clmpcc_pcctwo.c revision 1.14
1 /* $NetBSD: clmpcc_pcctwo.c,v 1.14 2008/04/08 20:42:21 cegger 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/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: clmpcc_pcctwo.c,v 1.14 2008/04/08 20:42:21 cegger Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/proc.h> 49 #include <sys/device.h> 50 #include <sys/conf.h> 51 #include <sys/file.h> 52 #include <sys/ioctl.h> 53 #include <sys/tty.h> 54 #include <sys/time.h> 55 #include <sys/kernel.h> 56 #include <sys/syslog.h> 57 58 #include <dev/cons.h> 59 60 #include <sys/cpu.h> 61 #include <sys/bus.h> 62 #include <sys/intr.h> 63 64 #include <dev/ic/clmpccvar.h> 65 66 #include <dev/mvme/pcctwovar.h> 67 #include <dev/mvme/pcctworeg.h> 68 69 /* XXXXSCW: Fixme */ 70 #ifdef MVME68K 71 #include <mvme68k/dev/mainbus.h> 72 #else 73 #error Need consiack hook 74 #endif 75 76 77 /* Definition of the driver for autoconfig. */ 78 int clmpcc_pcctwo_match(struct device *, struct cfdata *, void *); 79 void clmpcc_pcctwo_attach(struct device *, struct device *, void *); 80 void clmpcc_pcctwo_iackhook(struct clmpcc_softc *, int); 81 void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *, int); 82 83 CFATTACH_DECL(clmpcc_pcctwo, sizeof(struct clmpcc_softc), 84 clmpcc_pcctwo_match, clmpcc_pcctwo_attach, NULL, NULL); 85 86 extern struct cfdriver clmpcc_cd; 87 88 extern const struct cdevsw clmpcc_cdevsw; 89 90 /* 91 * For clmpcccn*() 92 */ 93 cons_decl(clmpcc); 94 95 96 /* 97 * Is the CD2401 chip present? 98 */ 99 int 100 clmpcc_pcctwo_match(parent, cf, aux) 101 struct device *parent; 102 struct cfdata *cf; 103 void *aux; 104 { 105 struct pcctwo_attach_args *pa; 106 107 pa = aux; 108 109 if (strcmp(pa->pa_name, clmpcc_cd.cd_name)) 110 return (0); 111 112 pa->pa_ipl = cf->pcctwocf_ipl; 113 114 return (1); 115 } 116 117 /* 118 * Attach a found CD2401. 119 */ 120 void 121 clmpcc_pcctwo_attach(parent, self, aux) 122 struct device *parent; 123 struct device *self; 124 void *aux; 125 { 126 struct clmpcc_softc *sc; 127 struct pcctwo_attach_args *pa = aux; 128 int level = pa->pa_ipl; 129 130 sc = device_private(self); 131 level = pa->pa_ipl; 132 sc->sc_iot = pa->pa_bust; 133 bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh); 134 135 sc->sc_clk = 20000000; 136 sc->sc_byteswap = CLMPCC_BYTESWAP_LOW; 137 sc->sc_swaprtsdtr = 1; 138 sc->sc_iackhook = clmpcc_pcctwo_iackhook; 139 sc->sc_vector_base = PCCTWO_SCC_VECBASE; 140 sc->sc_rpilr = 0x03; 141 sc->sc_tpilr = 0x02; 142 sc->sc_mpilr = 0x01; 143 sc->sc_evcnt = pcctwointr_evcnt(level); 144 145 /* Do common parts of CD2401 configuration. */ 146 clmpcc_attach(sc); 147 148 /* Hook the interrupts */ 149 pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL); 150 pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc, 151 NULL); 152 pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL); 153 pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL); 154 } 155 156 void 157 clmpcc_pcctwo_iackhook(sc, which) 158 struct clmpcc_softc *sc; 159 int which; 160 { 161 bus_size_t offset; 162 volatile