);
     57 
     58 struct cfattach ms_hb_ca = {
     59 	sizeof(struct ms_softc), ms_hb_match, ms_hb_attach
     60 };
     61 
     62 struct wsmouse_accessops ms_hb_accessops = {
     63 	ms_hb_enable,
     64 	ms_hb_ioctl,
     65 	ms_hb_disable
     66 };
     67 
     68 int
     69 ms_hb_match(parent, cf, aux)
     70 	struct device *parent;
     71 	struct cfdata *cf;
     72 	void *aux;
     73 {
     74 	struct hb_attach_args *ha = aux;
     75 	u_int addr;
     76 
     77 	if (strcmp(ha->ha_name, "ms"))
     78 		return 0;
     79 
     80 	/* XXX no default address */
     81 	if (ha->ha_address == -1)
     82 		return 0;
     83 
     84 	addr = IIOV(ha->ha_address); /* XXX */
     85 
     86 	if (badaddr((void *)addr, 1))
     87 		return 0;
     88 
     89 	return 1;
     90 }
     91 
     92 void
     93 ms_hb_attach(parent, self, aux)
     94 	struct device *parent;
     95 	struct device *self;
     96 	void *aux;
     97 {
     98 	struct ms_softc *sc = (void *)self;
     99 	struct hb_attach_args *ha = aux;
    100 	bus_space_tag_t bt = ha->ha_bust;
    101 	bus_space_handle_t bh;
    102 	struct wsmousedev_attach_args wsa;
    103 	int ipl;
    104 
    105 	if (bus_space_map(bt, ha->ha_address, MS_SIZE, 0, &bh) != 0) {
    106 		printf("can't map device space\n");
    107 		return;
    108 	}
    109 
    110 	printf("\n");
    111 
    112 	sc->sc_bt = bt;
    113 	sc->sc_bh = bh;
    114 	sc->sc_offset = MS_REG_DATA;
    115 	ipl = ha->ha_ipl;
    116 	if (ipl == -1)
    117 		ipl = MS_IPL;
    118 
    119 	ms_hb_init(sc);
    120 
    121 	isrlink_autovec(ms_hb_intr, (void *)sc, ipl, ISRPRI_TTY);
    122 
    123 	wsa.accessops = &ms_hb_accessops;
    124 	wsa.accesscookie = sc;
    125 	sc->sc_wsmousedev = config_found(self, &wsa, wsmousedevprint);
    126 }
    127 
    128 void
    129 ms_hb_init(sc)
    130 	struct ms_softc *sc;
    131 {
    132 	bus_space_tag_t bt = sc->sc_bt;
    133 	bus_space_handle_t bh = sc->sc_bh;
    134 
    135 	bus_space_write_1(bt, bh, MS_REG_RESET, 0);
    136 	bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
    137 }
    138 
    139 int
    140 ms_hb_intr(v)
    141 	void *v;
    142 {
    143 	struct ms_softc *sc = v;
    144 	bus_space_tag_t bt = sc->sc_bt;
    145 	bus_space_handle_t bh = sc->sc_bh;
    146 	int handled = 0;
    147 
    148 	while ((bus_space_read_1(bt, bh, MS_REG_STAT) & MSSTAT_RDY) != 0) {
    149 		ms_intr(sc);
    150 		handled = 1;
    151 	}
    152 	if (handled)
    153 		bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
    154 
    155 	return handled;
    156 }
    157 
    158 int
    159 ms_hb_enable(v)
    160 	void *v;
    161 {
    162 	struct ms_softc *sc = v;
    163 	bus_space_tag_t bt = sc->sc_bt;
    164 	bus_space_handle_t bh = sc->sc_bh;
    165 
    166 	bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
    167 
    168 	return 0;
    169 }
    170 
    171 void
    172 ms_hb_disable(v)
    173 	void *v;
    174 {
    175 	struct ms_softc *sc = v;
    176 	bus_space_tag_t bt = sc->sc_bt;
    177 	bus_space_handle_t bh = sc->sc_bh;
    178 
    179 	bus_space_write_1(bt, bh, MS_REG_INTE, 0);
    180 }
    181 
    182 int
    183 ms_hb_ioctl(v, cmd, data, flag, p)
    184 	void *v;
    185 	u_long cmd;
    186 	caddr_t data;
    187 	int flag;
    188 	struct proc *p;
    189 {
    190 	return EPASSTHROUGH;
    191 }
    192