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ms_hb.c revision 1.1.10.2 
      1 /*	$NetBSD: ms_hb.c,v 1.1.10.2 2002/10/18 02:39:07 nathanw 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 CFATTACH_DECL(ms_hb, sizeof(struct ms_softc),
     59     ms_hb_match, ms_hb_attach, NULL, NULL);
     60 
     61 struct wsmouse_accessops ms_hb_accessops = {
     62 	ms_hb_enable,
     63 	ms_hb_ioctl,
     64 	ms_hb_disable
     65 };
     66 
     67 int
     68 ms_hb_match(parent, cf, aux)
     69 	struct device *parent;
     70 	struct cfdata *cf;
     71 	void *aux;
     72 {
     73 	struct hb_attach_args *ha = aux;
     74 	u_int addr;
     75 
     76 	if (strcmp(ha->ha_name, "ms"))
     77 		return 0;
     78 
     79 	/* XXX no default address */
     80 	if (ha->ha_address == -1)
     81 		return 0;
     82 
     83 	addr = IIOV(ha->ha_address); /* XXX */
     84 
     85 	if (badaddr((void *)addr, 1))
     86 		return 0;
     87 
     88 	return 1;
     89 }
     90 
     91 void
     92 ms_hb_attach(parent, self, aux)
     93 	struct device *parent;
     94 	struct device *self;
     95 	void *aux;
     96 {
     97 	struct ms_softc *sc = (void *)self;
     98 	struct hb_attach_args *ha = aux;
     99 	bus_space_tag_t bt = ha->ha_bust;
    100 	bus_space_handle_t bh;
    101 	struct wsmousedev_attach_args wsa;
    102 	int ipl;
    103 
    104 	if (bus_space_map(bt, ha->ha_address, MS_SIZE, 0, &bh) != 0) {
    105 		printf("can't map device space\n");
    106 		return;
    107 	}
    108 
    109 	printf("\n");
    110 
    111 	sc->sc_bt = bt;
    112 	sc->sc_bh = bh;
    113 	sc->sc_offset = MS_REG_DATA;
    114 	ipl = ha->ha_ipl;
    115 	if (ipl == -1)
    116 		ipl = MS_IPL;
    117 
    118 	ms_hb_init(sc);
    119 
    120 	isrlink_autovec(ms_hb_intr, (void *)sc, ipl, ISRPRI_TTY);
    121 
    122 	wsa.accessops = &ms_hb_accessops;
    123 	wsa.accesscookie = sc;
    124 	sc->sc_wsmousedev = config_found(self, &wsa, wsmousedevprint);
    125 }
    126 
    127 void
    128 ms_hb_init(sc)
    129 	struct ms_softc *sc;
    130 {
    131 	bus_space_tag_t bt = sc->sc_bt;
    132 	bus_space_handle_t bh = sc->sc_bh;
    133 
    134 	bus_space_write_1(bt, bh, MS_REG_RESET, 0);
    135 	bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
    136 }
    137 
    138 int
    139 ms_hb_intr(v)
    140 	void *v;
    141 {
    142 	struct ms_softc *sc = v;
    143 	bus_space_tag_t bt = sc->sc_bt;
    144 	bus_space_handle_t bh = sc->sc_bh;
    145 	int handled = 0;
    146 
    147 	while ((bus_space_read_1(bt, bh, MS_REG_STAT) & MSSTAT_RDY) != 0) {
    148 		ms_intr(sc);
    149 		handled = 1;
    150 	}
    151 	if (handled)
    152 		bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
    153 
    154 	return handled;
    155 }
    156 
    157 int
    158 ms_hb_enable(v)
    159 	void *v;
    160 {
    161 	struct ms_softc *sc = v;
    162 	bus_space_tag_t bt = sc->sc_bt;
    163 	bus_space_handle_t bh = sc->sc_bh;
    164 
    165 	bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
    166 
    167 	return 0;
    168 }
    169 
    170 void
    171 ms_hb_disable(v)
    172 	void *v;
    173 {
    174 	struct ms_softc *sc = v;
    175 	bus_space_tag_t bt = sc->sc_bt;
    176 	bus_space_handle_t bh = sc->sc_bh;
    177 
    178 	bus_space_write_1(bt, bh, MS_REG_INTE, 0);
    179 }
    180 
    181 int
    182 ms_hb_ioctl(v, cmd, data, flag, p)
    183 	void *v;
    184 	u_long cmd;
    185 	caddr_t data;
    186 	int flag;
    187 	struct proc *p;
    188 {
    189 	return EPASSTHROUGH;
    190 }
    191