1 /* $NetBSD: m38813c.c,v 1.9 2003/07/15 02:29:29 lukem 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 <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: m38813c.c,v 1.9 2003/07/15 02:29:29 lukem Exp $"); 45 46 #include "opt_use_poll.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 52 #include <machine/bus.h> 53 #include <machine/intr.h> 54 55 #include <dev/hpc/hpckbdvar.h> 56 57 #include <hpcmips/tx/tx39var.h> 58 #include <hpcmips/tx/txcsbusvar.h> 59 #include <hpcmips/dev/m38813cvar.h> 60 61 struct m38813c_chip { 62 bus_space_tag_t scc_cst; 63 bus_space_handle_t scc_csh; 64 int scc_enabled; 65 int t_lastchar; 66 int t_extended; 67 int t_extended1; 68 69 struct hpckbd_ic_if scc_if; 70 struct hpckbd_if *scc_hpckbd; 71 }; 72 73 struct m38813c_softc { 74 struct device sc_dev; 75 struct m38813c_chip *sc_chip; 76 tx_chipset_tag_t sc_tc; 77 void *sc_ih; 78 }; 79 80 int m38813c_match(struct device *, struct cfdata *, void *); 81 void m38813c_attach(struct device *, struct device *, void *); 82 int m38813c_intr(void *); 83 int m38813c_poll(void *); 84 void m38813c_ifsetup(struct m38813c_chip *); 85 int m38813c_input_establish(void *, struct hpckbd_if *); 86 87 struct m38813c_chip m38813c_chip; 88 89 CFATTACH_DECL(m38813c, sizeof(struct m38813c_softc), 90 m38813c_match, m38813c_attach, NULL, NULL); 91 92 int 93 m38813c_match(struct device *parent, struct cfdata *cf, void *aux) 94 { 95 96 return (1); 97 } 98 99 void 100 m38813c_attach(struct device *parent, struct device *self, void *aux) 101 { 102 struct cs_attach_args *ca = aux; 103 struct m38813c_softc *sc = (void*)self; 104 struct hpckbd_attach_args haa; 105 106 sc->sc_tc = ca->ca_tc; 107 sc->sc_chip = &m38813c_chip; 108 sc->sc_chip->scc_cst = ca->ca_csio.cstag; 109 110 if (bus_space_map(sc->sc_chip->scc_cst, ca->ca_csio.csbase, 111 ca->ca_csio.cssize, 0, &sc->sc_chip->scc_csh)) { 112 printf(": can't map i/o space\n"); 113 } 114 115 #ifndef USE_POLL 116 #error options USE_POLL requied. 117 #endif 118 if (!(sc->sc_ih = tx39_poll_establish(sc->sc_tc, 1, 119 IPL_TTY, m38813c_intr, 120 sc))) { 121 printf(": can't establish interrupt\n"); 122 } 123 124 printf("\n"); 125 126 /* setup upper interface */ 127 m38813c_ifsetup(sc->sc_chip); 128 129 haa.haa_ic = &sc->sc_chip->scc_if; 130 131 config_found(self, &haa, hpckbd_print); 132 } 133 134 void 135 m38813c_ifsetup(struct m38813c_chip *scc) 136 { 137 138 scc->scc_if.hii_ctx = scc; 139 140 scc->scc_if.hii_establish = m38813c_input_establish; 141 scc->scc_if.hii_poll = m38813c_intr; 142 } 143 144 int 145 m38813c_cnattach(paddr_t addr) 146 { 147 struct m38813c_chip *scc = &m38813c_chip; 148 149 scc->scc_csh = MIPS_PHYS_TO_KSEG1(addr); 150 151 m38813c_ifsetup(scc); 152 153 hpckbd_cnattach(&scc->scc_if); 154 155 return (0); 156 } 157 158 int 159 m38813c_input_establish(void *ic, struct hpckbd_if *kbdif) 160 { 161 struct m38813c_chip *scc = ic; 162 163 /* save lower interface */ 164 scc->scc_hpckbd = kbdif; 165 166 scc->scc_enabled = 1; 167 168 return (0); 169 } 170 171 #define KBR_EXTENDED0 0xE0 /* extended key sequence */ 172 #define KBR_EXTENDED1 0xE1 /* extended key sequence */ 173 174 int 175 m38813c_intr(void *arg) 176 { 177 struct m38813c_softc *sc = arg; 178 179 return (m38813c_poll(sc->sc_chip)); 180 } 181 182 int 183 m38813c_poll(void *arg) 184 { 185 struct m38813c_chip *scc = arg; 186 bus_space_tag_t t = scc->scc_cst; 187 bus_space_handle_t h = scc->scc_csh; 188 int datain, type, key; 189 190 if (!scc->scc_enabled) { 191 return (0); 192 } 193 194 datain= bus_space_read_1(t, h, 0); 195 196 hpckbd_input_hook(scc->scc_hpckbd); 197 198 if (datain == KBR_EXTENDED0) { 199 scc->t_extended = 1; 200 return (0); 201 } else if (datain == KBR_EXTENDED1) { 202 scc->t_extended1 = 2; 203 return (0); 204 } 205 206 /* map extended keys to (unused) codes 128-254 */ 207 key = (datain & 0x7f) | (scc->t_extended ? 0x80 : 0); 208 scc->t_extended = 0; 209 210 /* 211 * process BREAK key (EXT1 1D 45 EXT1 9D C5): 212 * map to (unused) code 7F 213 */ 214 if (scc->t_extended1 == 2 && (datain == 0x1d || datain == 0x9d)) { 215 scc->t_extended1 = 1; 216 return (0); 217 } else if (scc->t_extended1 == 1 && 218 (datain == 0x45 || datain == 0xc5)) { 219 scc->t_extended1 = 0; 220 key = 0x7f; 221 } else if (scc->t_extended1 > 0) { 222 scc->t_extended1 = 0; 223 } 224 225 if (datain & 0x80) { 226 scc->t_lastchar = 0; 227 type = 0; 228 } else { 229 /* Always ignore typematic keys */ 230 if (key == scc->t_lastchar) 231 return 0; 232 scc->t_lastchar = key; 233 type = 1; 234 } 235 236 hpckbd_input(scc->scc_hpckbd, type, key); 237 238 return (0); 239 } 240