1 /* $NetBSD: m38813c.c,v 1.5 2001/09/15 12:47:05 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2001 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 MITUBISHI M38813 controller 41 */ 42 43 #include "opt_tx39_debug.h" 44 #include "opt_use_poll.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/device.h> 49 50 #include <machine/bus.h> 51 #include <machine/intr.h> 52 53 #include <dev/hpc/hpckbdvar.h> 54 55 #include <hpcmips/tx/tx39var.h> 56 #include <hpcmips/tx/txcsbusvar.h> 57 #include <hpcmips/dev/m38813cvar.h> 58 59 struct m38813c_chip { 60 bus_space_tag_t scc_cst; 61 bus_space_handle_t scc_csh; 62 int scc_enabled; 63 int t_lastchar; 64 int t_extended; 65 int t_extended1; 66 67 struct hpckbd_ic_if scc_if; 68 struct hpckbd_if *scc_hpckbd; 69 }; 70 71 struct m38813c_softc { 72 struct device sc_dev; 73 struct m38813c_chip *sc_chip; 74 tx_chipset_tag_t sc_tc; 75 void *sc_ih; 76 }; 77 78 int m38813c_match(struct device *, struct cfdata *, void *); 79 void m38813c_attach(struct device *, struct device *, void *); 80 int m38813c_intr(void *); 81 int m38813c_poll(void *); 82 void m38813c_ifsetup(struct m38813c_chip *); 83 int m38813c_input_establish(void *, struct hpckbd_if *); 84 85 struct m38813c_chip m38813c_chip; 86 87 struct cfattach m38813c_ca = { 88 sizeof(struct m38813c_softc), m38813c_match, m38813c_attach 89 }; 90 91 int 92 m38813c_match(struct device *parent, struct cfdata *cf, void *aux) 93 { 94 95 return (1); 96 } 97 98 void 99 m38813c_attach(struct device *parent, struct device *self, void *aux) 100 { 101 struct cs_attach_args *ca = aux; 102 struct m38813c_softc *sc = (void*)self; 103 struct hpckbd_attach_args haa; 104 105 sc->sc_tc = ca->ca_tc; 106 sc->sc_chip = &m38813c_chip; 107 sc->sc_chip->scc_cst = ca->ca_csio.cstag; 108 109 if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase, 110 ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) { 111 printf(": can't map i/o space\n"); 112 } 113 114 #ifndef USE_POLL 115 #error options USE_POLL requied. 116 #endif 117 if (!(sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, 118 IPL_TTY, m38813c_intr, 119 sc))) { 120 printf(": can't establish interrupt\n"); 121 } 122 123 printf("\n"); 124 125 /* setup upper interface */ 126 m38813c_ifsetup(sc->sc_chip); 127 128 haa.haa_ic = &sc->sc_chip->scc_if; 129 130 config_found(self, &haa, hpckbd_print); 131 } 132 133 void 134 m38813c_ifsetup(struct m38813c_chip *scc) 135 { 136 137 scc->scc_if.hii_ctx = scc; 138 139 scc->scc_if.hii_establish = m38813c_input_establish; 140 scc->scc_if.hii_poll = m38813c_intr; 141 } 142 143 int 144 m38813c_cnattach(paddr_t addr) 145 { 146 struct m38813c_chip *scc = &m38813c_chip; 147 148 scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); 149 150 m38813c_ifsetup(scc); 151 152 hpckbd_cnattach(&scc->scc_if); 153 154 return (0); 155 } 156 157 int 158 m38813c_input_establish(void *ic, struct hpckbd_if *kbdif) 159 { 160 struct m38813c_chip *scc = ic; 161 162 /* save lower interface */ 163 scc->scc_hpckbd = kbdif; 164 165 scc->scc_enabled = 1; 166 167 return (0); 168 } 169 170 #define KBR_EXTENDED0 0xE0 /* extended key sequence */ 171 #define KBR_EXTENDED1 0xE1 /* extended key sequence */ 172 173 int 174 m38813c_intr(void *arg) 175 { 176 struct m38813c_softc *sc = arg; 177 178 return (m38813c_poll(sc->sc_chip)); 179 } 180 181 int 182 m38813c_poll(void *arg) 183 { 184 struct m38813c_chip *scc = arg; 185 bus_space_tag_t t = scc->scc_cst; 186 bus_space_handle_t h = scc->scc_csh; 187 int datain, type, key; 188 189 if (!scc->scc_enabled) { 190 return (0); 191 } 192 193 datain= bus_space_read_1(t, h, 0); 194 195 hpckbd_input_hook(scc->scc_hpckbd); 196 197 if (datain == KBR_EXTENDED0) { 198 scc->t_extended = 1; 199 return (0); 200 } else if (datain == KBR_EXTENDED1) { 201 scc->t_extended1 = 2; 202 return (0); 203 } 204 205 /* map extended keys to (unused) codes 128-254 */ 206 key = (datain & 0x7f) | (scc->t_extended ? 0x80 : 0); 207 scc->t_extended = 0; 208 209 /* 210 * process BREAK key (EXT1 1D 45 EXT1 9D C5): 211 * map to (unused) code 7F 212 */ 213 if (scc->t_extended1 == 2 && (datain == 0x1d || datain == 0x9d)) { 214 scc->t_extended1 = 1; 215 return (0); 216 } else if (scc->t_extended1 == 1 && 217 (datain == 0x45 || datain == 0xc5)) { 218 scc->t_extended1 = 0; 219 key = 0x7f; 220 } else if (scc->t_extended1 > 0) { 221 scc->t_extended1 = 0; 222 } 223 224 if (datain & 0x80) { 225 scc->t_lastchar = 0; 226 type = 0; 227 } else { 228 /* Always ignore typematic keys */ 229 if (key == scc->t_lastchar) 230 return 0; 231 scc->t_lastchar = key; 232 type = 1; 233 } 234 235 hpckbd_input(scc->scc_hpckbd, type, key); 236 237 return (0); 238 } 239