1 /* $NetBSD: sio16.c,v 1.28 2021/12/07 22:13:56 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * aurora technologies nova16 driver. this board is an sbus card with 31 * an external 16 port serial box. there are two cirrus logic cd180 32 * 8 port serial chips used in the implementation. 33 * 34 * thanks go to Oliver Aldulea <oli (at) morcov.bv.ro> for writing the 35 * linux driver of this that helped clear up a couple of issues. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: sio16.c,v 1.28 2021/12/07 22:13:56 andvar Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/conf.h> 43 #include <sys/device.h> 44 #include <sys/systm.h> 45 46 #include <machine/autoconf.h> 47 48 #include <dev/ic/cd18xxvar.h> 49 #include <dev/ic/cd18xxreg.h> 50 51 #include "ioconf.h" 52 #include "locators.h" 53 54 /* 1600se configuration register bits */ 55 #define SIO16_CONFIGREG_ENABLE_IO 8 56 #define SIO16_CONFIGREG_ENABLE_IRQ 4 57 58 /* 1600se interrupt ackknowledge register bytes */ 59 #define SIO16_MINT_ACK 1 /* modem interrupt acknowledge */ 60 #define SIO16_TINT_ACK 2 /* tx interrupt acknowledge */ 61 #define SIO16_RINT_ACK 3 /* rx interrupt acknowledge */ 62 63 /* 64 * device cfattach and cfdriver definitions, plus the routine we pass 65 * to the cd18xx code or interrupt acknowledgement. 66 */ 67 static int sio16_match(device_t, cfdata_t, void *); 68 static void sio16_attach(device_t, device_t, void *); 69 static u_char sio16_ackfunc(void *, int who); 70 71 /* 72 * define the sio16 per-device softc. 73 */ 74 struct sio16_softc { 75 device_t sc_dev; 76 77 /* sbus information */ 78 bus_space_tag_t sc_tag; /* bus tag for below */ 79 bus_space_handle_t sc_configreg; /* configuration register */ 80 bus_space_handle_t sc_reg[2]; /* cd180 register sets */ 81 bus_space_handle_t sc_ack; /* interrupt acknowledgement */ 82 #define SIO16_1600SE 0x00000001 83 84 u_int sc_clk; 85 86 /* cd180 information */ 87 int sc_ncd180; 88 89 }; 90 91 CFATTACH_DECL_NEW(siosixteen, sizeof(struct sio16_softc), 92 sio16_match, sio16_attach, NULL, NULL); 93 94 struct sio16_attach_args { 95 bus_space_tag_t cd_tag; 96 bus_space_handle_t cd_handle; 97 u_char (*cd_ackfunc)(void *, int); 98 void *cd_ackfunc_arg; 99 u_int cd_osc; 100 }; 101 102 /* 103 * device match routine: is there an sio16 present? 104 * 105 * note that we can not put "sio16" in the cfdriver, as this is an 106 * illegal name, so we have to hard code it here. 107 */ 108 #define SIO16_ROM_NAME "sio16" 109 int 110 sio16_match(device_t parent, cfdata_t cf, void *aux) 111 { 112 struct sbus_attach_args *sa = aux; 113 114 /* does the prom think i'm an sio16? */ 115 if (strcmp(SIO16_ROM_NAME, sa->sa_name) != 0) 116 return (0); 117 118 return (1); 119 } 120 121 /* 122 * device attach routine: go attach all sub devices. 123 */ 124 void 125 sio16_attach(device_t parent, device_t self, void *aux) 126 { 127 struct sbus_attach_args *sa = aux; 128 struct sio16_softc *sc = device_private(self); 129 bus_space_handle_t h; 130 char *mode, *model; 131 int i; 132 133 sc->sc_dev = self; 134 135 if (sa->sa_nreg != 4) 136 panic("sio16_attach: got %d registers instead of 4", 137 sa->sa_nreg); 138 139 /* copy our bus tag, we will need it */ 140 sc->sc_tag = sa->sa_bustag; 141 142 /* 143 * sio16 has 4 register mappings. a single byte configuration 144 * register, 2 128 byte regions for the cd180 registers, and 145 * a 4 byte region for interrupt acknowledgement. 