clmpcc_pcctwo.c revision 1.2
1 /* $NetBSD: clmpcc_pcctwo.c,v 1.2 2002/09/06 13:18:43 gehenna Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 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 * Cirrus Logic CD2401 4-channel serial chip. PCCchip2 Front-end. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/proc.h> 46 #include <sys/device.h> 47 #include <sys/conf.h> 48 #include <sys/file.h> 49 #include <sys/ioctl.h> 50 #include <sys/tty.h> 51 #include <sys/time.h> 52 #include <sys/kernel.h> 53 #include <sys/syslog.h> 54 55 #include <dev/cons.h> 56 57 #include <machine/cpu.h> 58 #include <machine/bus.h> 59 #include <machine/intr.h> 60 61 #include <dev/ic/clmpccvar.h> 62 63 #include <dev/mvme/pcctwovar.h> 64 #include <dev/mvme/pcctworeg.h> 65 66 /* XXXXSCW: Fixme */ 67 #ifdef MVME68K 68 #include <mvme68k/dev/mainbus.h> 69 #else 70 #error Need consiack hook 71 #endif 72 73 74 /* Definition of the driver for autoconfig. */ 75 int clmpcc_pcctwo_match __P((struct device *, struct cfdata *, void *)); 76 void clmpcc_pcctwo_attach __P((struct device *, struct device *, void *)); 77 void clmpcc_pcctwo_iackhook __P((struct clmpcc_softc *, int)); 78 void clmpcc_pcctwo_consiackhook __P((struct clmpcc_softc *, int)); 79 80 struct cfattach clmpcc_pcctwo_ca = { 81 sizeof(struct clmpcc_softc), clmpcc_pcctwo_match, clmpcc_pcctwo_attach 82 }; 83 84 extern struct cfdriver clmpcc_cd; 85 86 extern const struct cdevsw clmpcc_cdevsw; 87 88 /* 89 * For clmpcccn*() 90 */ 91 cons_decl(clmpcc); 92 93 94 /* 95 * Is the CD2401 chip present? 96 */ 97 int 98 clmpcc_pcctwo_match(parent, cf, aux) 99 struct device *parent; 100 struct cfdata *cf; 101 void *aux; 102 { 103 struct pcctwo_attach_args *pa; 104 105 pa = aux; 106 107 if (strcmp(pa->pa_name, clmpcc_cd.cd_name)) 108 return (0); 109 110 pa->pa_ipl = cf->pcctwocf_ipl; 111 112 return (1); 113 } 114 115 /* 116 * Attach a found CD2401. 117 */ 118 void 119 clmpcc_pcctwo_attach(parent, self, aux) 120 struct device *parent; 121 struct device *self; 122 void *aux; 123 { 124 struct clmpcc_softc *sc; 125 struct pcctwo_attach_args *pa; 126 int level = pa->pa_ipl; 127 128 sc = (struct clmpcc_softc *)self; 129 pa = aux; 130 level = pa->pa_ipl; 131 sc->sc_iot = pa->pa_bust; 132 bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh); 133 134 sc->sc_clk = 20000000; 135 sc->sc_byteswap = CLMPCC_BYTESWAP_LOW; 136 sc->sc_swaprtsdtr = 1; 137 sc->sc_iackhook = clmpcc_pcctwo_iackhook; 138 sc->sc_vector_base = PCCTWO_SCC_VECBASE; 139 sc->sc_rpilr = 0x03; 140 sc->sc_tpilr = 0x02; 141 sc->sc_mpilr = 0x01; 142 sc->sc_evcnt = pcctwointr_evcnt(level); 143 144 /* Do common parts of CD2401 configuration. */ 145 clmpcc_attach(sc); 146 147 /* Hook the interrupts */ 148 pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL); 149 pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc, 150 NULL); 151 pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL); 152 pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL); 153 } 154 155 void 156 clmpcc_pcctwo_iackhook(sc, which) 157 struct clmpcc_softc *sc; 158 int which; 159 { 160 bus_size_t offset; 161 volatile u_char foo; 162 163 switch (which) { 164 case CLMPCC_IACK_MODEM: 165 offset = PCC2REG_SCC_MODEM_PIACK; 166 break; 167 168 case CLMPCC_IACK_RX: 169 offset = PCC2REG_SCC_RX_PIACK; 170 break; 171 172 case CLMPCC_IACK_TX: 173 offset = PCC2REG_SCC_TX_PIACK; 174 break; 175 #ifdef DEBUG 176 default: 177 printf("%s: Invalid IACK number '%d'\n", 178 sc->sc_dev.dv_xname, which); 179 panic("clmpcc_pcctwo_iackhook"); 180 #endif 181 } 182 183 foo = pcc2_reg_read(sys_pcctwo, offset); 184 } 185 186 /* 187 * This routine is only used prior to clmpcc_attach() being called 188 */ 189 void 190 clmpcc_pcctwo_consiackhook(sc, which) 191 struct clmpcc_softc *sc; 192 int which; 193 { 194 bus_space_handle_t bush; 195 bus_size_t offset; 196 volatile u_char foo; 197 198 switch (which) { 199 case CLMPCC_IACK_MODEM: 200 offset = PCC2REG_SCC_MODEM_PIACK; 201 break; 202 203 case CLMPCC_IACK_RX: 204 offset = PCC2REG_SCC_RX_PIACK; 205 break; 206 207 case CLMPCC_IACK_TX: 208 offset = PCC2REG_SCC_TX_PIACK; 209 break; 210 #ifdef DEBUG 211 default: 212 printf("%s: Invalid IACK number '%d'\n", 213 sc->sc_dev.dv_xname, which); 214 panic("clmpcc_pcctwo_consiackhook"); 215 #endif 216 } 217 218 #ifdef MVME68K 219 /* 220 * We need to fake the tag and handle since 'sys_pcctwo' will 221 * be NULL during early system startup... 222 */ 223 bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET + 224 PCCTWO_REG_OFF]); 225 226 foo = bus_space_read_1(&_mainbus_space_tag, bush, offset); 227 #else 228 #error Need consiack hook 229 #endif 230 } 231 232 233 /**************************************************************** 234 * Console support functions (MVME PCCchip2 specific!) 235 ****************************************************************/ 236 237 /* 238 * Check for CD2401 console. 239 */ 240 void 241 clmpcccnprobe(cp) 242 struct consdev *cp; 243 { 244 int maj; 245 246 #if defined(MVME68K) 247 if (machineid != MVME_167 && machineid != MVME_177) 248 #elif defined(MVME88K) 249 if (machineid != MVME_187) 250 #endif 251 { 252 cp->cn_pri = CN_DEAD; 253 return; 254 } 255 256 /* 257 * Locate the major number 258 */ 259 maj = cdevsw_lookup_major(&clmpcc_cdevsw); 260 261 /* Initialize required fields. */ 262 cp->cn_dev = makedev(maj, 0); 263 cp->cn_pri = CN_NORMAL; 264 } 265 266 void 267 clmpcccninit(cp) 268 struct consdev *cp; 269 { 270 static struct clmpcc_softc cons_sc; 271 272 cons_sc.sc_iot = &_mainbus_space_tag; 273 bus_space_map(&_mainbus_space_tag, 274 intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF, 275 PCC2REG_SIZE, 0, &cons_sc.sc_ioh); 276 cons_sc.sc_clk = 20000000; 277 cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW; 278 cons_sc.sc_swaprtsdtr = 1; 279 cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook; 280 cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE; 281 cons_sc.sc_rpilr = 0x03; 282 cons_sc.sc_tpilr = 0x02; 283 cons_sc.sc_mpilr = 0x01; 284 285 clmpcc_cnattach(&cons_sc, 0, 9600); 286 } 287
Indexes created Thu Oct 02 14:10:14 GMT 2025