tcic2_isa.c revision 1.2
1 /* $NetBSD: tcic2_isa.c,v 1.2 1999/04/08 16:14:29 bad Exp $ */ 2 3 #undef TCICISADEBUG 4 5 /* 6 * 7 * Copyright (c) 1998, 1999 Christoph Badura. All rights reserved. 8 * Copyright (c) 1997 Marc Horowitz. All rights reserved. 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 Marc Horowitz. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 37 #include <sys/types.h> 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <sys/extent.h> 42 #include <sys/malloc.h> 43 44 #include <vm/vm.h> 45 46 #include <machine/bus.h> 47 #include <machine/intr.h> 48 49 #include <dev/isa/isareg.h> 50 #include <dev/isa/isavar.h> 51 52 #include <dev/pcmcia/pcmciareg.h> 53 #include <dev/pcmcia/pcmciavar.h> 54 #include <dev/pcmcia/pcmciachip.h> 55 56 #include <dev/ic/tcic2reg.h> 57 #include <dev/ic/tcic2var.h> 58 59 /***************************************************************************** 60 * Configurable parameters. 61 *****************************************************************************/ 62 63 #include "opt_tcic_isa_alloc_iobase.h" 64 #include "opt_tcic_isa_alloc_iosize.h" 65 #include "opt_tcic_isa_intr_alloc_mask.h" 66 67 /* 68 * Default I/O allocation range. If both are set to non-zero, these 69 * values will be used instead. Otherwise, the code attempts to probe 70 * the bus width. Systems with 10 address bits should use 0x300 and 0xff. 71 * Systems with 12 address bits (most) should use 0x400 and 0xbff. 72 */ 73 74 #ifndef TCIC_ISA_ALLOC_IOBASE 75 #define TCIC_ISA_ALLOC_IOBASE 0 76 #endif 77 78 #ifndef TCIC_ISA_ALLOC_IOSIZE 79 #define TCIC_ISA_ALLOC_IOSIZE 0 80 #endif 81 82 int tcic_isa_alloc_iobase = TCIC_ISA_ALLOC_IOBASE; 83 int tcic_isa_alloc_iosize = TCIC_ISA_ALLOC_IOSIZE; 84 85 /* 86 * Default IRQ allocation bitmask. This defines the range of allowable 87 * IRQs for PCMCIA slots. Useful if order of probing would screw up other 88 * devices, or if TCIC hardware/cards have trouble with certain interrupt 89 * lines. 90 * 91 * We disable IRQ 10 by default, since some common laptops (namely, the 92 * NEC Versa series) reserve IRQ 10 for the docking station SCSI interface. 93 * 94 * XXX Do we care about this? the Versa doesn't use a tcic. -chb 95 */ 96 97 #ifndef TCIC_ISA_INTR_ALLOC_MASK 98 #define TCIC_ISA_INTR_ALLOC_MASK 0xffff 99 #endif 100 101 int tcic_isa_intr_alloc_mask = TCIC_ISA_INTR_ALLOC_MASK; 102 103 /***************************************************************************** 104 * End of configurable parameters. 105 *****************************************************************************/ 106 107 #ifdef TCICISADEBUG 108 int tcic_isa_debug = 1; 109 #define DPRINTF(arg) if (tcic_isa_debug) printf arg; 110 #else 111 #define DPRINTF(arg) 112 #endif 113 114 int tcic_isa_probe __P((struct device *, struct cfdata *, void *)); 115 void tcic_isa_attach __P((struct device *, struct device *, void *)); 116 117 void *tcic_isa_chip_intr_establish __P((pcmcia_chipset_handle_t, 118 struct pcmcia_function *, int, int (*) (void *), void *)); 119 void tcic_isa_chip_intr_disestablish __P((pcmcia_chipset_handle_t, void *)); 120 121 struct cfattach tcic_isa_ca = { 122 sizeof(struct tcic_softc), tcic_isa_probe, tcic_isa_attach 123 }; 124 125 static struct pcmcia_chip_functions tcic_isa_functions = { 126 tcic_chip_mem_alloc, 127 tcic_chip_mem_free, 128 tcic_chip_mem_map, 129 tcic_chip_mem_unmap, 130 131 tcic_chip_io_alloc, 132 tcic_chip_io_free, 133 tcic_chip_io_map, 134 tcic_chip_io_unmap, 135 136 tcic_isa_chip_intr_establish, 137 tcic_isa_chip_intr_disestablish, 138 139 tcic_chip_socket_enable, 140 tcic_chip_socket_disable, 141 }; 142 143 int 144 tcic_isa_probe(parent, match, aux) 145 struct device *parent; 146 struct cfdata *match; 147 void *aux; 148 { 149 struct isa_attach_args *ia = aux; 150 bus_space_tag_t iot = ia->ia_iot; 151 bus_space_handle_t ioh, memh; 152 int val, found; 153 154 /* Disallow wildcarded i/o address. */ 155 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 156 return (0); 157 158 if (bus_space_map(iot, ia->ia_iobase, TCIC_IOSIZE, 0, &ioh)) 159 return (0); 160 161 if (ia->ia_msize == -1) 162 ia->ia_msize = TCIC_MEMSIZE; 163 164 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) 165 return (0); 166 167 DPRINTF(("tcic probing 0x%03x\n", ia->ia_iobase)); 168 found = 0; 169 170 /* 171 * First, check for the reserved bits to be zero. 172 */ 173 if (tcic_check_reserved_bits(iot, ioh)) { 174 DPRINTF(("tcic: reserved bits checked OK\n")); 175 /* Second, check whether