146 */ 147 if (sbus_bus_map(sa->sa_bustag, 148 sa->sa_reg[0].oa_space, 149 sa->sa_reg[0].oa_base, 150 sa->sa_reg[0].oa_size, 151 0, &h) != 0) { 152 printf("%s at sbus: can not map registers 0\n", 153 device_xname(self)); 154 return; 155 } 156 sc->sc_configreg = h; 157 if (sbus_bus_map(sa->sa_bustag, 158 sa->sa_reg[1].sbr_slot, 159 sa->sa_reg[1].sbr_offset, 160 sa->sa_reg[1].sbr_size, 161 0, &h) != 0) { 162 printf("%s at sbus: can not map registers 1\n", 163 device_xname(self)); 164 return; 165 } 166 sc->sc_reg[0] = h; 167 if (sbus_bus_map(sa->sa_bustag, 168 sa->sa_reg[2].sbr_slot, 169 sa->sa_reg[2].sbr_offset, 170 sa->sa_reg[2].sbr_size, 171 0, &h) != 0) { 172 printf("%s at sbus: can not map registers 2\n", 173 device_xname(self)); 174 return; 175 } 176 sc->sc_reg[1] = h; 177 if (sbus_bus_map(sa->sa_bustag, 178 sa->sa_reg[3].sbr_slot, 179 sa->sa_reg[3].sbr_offset, 180 sa->sa_reg[3].sbr_size, 181 0, &h) != 0) { 182 printf("%s at sbus: can not map registers 3\n", 183 device_xname(self)); 184 return; 185 } 186 sc->sc_ack = h; 187 188 mode = prom_getpropstring(sa->sa_node, "mode"); 189 if (mode) 190 printf(", %s mode", mode); 191 192 /* get the clock frequency */ 193 sc->sc_clk = prom_getpropint(sa->sa_node, "clk", 24000); 194 195 model = prom_getpropstring(sa->sa_node, "model"); 196 if (model == 0) { 197 printf(", no model property, bailing\n"); 198 return; 199 } 200 201 /* are we an 1600se? */ 202 if (strcmp(model, "1600se") == 0) { 203 printf(", 16 channels"); 204 sc->sc_ncd180 = 2; 205 } else { 206 printf(", don't know model %s, bailing\n", model); 207 return; 208 } 209 210 /* establish interrupt channel */ 211 (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_TTY, 212 cd18xx_hardintr, sc); 213 214 /* reset the board, and turn on interrupts and I/O */ 215 bus_space_write_1(sa->sa_bustag, sc->sc_configreg, 0, 0); 216 delay(100); 217 bus_space_write_1(sa->sa_bustag, sc->sc_configreg, 0, 218 SIO16_CONFIGREG_ENABLE_IO | SIO16_CONFIGREG_ENABLE_IRQ | 219 (((sa->sa_pri) & 0x0f) >> 2)); 220 delay(10000); 221 222 printf("\n"); 223 224 /* finally, configure the clcd's underneath */ 225 for (i = 0; i < sc->sc_ncd180; i++) { 226 struct sio16_attach_args cd; 227 228 cd.cd_tag = sa->sa_bustag; 229 cd.cd_osc = sc->sc_clk * 100; 230 cd.cd_handle = (bus_space_handle_t)sc->sc_reg[i]; 231 cd.cd_ackfunc = sio16_ackfunc; 232 cd.cd_ackfunc_arg = sc; 233 (void)config_found(self, (void *)&cd, NULL, CFARGS_NONE); 234 } 235 } 236 237 /* 238 * note that the addresses used in this function match those assigned 239 * in clcd_attach() below, or the various service match routines. 240 */ 241 u_char 242 sio16_ackfunc(void *v, int who) 243 { 244 struct sio16_softc *sc = v; 245 bus_size_t addr; 246 247 switch (who) { 248 case CD18xx_INTRACK_RxINT: 249 case CD18xx_INTRACK_REINT: 250 addr = SIO16_RINT_ACK; 251 break; 252 case CD18xx_INTRACK_TxINT: 253 addr = SIO16_TINT_ACK; 254 break; 255 case CD18xx_INTRACK_MxINT: 256 addr = SIO16_MINT_ACK; 257 break; 258 default: 259 panic("%s: sio16_ackfunc: unknown ackfunc %d", 260 device_xname(sc->sc_dev), who); 261 } 262 return (bus_space_read_1(sc->sc_tag, sc->sc_ack, addr)); 263 } 264 265 /* 266 * we attach two `clcd' instances per 1600se, that each call the 267 * backend cd18xx driver for help. 268 */ 269 static int clcd_match(device_t, cfdata_t, void *); 270 static void clcd_attach(device_t, device_t, void *); 271 272 CFATTACH_DECL_NEW(clcd, sizeof(struct cd18xx_softc), 273 clcd_match, clcd_attach, NULL, NULL); 274 275 static int 276 clcd_match(device_t parent, cfdata_t cf, void *aux) 277 { 278 279 /* XXX */ 280 return 1; 281 } 282 283 static void 284 clcd_attach(device_t parent, device_t self, void *aux) 285 { 286 struct cd18xx_softc *sc = device_private(self); 287 struct sio16_attach_args *args = aux; 288 289 sc->sc_dev = self; 290 sc->sc_tag = args->cd_tag; 291 sc->sc_handle = args->cd_handle; 292 sc->sc_osc = args->cd_osc; 293 sc->sc_ackfunc = args->cd_ackfunc; 294 sc->sc_ackfunc_arg = args->cd_ackfunc_arg; 295 sc->sc_msmr = SIO16_MINT_ACK; 296 sc->sc_tsmr = SIO16_TINT_ACK; 297 sc->sc_rsmr = SIO16_RINT_ACK; 298 299 /* call the common code */ 300 cd18xx_attach(sc); 301 } 302
Indexes created Sun Oct 25 00:26:45 UTC 2026