1 /* $NetBSD: m38813c.c,v 1.8 2002/10/02 05:26:45 thorpej 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_use_poll.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 49 #include <machine/bus.h> 50 #include <machine/intr.h> 51 52 #include <dev/hpc/hpckbdvar.h> 53 54 #include <hpcmips/tx/tx39var.h> 55 #include <hpcmips/tx/txcsbusvar.h> 56 #include <hpcmips/dev/m38813cvar.h> 57 58 struct m38813c_chip { 59 bus_space_tag_t scc_cst; 60 bus_space_handle_t scc_csh; 61 int scc_enabled; 62 int t_lastchar; 63 int t_extended; 64 int t_extended1; 65 66 struct hpckbd_ic_if scc_if; 67 struct hpckbd_if *scc_hpckbd; 68 }; 69 70 struct m38813c_softc { 71 struct device sc_dev; 72 struct m38813c_chip *sc_chip; 73 tx_chipset_tag_t sc_tc; 74 void *sc_ih; 75 }; 76 77 int m38813c_match(struct device *, struct cfdata *, void *); 78 void m38813c_attach(struct device *, struct device *, void *); 79 int m38813c_intr(void *); 80 int m38813c_poll(void *); 81 void m38813c_ifsetup(struct m38813c_chip *); 82 int m38813c_input_establish(void *, struct hpckbd_if *); 83 84 struct m38813c_chip m38813c_chip; 85 86 CFATTACH_DECL(m38813c, sizeof(struct m38813c_softc), 87 m38813c_match, m38813c_attach, NULL, NULL); 88 89 int 90 m38813c_match(struct device *parent, struct cfdata *cf, void *aux) 91 { 92 93 return (1); 94 } 95 96 void 97 m38813c_attach(struct device *parent, struct device *self, void *aux) 98 { 99 struct cs_attach_args *ca = aux; 100 struct m38813c_softc *sc = (void*)self; 101 struct hpckbd_attach_args haa; 102 103 sc->sc_tc = ca->ca_tc; 104 sc->sc_chip = &m38813c_chip; 105 sc->sc_chip->scc_cst = ca->ca_csio.cstag; 106 107 if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase, 108 ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) { 109 printf(": can't map i/o space\n"); 110 } 111 112 #ifndef USE_POLL 113 #error options USE_POLL requied. 114 #endif 115 if (!(sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, 116 IPL_TTY, m38813c_intr, 117 sc))) { 118 printf(": can't establish interrupt\n"); 119 } 120 121 printf("\n"); 122 123 /* setup upper interface */ 124 m38813c_ifsetup(sc->sc_chip); 125 126 haa.haa_ic = &sc->sc_chip->scc_if; 127 128 config_found(self, &haa, hpckbd_print); 129 } 130 131 void 132 m38813c_ifsetup(struct m38813c_chip *scc) 133 { 134 135 scc->scc_if.hii_ctx = scc; 136 137 scc->scc_if.hii_establish = m38813c_input_establish; 138 scc->scc_if.hii_poll = m38813c_intr; 139 } 140 141 int 142 m38813c_cnattach(paddr_t addr) 143 { 144 struct m38813c_chip *scc = &m38813c_chip; 145 146 scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); 147 148 m38813c_ifsetup(scc); 149 150 hpckbd_cnattach(&scc->scc_if); 151 152 return (0); 153 } 154 155 int 156 m38813c_input_establish(void *ic, struct hpckbd_if *kbdif) 157 { 158 struct m38813c_chip *scc = ic; 159 160 /* save lower interface */ 161 scc->scc_hpckbd = kbdif; 162 163 scc->scc_enabled = 1; 164 165 return (0); 166 } 167 168 #define KBR_EXTENDED0 0xE0 /* extended key sequence */ 169 #define KBR_EXTENDED1 0xE1 /* extended key sequence */ 170 171 int 172 m38813c_intr(void *arg) 173 { 174 struct m38813c_softc *sc = arg; 175 176 return (m38813c_poll(sc->sc_chip)); 177 } 178 179 int 180 m38813c_poll(void *arg) 181 { 182 struct m38813c_chip *scc = arg; 183 bus_space_tag_t t = scc->scc_cst; 184 bus_space_handle_t h = scc->scc_csh; 185 int datain, type, key; 186 187 if (!scc->scc_enabled) { 188 return (0); 189 } 190 191 datain= bus_space_read_1(t, h, 0); 192 193 hpckbd_input_hook(scc->scc_hpckbd); 194 195 if (datain == KBR_EXTENDED0) { 196 scc->t_extended = 1; 197 return (0); 198 } else if (datain == KBR_EXTENDED1) { 199 scc->t_extended1 = 2; 200 return (0); 201 } 202 203 /* map extended keys to (unused) codes 128-254 */ 204 key = (datain & 0x7f) | (scc->t_extended ? 0x80 : 0); 205 scc->t_extended = 0; 206 207 /* 208 * process BREAK key (EXT1 1D 45 EXT1 9D C5): 209 * map to (unused) code 7F 210 */ 211 if (scc->t_extended1 == 2 && (datain == 0x1d || datain == 0x9d)) { 212 scc->t_extended1 = 1; 213 return (0); 214 } else if (scc->t_extended1 == 1 && 215 (datain == 0x45 || datain == 0xc5)) { 216 scc->t_extended1 = 0; 217 key = 0x7f; 218 } else if (scc->t_extended1 > 0) { 219 scc->t_extended1 = 0; 220 } 221 222 if (datain & 0x80) { 223 scc->t_lastchar = 0; 224 type = 0; 225 } else { 226 /* Always ignore typematic keys */ 227 if (key == scc->t_lastchar) 228 return 0; 229 scc->t_lastchar = key; 230 type = 1; 231 } 232 233 hpckbd_input(scc->scc_hpckbd, type, key); 234 235 return (0); 236 } 237