u_char foo; 163 164 switch (which) { 165 case CLMPCC_IACK_MODEM: 166 offset = PCC2REG_SCC_MODEM_PIACK; 167 break; 168 169 case CLMPCC_IACK_RX: 170 offset = PCC2REG_SCC_RX_PIACK; 171 break; 172 173 case CLMPCC_IACK_TX: 174 offset = PCC2REG_SCC_TX_PIACK; 175 break; 176 default: 177 #ifdef DEBUG 178 printf("%s: Invalid IACK number '%d'\n", 179 device_xname(&sc->sc_dev), which); 180 #endif 181 panic("clmpcc_pcctwo_iackhook %d", which); 182 } 183 184 foo = pcc2_reg_read(sys_pcctwo, offset); 185 } 186 187 /* 188 * This routine is only used prior to clmpcc_attach() being called 189 */ 190 void 191 clmpcc_pcctwo_consiackhook(sc, which) 192 struct clmpcc_softc *sc; 193 int which; 194 { 195 bus_space_handle_t bush; 196 bus_size_t offset; 197 volatile u_char foo; 198 199 switch (which) { 200 case CLMPCC_IACK_MODEM: 201 offset = PCC2REG_SCC_MODEM_PIACK; 202 break; 203 204 case CLMPCC_IACK_RX: 205 offset = PCC2REG_SCC_RX_PIACK; 206 break; 207 208 case CLMPCC_IACK_TX: 209 offset = PCC2REG_SCC_TX_PIACK; 210 break; 211 default: 212 #ifdef DEBUG 213 printf("%s: Invalid IACK number '%d'\n", 214 device_xname(&sc->sc_dev), which); 215 panic("clmpcc_pcctwo_consiackhook"); 216 #endif 217 panic("clmpcc_pcctwo_iackhook %d", which); 218 } 219 220 #ifdef MVME68K 221 /* 222 * We need to fake the tag and handle since 'sys_pcctwo' will 223 * be NULL during early system startup... 224 */ 225 bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET + 226 PCCTWO_REG_OFF]); 227 228 foo = bus_space_read_1(&_mainbus_space_tag, bush, offset); 229 #else 230 #error Need consiack hook 231 #endif 232 } 233 234 235 /**************************************************************** 236 * Console support functions (MVME PCCchip2 specific!) 237 ****************************************************************/ 238 239 /* 240 * Check for CD2401 console. 241 */ 242 void 243 clmpcccnprobe(cp) 244 struct consdev *cp; 245 { 246 int maj; 247 248 #if defined(MVME68K) 249 if (machineid != MVME_167 && machineid != MVME_177) 250 #elif defined(MVME88K) 251 if (machineid != MVME_187) 252 #endif 253 { 254 cp->cn_pri = CN_DEAD; 255 return; 256 } 257 258 /* 259 * Locate the major number 260 */ 261 maj = cdevsw_lookup_major(&clmpcc_cdevsw); 262 263 /* Initialize required fields. */ 264 cp->cn_dev = makedev(maj, 0); 265 cp->cn_pri = CN_NORMAL; 266 } 267 268 void 269 clmpcccninit(cp) 270 struct consdev *cp; 271 { 272 static struct clmpcc_softc cons_sc; 273 274 cons_sc.sc_iot = &_mainbus_space_tag; 275 bus_space_map(&_mainbus_space_tag, 276 intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF, 277 PCC2REG_SIZE, 0, &cons_sc.sc_ioh); 278 cons_sc.sc_clk = 20000000; 279 cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW; 280 cons_sc.sc_swaprtsdtr = 1; 281 cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook; 282 cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE; 283 cons_sc.sc_rpilr = 0x03; 284 cons_sc.sc_tpilr = 0x02; 285 cons_sc.sc_mpilr = 0x01; 286 287 clmpcc_cnattach(&cons_sc, 0, 9600); 288 } 289
Indexes created Thu Oct 02 14:10:14 GMT 2025