clmpcc_pcctwo.c revision 1.19
1 /* $NetBSD: clmpcc_pcctwo.c,v 1.19 2012/10/27 17:18:27 chs 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 1.19 2012/10/27 17:18:27 chs 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(device_t, cfdata_t, void *); 72 void clmpcc_pcctwo_attach(device_t, device_t, void *); 73 void clmpcc_pcctwo_iackhook(struct clmpcc_softc *, int); 74 void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *, int); 75 76 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t cf, void *aux) 94 { 95 struct pcctwo_attach_args *pa; 96 97 pa = aux; 98 99 if (strcmp(pa->pa_name, clmpcc_cd.cd_name)) 100 return (0); 101 102 pa->pa_ipl = cf->pcctwocf_ipl; 103 104 return (1); 105 } 106 107 /* 108 * Attach a found CD2401. 109 */ 110 void 111 clmpcc_pcctwo_attach(device_t parent, device_t self, void *aux) 112 { 113 struct clmpcc_softc *sc; 114 struct pcctwo_attach_args *pa = aux; 115 int level = pa->pa_ipl; 116 117 sc = device_private(self); 118 sc->sc_dev = self; 119 level = pa->pa_ipl; 120 sc->sc_iot = pa->pa_bust; 121 bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh); 122 123 sc->sc_clk = 20000000; 124 sc->sc_byteswap = CLMPCC_BYTESWAP_LOW; 125 sc->sc_swaprtsdtr = 1; 126 sc->sc_iackhook = clmpcc_pcctwo_iackhook; 127 sc->sc_vector_base = PCCTWO_SCC_VECBASE; 128 sc->sc_rpilr = 0x03; 129 sc->sc_tpilr = 0x02; 130 sc->sc_mpilr = 0x01; 131 sc->sc_evcnt = pcctwointr_evcnt(level); 132 133 /* Do common parts of CD2401 configuration. */ 134 clmpcc_attach(sc); 135 136 /* Hook the interrupts */ 137 pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL); 138 pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc, 139 NULL); 140 pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL); 141 pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL); 142 } 143 144 void 145 clmpcc_pcctwo_iackhook(struct clmpcc_softc *sc, int which) 146 { 147 bus_size_t offset; 148 volatile u_char foo; 149 150 switch (which) { 151 case CLMPCC_IACK_MODEM: 152 offset = PCC2REG_SCC_MODEM_PIACK; 153 break; 154 155 case CLMPCC_IACK_RX: 156 offset = PCC2REG_SCC_RX_PIACK; 157 break; 158 159 case CLMPCC_IACK_TX: 160 offset = PCC2REG_SCC_TX_PIACK; 161 break; 162 default: 163 #ifdef DEBUG 164 printf("%s: Invalid IACK number '%d'\n", 165 device_xname(sc->sc_dev), which); 166 #endif 167 panic("clmpcc_pcctwo_iackhook %d", which); 168 } 169 170 foo = pcc2_reg_read(sys_pcctwo, offset); 171 } 172 173 /* 174 * This routine is only used prior to clmpcc_attach() being called 175 */ 176 void 177 clmpcc_pcctwo_consiackhook(struct clmpcc_softc *sc, int which) 178 { 179 bus_space_handle_t bush; 180 bus_size_t offset; 181 volatile u_char foo; 182 183 switch (which) { 184 case CLMPCC_IACK_MODEM: 185 offset = PCC2REG_SCC_MODEM_PIACK; 186 break; 187 188 case CLMPCC_IACK_RX: 189 offset = PCC2REG_SCC_RX_PIACK; 190 break; 191 192 case CLMPCC_IACK_TX: 193 offset = PCC2REG_SCC_TX_PIACK; 194 break; 195 default: 196 #ifdef DEBUG 197 printf("%s: Invalid IACK number '%d'\n", 198 device_xname(sc->sc_dev), which); 199 panic("clmpcc_pcctwo_consiackhook"); 200 #endif 201 panic("clmpcc_pcctwo_iackhook %d", which); 202 } 203 204 #ifdef MVME68K 205 /* 206 * We need to fake the tag and handle since 'sys_pcctwo' will 207 * be NULL during early system startup... 208 */ 209 bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET + 210 PCCTWO_REG_OFF]); 211 212 foo = bus_space_read_1(&_mainbus_space_tag, bush, offset); 213 #else 214 #error Need consiack hook 215 #endif 216 } 217 218 219 /**************************************************************** 220 * Console support functions (MVME PCCchip2 specific!) 221 ****************************************************************/ 222 223 /* 224 * Check for CD2401 console. 225 */ 226 void 227 clmpcccnprobe(struct consdev *cp) 228 { 229 int maj; 230 231 #if defined(MVME68K) 232 if (machineid != MVME_167 && machineid != MVME_177) 233 #elif defined(MVME88K) 234 if (machineid != MVME_187) 235 #endif 236 { 237 cp->cn_pri = CN_DEAD; 238 return; 239 } 240 241 /* 242 * Locate the major number 243 */ 244 maj = cdevsw_lookup_major(&clmpcc_cdevsw); 245 246 /* Initialize required fields. */ 247 cp->cn_dev = makedev(maj, 0); 248 cp->cn_pri = CN_NORMAL; 249 } 250 251 void 252 clmpcccninit(struct consdev *cp) 253 { 254 static struct clmpcc_softc cons_sc; 255 256 cons_sc.sc_iot = &_mainbus_space_tag; 257 bus_space_map(&_mainbus_space_tag, 258 intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF, 259 PCC2REG_SIZE, 0, &cons_sc.sc_ioh); 260 cons_sc.sc_clk = 20000000; 261 cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW; 262 cons_sc.sc_swaprtsdtr = 1; 263 cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook; 264 cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE; 265 cons_sc.sc_rpilr = 0x03; 266 cons_sc.sc_tpilr = 0x02; 267 cons_sc.sc_mpilr = 0x01; 268 269 clmpcc_cnattach(&cons_sc, 0, 9600); 270 } 271
Indexes created Thu Oct 02 14:10:14 GMT 2025