clmpcc_pcctwo.c revision 1.15
1 /* $NetBSD: clmpcc_pcctwo.c,v 1.15 2008/04/28 20:23:53 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Cirrus Logic CD2401 4-channel serial chip. PCCchip2 Front-end. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: clmpcc_pcctwo.c,v 1.15 2008/04/28 20:23:53 martin Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/proc.h> 42 #include <sys/device.h> 43 #include <sys/conf.h> 44 #include <sys/file.h> 45 #include <sys/ioctl.h> 46 #include <sys/tty.h> 47 #include <sys/time.h> 48 #include <sys/kernel.h> 49 #include <sys/syslog.h> 50 51 #include <dev/cons.h> 52 53 #include <sys/cpu.h> 54 #include <sys/bus.h> 55 #include <sys/intr.h> 56 57 #include <dev/ic/clmpccvar.h> 58 59 #include <dev/mvme/pcctwovar.h> 60 #include <dev/mvme/pcctworeg.h> 61 62 /* XXXXSCW: Fixme */ 63 #ifdef MVME68K 64 #include <mvme68k/dev/mainbus.h> 65 #else 66 #error Need consiack hook 67 #endif 68 69 70 /* Definition of the driver for autoconfig. */ 71 int clmpcc_pcctwo_match(struct device *, struct cfdata *, void *); 72 void clmpcc_pcctwo_attach(struct device *, struct device *, void *); 73 void clmpcc_pcctwo_iackhook(struct clmpcc_softc *, int); 74 void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *, int); 75 76 CFATTACH_DECL(clmpcc_pcctwo, sizeof(struct clmpcc_softc), 77 clmpcc_pcctwo_match, clmpcc_pcctwo_attach, NULL, NULL); 78 79 extern struct cfdriver clmpcc_cd; 80 81 extern const struct cdevsw clmpcc_cdevsw; 82 83 /* 84 * For clmpcccn*() 85 */ 86 cons_decl(clmpcc); 87 88 89 /* 90 * Is the CD2401 chip present? 91 */ 92 int 93 clmpcc_pcctwo_match(parent, cf, aux) 94 struct device *parent; 95 struct cfdata *cf; 96 void *aux; 97 { 98 struct pcctwo_attach_args *pa; 99 100 pa = aux; 101 102 if (strcmp(pa->pa_name, clmpcc_cd.cd_name)) 103 return (0); 104 105 pa->pa_ipl = cf->pcctwocf_ipl; 106 107 return (1); 108 } 109 110 /* 111 * Attach a found CD2401. 112 */ 113 void 114 clmpcc_pcctwo_attach(parent, self, aux) 115 struct device *parent; 116 struct device *self; 117 void *aux; 118 { 119 struct clmpcc_softc *sc; 120 struct pcctwo_attach_args *pa = aux; 121 int level = pa->pa_ipl; 122 123 sc = device_private(self); 124 level = pa->pa_ipl; 125 sc->sc_iot = pa->pa_bust; 126 bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh); 127 128 sc->sc_clk = 20000000; 129 sc->sc_byteswap = CLMPCC_BYTESWAP_LOW; 130 sc->sc_swaprtsdtr = 1; 131 sc->sc_iackhook = clmpcc_pcctwo_iackhook; 132 sc->sc_vector_base = PCCTWO_SCC_VECBASE; 133 sc->sc_rpilr = 0x03; 134 sc->sc_tpilr = 0x02; 135 sc->sc_mpilr = 0x01; 136 sc->sc_evcnt = pcctwointr_evcnt(level); 137 138 /* Do common parts of CD2401 configuration. */ 139 clmpcc_attach(sc); 140 141 /* Hook the interrupts */ 142 pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL); 143 pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc, 144 NULL); 145 pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL); 146 pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL); 147 } 148 149 void 150 clmpcc_pcctwo_iackhook(sc, which) 151 struct clmpcc_softc *sc; 152 int which; 153 { 154 