1 /* $NetBSD: ucbio.c,v 1.11 2008/04/28 20:23:21 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Device driver for PHILIPS UCB1200 Advanced modem/audio analog front-end 34 * General Purpose I/O part. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: ucbio.c,v 1.11 2008/04/28 20:23:21 martin Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <machine/bus.h> 45 #include <machine/intr.h> 46 47 #include <hpcmips/tx/tx39var.h> 48 #include <hpcmips/tx/tx39sibvar.h> 49 #include <hpcmips/tx/tx39sibreg.h> 50 51 #include <hpcmips/dev/ucb1200var.h> 52 #include <hpcmips/dev/ucb1200reg.h> 53 54 #include <dev/hpc/hpciovar.h> /* I/O manager */ 55 56 #include <machine/debug.h> 57 58 int ucbio_match(struct device*, struct cfdata *, void *); 59 void ucbio_attach(struct device*, struct device *, void *); 60 61 struct betty_port_status { 62 u_int16_t dir; 63 u_int16_t in, out; 64 }; 65 66 struct ucbio_softc { 67 struct device sc_dev; 68 tx_chipset_tag_t sc_tc; 69 70 struct betty_port_status sc_stat, sc_ostat; 71 struct hpcio_chip sc_hc; 72 }; 73 74 CFATTACH_DECL(ucbio, sizeof(struct ucbio_softc), 75 ucbio_match, ucbio_attach, NULL, NULL); 76 77 /* I/O */ 78 static int betty_in(hpcio_chip_t, int); 79 static void betty_out(hpcio_chip_t, int, int); 80 /* interrupt */ 81 static hpcio_intr_handle_t betty_intr_establish(hpcio_chip_t, int, int, 82 int (*)(void *), void *); 83 static void betty_intr_disestablish(hpcio_chip_t, void *); 84 /* debug */ 85 static void betty_update(hpcio_chip_t); 86 static void betty_dump(hpcio_chip_t); 87 88 int 89 ucbio_match(struct device *parent, struct cfdata *cf, void *aux) 90 { 91 return (1); 92 } 93 94 void 95 ucbio_attach(struct device *parent, struct device *self, void *aux) 96 { 97 struct ucb1200_attach_args *ucba = aux; 98 struct ucbio_softc *sc = (void *)self; 99 struct hpcio_chip *hc = &sc->sc_hc; 100 101 sc->sc_tc = ucba->ucba_tc; 102 printf("\n"); 103 104 hc->hc_sc = sc; 105 hc->hc_chipid = 2; 106 hc->hc_name = "UCB1200"; 107 hc->hc_portread = betty_in; 108 hc->hc_portwrite = betty_out; 109 hc->hc_intr_establish = betty_intr_establish; 110 hc->hc_intr_disestablish = betty_intr_disestablish; 111 hc->hc_update = betty_update; 112 hc->hc_dump = betty_dump; 113 114 tx_conf_register_ioman(sc->sc_tc, hc); 115 116 hpcio_update(hc); 117 hpcio_dump(hc); 118 } 119 120 /* basic I/O */ 121 static void 122 betty_out(hpcio_chip_t hc, int port, int onoff) 123 { 124 struct ucbio_softc *sc = hc->hc_sc; 125 tx_chipset_tag_t tc = sc->sc_tc; 126 txreg_t reg, pos; 127 128 pos = 1 << port; 129 reg = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG); 130 if (onoff) 131 reg |= pos; 132 else 133 reg &= ~pos; 134 txsibsf0_reg_write(tc, UCB1200_IO_DATA_REG, reg); 135 } 136 137 static int 138 betty_in(hpcio_chip_t hc, int port) 139 { 140 struct ucbio_softc *sc = hc->hc_sc; 141 tx_chipset_tag_t tc = sc->sc_tc; 142 txreg_t reg = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG); 143 144 return (reg & (1 << port)); 145 } 146 147 /* interrupt method not implemented */ 148 static hpcio_intr_handle_t 149 betty_intr_establish(hpcio_chip_t hc, int port, int mode, int (*func)(void *), 150 void *func_arg) 151 { 152 struct ucbio_softc *sc = hc->hc_sc; 153 154 printf("%s: %s not implemented.\n", sc->sc_dev.dv_xname, 155 __func__); 156 157 return (0); 158 } 159 160 static void 161 betty_intr_disestablish(hpcio_chip_t hc, void *ih) 162 { 163 struct ucbio_softc *sc = hc->hc_sc; 164 165 printf("%s: %s not implemented.\n", sc->sc_dev.dv_xname, 166 __func__); 167 } 168 169 /* debug */ 170 static void 171 betty_update(hpcio_chip_t hc) 172 { 173 struct ucbio_softc *sc = hc->hc_sc; 174 tx_chipset_tag_t tc = sc->sc_tc; 175 struct betty_port_status *stat = &sc->sc_stat; 176 u_int16_t dir, data; 177 178 sc->sc_ostat = *stat; /* save old status */ 179 dir = stat->dir = txsibsf0_reg_read(tc, UCB1200_IO_DIR_REG); 180 data = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG); 181 stat->out = data & dir; 182 stat->in = data & ~dir; 183 } 184 185 static void 186 betty_dump(hpcio_chip_t hc) 187 { 188 #ifdef UCBIO_DEBUG 189 struct ucbio_softc *sc = hc->hc_sc; 190 struct betty_port_status *stat = &sc->sc_stat; 191 192 printf("[BETTY I/O]\n"); 193 printf("IN "); 194 dbg_bit_print(stat->in); 195 printf("OUT "); 196 dbg_bit_print(stat->out); 197 printf("DIR "); 198 dbg_bit_print(stat->dir); 199 #endif /* UCBIO_DEBUG */ 200 } 201