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ucbio.c revision 1.5
      1 /*	$NetBSD: ucbio.c,v 1.5 2002/01/29 18:53:12 uch Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Device driver for PHILIPS UCB1200 Advanced modem/audio analog front-end
     41  *	General Purpose I/O part.
     42  */
     43 
     44 #include <sys/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/device.h>
     47 
     48 #include <machine/bus.h>
     49 #include <machine/intr.h>
     50 
     51 #include <hpcmips/tx/tx39var.h>
     52 #include <hpcmips/tx/tx39sibvar.h>
     53 #include <hpcmips/tx/tx39sibreg.h>
     54 
     55 #include <hpcmips/dev/ucb1200var.h>
     56 #include <hpcmips/dev/ucb1200reg.h>
     57 
     58 #include <dev/hpc/hpciovar.h>	/* I/O manager */
     59 
     60 #include <machine/debug.h>
     61 
     62 int ucbio_match(struct device*, struct cfdata *, void *);
     63 void ucbio_attach(struct device*, struct device *, void *);
     64 
     65 struct betty_port_status {
     66 	u_int16_t dir;
     67 	u_int16_t in, out;
     68 };
     69 
     70 struct ucbio_softc {
     71 	struct device sc_dev;
     72 	tx_chipset_tag_t sc_tc;
     73 
     74 	struct betty_port_status sc_stat, sc_ostat;
     75 	struct hpcio_chip sc_hc;
     76 };
     77 
     78 struct cfattach ucbio_ca = {
     79 	sizeof(struct ucbio_softc), ucbio_match, ucbio_attach
     80 };
     81 
     82 /* I/O */
     83 static int betty_in(hpcio_chip_t, int);
     84 static void betty_out(hpcio_chip_t, int, int);
     85 /* interrupt */
     86 static hpcio_intr_handle_t betty_intr_establish(hpcio_chip_t, int, int,
     87     int (*)(void *), void *);
     88 static void betty_intr_disestablish(hpcio_chip_t, void *);
     89 /* debug */
     90 static void betty_update(hpcio_chip_t);
     91 static void betty_dump(hpcio_chip_t);
     92 
     93 int
     94 ucbio_match(struct device *parent, struct cfdata *cf, void *aux)
     95 {
     96 	return (1);
     97 }
     98 
     99 void
    100 ucbio_attach(struct device *parent, struct device *self, void *aux)
    101 {
    102 	struct ucb1200_attach_args *ucba = aux;
    103 	struct ucbio_softc *sc = (void *)self;
    104 	struct hpcio_chip *hc = &sc->sc_hc;
    105 
    106 	sc->sc_tc = ucba->ucba_tc;
    107 	printf("\n");
    108 
    109 	hc->hc_sc		 = sc;
    110 	hc->hc_chipid		 = 2;
    111 	hc->hc_name		 = "UCB1200";
    112 	hc->hc_portread		 = betty_in;
    113 	hc->hc_portwrite	 = betty_out;
    114 	hc->hc_intr_establish	 = betty_intr_establish;
    115 	hc->hc_intr_disestablish = betty_intr_disestablish;
    116 	hc->hc_update		 = betty_update;
    117 	hc->hc_dump		 = betty_dump;
    118 
    119 	tx_conf_register_ioman(sc->sc_tc, hc);
    120 
    121 	hpcio_update(hc);
    122 	hpcio_dump(hc);
    123 }
    124 
    125 /* basic I/O */
    126 static void
    127 betty_out(hpcio_chip_t hc, int port, int onoff)
    128 {
    129 	struct ucbio_softc *sc = hc->hc_sc;
    130 	tx_chipset_tag_t tc = sc->sc_tc;
    131 	txreg_t reg, pos;
    132 
    133 	pos = 1 << port;
    134 	reg = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG);
    135 	if (onoff)
    136 		reg |= pos;
    137 	else
    138 		reg &= ~pos;
    139 	txsibsf0_reg_write(tc, UCB1200_IO_DATA_REG, reg);
    140 }
    141 
    142 static int
    143 betty_in(hpcio_chip_t hc, int port)
    144 {
    145 	struct ucbio_softc *sc = hc->hc_sc;
    146 	tx_chipset_tag_t tc = sc->sc_tc;
    147 	txreg_t reg = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG);
    148 
    149 	return (reg & (1 << port));
    150 }
    151 
    152 /* interrupt method not implemented */
    153 static hpcio_intr_handle_t
    154 betty_intr_establish(hpcio_chip_t hc, int port, int mode, int (*func)(void *),
    155     void *func_arg)
    156 {
    157 	struct ucbio_softc *sc = hc->hc_sc;
    158 
    159 	printf("%s: %s not implemented.\n", sc->sc_dev.dv_xname,
    160 	    __FUNCTION__);
    161 
    162 	return (0);
    163 }
    164 
    165 static void
    166 betty_intr_disestablish(hpcio_chip_t hc, void *ih)
    167 {
    168 	struct ucbio_softc *sc = hc->hc_sc;
    169 
    170 	printf("%s: %s not implemented.\n", sc->sc_dev.dv_xname,
    171 	    __FUNCTION__);
    172 }
    173 
    174 /* debug */
    175 static void
    176 betty_update(hpcio_chip_t hc)
    177 {
    178 	struct ucbio_softc *sc = hc->hc_sc;
    179 	tx_chipset_tag_t tc = sc->sc_tc;
    180 	struct betty_port_status *stat = &sc->sc_stat;
    181 	u_int16_t dir, data;
    182 
    183 	sc->sc_ostat = *stat; /* save old status */
    184 	dir = stat->dir = txsibsf0_reg_read(tc, UCB1200_IO_DIR_REG);
    185 	data = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG);
    186 	stat->out = data & dir;
    187 	stat->in = data & ~dir;
    188 }
    189 
    190 static void
    191 betty_dump(hpcio_chip_t hc)
    192 {
    193 #ifdef UCBIO_DEBUG
    194 	struct ucbio_softc *sc = hc->hc_sc;
    195 	struct betty_port_status *stat = &sc->sc_stat;
    196 
    197 	printf("[BETTY I/O]\n");
    198 	printf("IN  ");
    199 	dbg_bit_print(stat->in);
    200 	printf("OUT ");
    201 	dbg_bit_print(stat->out);
    202 	printf("DIR ");
    203 	dbg_bit_print(stat->dir);
    204 #endif /* UCBIO_DEBUG */
    205 }
    206