clmpcc_pcctwo.c revision 1.11
1 /* $NetBSD: clmpcc_pcctwo.c,v 1.11 2006/03/29 07:07:41 thorpej 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 1.11 2006/03/29 07:07:41 thorpej 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 <machine/cpu.h> 61 #include <machine/bus.h> 62 #include <machine/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; 128 int level = pa->pa_ipl; 129 130 sc = device_private(self); 131 pa = aux; 132 level = pa->pa_ipl; 133 sc->sc_iot = pa->pa_bust; 134 bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh); 135 136 sc->sc_clk = 20000000; 137 sc->sc_byteswap = CLMPCC_BYTESWAP_LOW; 138 sc->sc_swaprtsdtr = 1; 139 sc->sc_iackhook = clmpcc_pcctwo_iackhook; 140 sc->sc_vector_base = PCCTWO_SCC_VECBASE; 141 sc->sc_rpilr = 0x03; 142 sc->sc_tpilr = 0x02; 143 sc->sc_mpilr = 0x01; 144 sc->sc_evcnt = pcctwointr_evcnt(level); 145 146 /* Do common parts of CD2401 configuration. */ 147 clmpcc_attach(sc); 148 149 /* Hook the interrupts */ 150 pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL); 151 pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc, 152 NULL); 153 pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL); 154 pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL); 155 } 156 157 void 158 clmpcc_pcctwo_iackhook(sc, which) 159 struct clmpcc_softc *sc; 160 int which; 161 { 162 bus_size_t offset; 163 volatile u_char foo; 164 165 switch (which) { 166 case CLMPCC_IACK_MODEM: 167 offset = PCC2REG_SCC_MODEM_PIACK; 168 break; 169 170 case CLMPCC_IACK_RX: 171 offset = PCC2REG_SCC_RX_PIACK; 172 break; 173 174 case CLMPCC_IACK_TX: 175 offset = PCC2REG_SCC_TX_PIACK; 176 break; 177 default: 178 #ifdef DEBUG 179 printf("%s: Invalid IACK number '%d'\n", 180 sc->sc_dev.dv_xname, which); 181 #endif 182 panic("clmpcc_pcctwo_iackhook %d", which); 183 } 184 185 foo = pcc2_reg_read(sys_pcctwo, offset); 186 } 187 188 /* 189 * This routine is only used prior to clmpcc_attach() being called 190 */ 191 void 192 clmpcc_pcctwo_consiackhook(sc, which) 193 struct clmpcc_softc *sc; 194 int which; 195 { 196 bus_space_handle_t bush; 197 bus_size_t offset; 198 volatile u_char foo; 199 200 switch (which) { 201 case CLMPCC_IACK_MODEM: 202 offset = PCC2REG_SCC_MODEM_PIACK; 203 break; 204 205 case CLMPCC_IACK_RX: 206 offset = PCC2REG_SCC_RX_PIACK; 207 break; 208 209 case CLMPCC_IACK_TX: 210 offset = PCC2REG_SCC_TX_PIACK; 211 break; 212 default: 213 #ifdef DEBUG 214 printf("%s: Invalid IACK number '%d'\n", 215 sc->sc_dev.dv_xname, which); 216 panic("clmpcc_pcctwo_consiackhook"); 217 #endif 218 panic("clmpcc_pcctwo_iackhook %d", which); 219 } 220 221 #ifdef MVME68K 222 /* 223 * We need to fake the tag and handle since 'sys_pcctwo' will 224 * be NULL during early system startup... 225 */ 226 bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET + 227 PCCTWO_REG_OFF]); 228 229 foo = bus_space_read_1(&_mainbus_space_tag, bush, offset); 230 #else 231 #error Need consiack hook 232 #endif 233 } 234 235 236 /**************************************************************** 237 * Console support functions (MVME PCCchip2 specific!) 238 ****************************************************************/ 239 240 /* 241 * Check for CD2401 console. 242 */ 243 void 244 clmpcccnprobe(cp) 245 struct consdev *cp; 246 { 247 int maj; 248 249 #if defined(MVME68K) 250 if (machineid != MVME_167 && machineid != MVME_177) 251 #elif defined(MVME88K) 252 if (machineid != MVME_187) 253 #endif 254 { 255 cp->cn_pri = CN_DEAD; 256 return; 257 } 258 259 /* 260 * Locate the major number 261 */ 262 maj = cdevsw_lookup_major(&clmpcc_cdevsw); 263 264 /* Initialize required fields. */ 265 cp->cn_dev = makedev(maj, 0); 266 cp->cn_pri = CN_NORMAL; 267 } 268 269 void 270 clmpcccninit(cp) 271 struct consdev *cp; 272 { 273 static struct clmpcc_softc cons_sc; 274 275 cons_sc.sc_iot = &_mainbus_space_tag; 276 bus_space_map(&_mainbus_space_tag, 277 intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF, 278 PCC2REG_SIZE, 0, &cons_sc.sc_ioh); 279 cons_sc.sc_clk = 20000000; 280 cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW; 281 cons_sc.sc_swaprtsdtr = 1; 282 cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook; 283 cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE; 284 cons_sc.sc_rpilr = 0x03; 285 cons_sc.sc_tpilr = 0x02; 286 cons_sc.sc_mpilr = 0x01; 287 288 clmpcc_cnattach(&cons_sc, 0, 9600); 289 } 290
Indexes created Thu Oct 02 14:10:14 GMT 2025