bus_size_t offset; 155 volatile u_char foo; 156 157 switch (which) { 158 case CLMPCC_IACK_MODEM: 159 offset = PCC2REG_SCC_MODEM_PIACK; 160 break; 161 162 case CLMPCC_IACK_RX: 163 offset = PCC2REG_SCC_RX_PIACK; 164 break; 165 166 case CLMPCC_IACK_TX: 167 offset = PCC2REG_SCC_TX_PIACK; 168 break; 169 default: 170 #ifdef DEBUG 171 printf("%s: Invalid IACK number '%d'\n", 172 device_xname(&sc->sc_dev), which); 173 #endif 174 panic("clmpcc_pcctwo_iackhook %d", which); 175 } 176 177 foo = pcc2_reg_read(sys_pcctwo, offset); 178 } 179 180 /* 181 * This routine is only used prior to clmpcc_attach() being called 182 */ 183 void 184 clmpcc_pcctwo_consiackhook(sc, which) 185 struct clmpcc_softc *sc; 186 int which; 187 { 188 bus_space_handle_t bush; 189 bus_size_t offset; 190 volatile u_char foo; 191 192 switch (which) { 193 case CLMPCC_IACK_MODEM: 194 offset = PCC2REG_SCC_MODEM_PIACK; 195 break; 196 197 case CLMPCC_IACK_RX: 198 offset = PCC2REG_SCC_RX_PIACK; 199 break; 200 201 case CLMPCC_IACK_TX: 202 offset = PCC2REG_SCC_TX_PIACK; 203 break; 204 default: 205 #ifdef DEBUG 206 printf("%s: Invalid IACK number '%d'\n", 207 device_xname(&sc->sc_dev), which); 208 panic("clmpcc_pcctwo_consiackhook"); 209 #endif 210 panic("clmpcc_pcctwo_iackhook %d", which); 211 } 212 213 #ifdef MVME68K 214 /* 215 * We need to fake the tag and handle since 'sys_pcctwo' will 216 * be NULL during early system startup... 217 */ 218 bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET + 219 PCCTWO_REG_OFF]); 220 221 foo = bus_space_read_1(&_mainbus_space_tag, bush, offset); 222 #else 223 #error Need consiack hook 224 #endif 225 } 226 227 228 /**************************************************************** 229 * Console support functions (MVME PCCchip2 specific!) 230 ****************************************************************/ 231 232 /* 233 * Check for CD2401 console. 234 */ 235 void 236 clmpcccnprobe(cp) 237 struct consdev *cp; 238 { 239 int maj; 240 241 #if defined(MVME68K) 242 if (machineid != MVME_167 && machineid != MVME_177) 243 #elif defined(MVME88K) 244 if (machineid != MVME_187) 245 #endif 246 { 247 cp->cn_pri = CN_DEAD; 248 return; 249 } 250 251 /* 252 * Locate the major number 253 */ 254 maj = cdevsw_lookup_major(&clmpcc_cdevsw); 255 256 /* Initialize required fields. */ 257 cp->cn_dev = makedev(maj, 0); 258 cp->cn_pri = CN_NORMAL; 259 } 260 261 void 262 clmpcccninit(cp) 263 struct consdev *cp; 264 { 265 static struct clmpcc_softc cons_sc; 266 267 cons_sc.sc_iot = &_mainbus_space_tag; 268 bus_space_map(&_mainbus_space_tag, 269 intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF, 270 PCC2REG_SIZE, 0, &cons_sc.sc_ioh); 271 cons_sc.sc_clk = 20000000; 272 cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW; 273 cons_sc.sc_swaprtsdtr = 1; 274 cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook; 275 cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE; 276 cons_sc.sc_rpilr = 0x03; 277 cons_sc.sc_tpilr = 0x02; 278 cons_sc.sc_mpilr = 0x01; 279 280 clmpcc_cnattach(&cons_sc, 0, 9600); 281 } 282
Indexes created Wed Oct 15 16:09:53 GMT 2025