the we know how to handle the chip. */ 176 if ((val = tcic_chipid(iot, ioh))) { 177 DPRINTF(("tcic id: 0x%02x\n", val)); 178 if (tcic_chipid_known(val)) 179 found++; 180 } 181 } 182 else 183 DPRINTF(("tcic: reserved bits didn't check OK\n")); 184 185 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 186 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 187 188 if (!found) 189 return (0); 190 191 ia->ia_iosize = TCIC_IOSIZE; 192 193 return (1); 194 } 195 196 void 197 tcic_isa_attach(parent, self, aux) 198 struct device *parent, *self; 199 void *aux; 200 { 201 struct tcic_softc *sc = (void *) self; 202 struct isa_attach_args *ia = aux; 203 isa_chipset_tag_t ic = ia->ia_ic; 204 bus_space_tag_t iot = ia->ia_iot; 205 bus_space_tag_t memt = ia->ia_memt; 206 bus_space_handle_t ioh; 207 bus_space_handle_t memh; 208 209 /* Map i/o space. */ 210 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 211 printf(": can't map i/o space\n"); 212 return; 213 } 214 215 /* Map mem space. */ 216 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) { 217 printf(": can't map mem space\n"); 218 return; 219 } 220 221 sc->membase = ia->ia_maddr; 222 sc->subregionmask = (1 << (ia->ia_msize / TCIC_MEM_PAGESIZE)) - 1; 223 sc->memsize2 = tcic_log2((u_int)ia->ia_msize); 224 225 sc->intr_est = ic; 226 sc->pct = (pcmcia_chipset_tag_t) & tcic_isa_functions; 227 228 sc->iot = iot; 229 sc->ioh = ioh; 230 sc->memt = memt; 231 sc->memh = memh; 232 233 /* 234 * determine chip type and initialise some chip type dependend 235 * parameters in softc. 236 */ 237 sc->chipid = tcic_chipid(iot, ioh); 238 sc->validirqs = tcic_validirqs(sc->chipid); 239 240 /* 241 * allocate an irq. interrupts are relatively 242 * scarce but for TCIC controllers very infrequent. 243 */ 244 245 if ((sc->irq = ia->ia_irq) == IRQUNK) { 246 if (isa_intr_alloc(ic, 247 sc->validirqs & (tcic_isa_intr_alloc_mask & 0xff00), 248 IST_EDGE, &sc->irq)) { 249 printf("\n%s: can't allocate interrupt\n", 250 sc->dev.dv_xname); 251 return; 252 } 253 printf(": using irq %d", sc->irq); 254 } 255 printf("\n"); 256 257 tcic_attach(sc); 258 259 260 /* 261 * XXX mycroft recommends I/O space range 0x400-0xfff. 262 */ 263 264 /* 265 * XXX some hardware doesn't seem to grok addresses in 0x400 range-- 266 * apparently missing a bit or more of address lines. (e.g. 267 * CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI 268 * TravelMate 5000--not clear which is at fault) 269 * 270 * Add a kludge to detect 10 bit wide buses and deal with them, 271 * and also a config file option to override the probe. 272 */ 273 274 #if 0 275 /* 276 * This is what we'd like to use, but... 277 */ 278 sc->iobase = 0x400; 279 sc->iosize = 0xbff; 280 #else 281 /* 282 * ...the above bus width probe doesn't always work. 283 * So, experimentation has shown the following range 284 * to not lose on systems that 0x300-0x3ff loses on 285 * (e.g. the NEC Versa 6030X). 286 */ 287 sc->iobase = 0x330; 288 sc->iosize = 0x0cf; 289 #endif 290 291 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx)\n", 292 sc->dev.dv_xname, (long) sc->iobase, 293 (long) sc->iobase + sc->iosize)); 294 295 if (tcic_isa_alloc_iobase && tcic_isa_alloc_iosize) { 296 sc->iobase = tcic_isa_alloc_iobase; 297 sc->iosize = tcic_isa_alloc_iosize; 298 299 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx " 300 "(config override)\n", sc->dev.dv_xname, (long) sc->iobase, 301 (long) sc->iobase + sc->iosize)); 302 } 303 sc->ih = isa_intr_establish(ic, sc->irq, IST_EDGE, IPL_TTY, 304 tcic_intr, sc); 305 if (sc->ih == NULL) { 306 printf("%s: can't establish interrupt\n", sc->dev.dv_xname); 307 return; 308 } 309 310 tcic_attach_sockets(sc); 311 } 312 313 void * 314 tcic_isa_chip_intr_establish(pch, pf, ipl, fct, arg) 315 pcmcia_chipset_handle_t pch; 316 struct pcmcia_function *pf; 317 int ipl; 318 int (*fct) __P((void *)); 319 void *arg; 320 { 321 struct tcic_handle *h = (struct tcic_handle *) pch; 322 int irq, ist; 323 void *ih; 324 325 DPRINTF(("%s: tcic_isa_chip_intr_establish\n", h->sc->dev.dv_xname)); 326 327 /* XXX should we convert level to pulse? -chb */ 328 if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL) 329 ist = IST_LEVEL; 330 else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE) 331 ist = IST_PULSE; 332 else 333 ist = IST_LEVEL; 334 335 if (isa_intr_alloc(h->sc->intr_est, 336 h->sc->validirqs & tcic_isa_intr_alloc_mask, ist, &irq)) 337 return (NULL); 338 if ((ih = isa_intr_establish(h->sc->intr_est, irq, ist, ipl, 339 fct, arg)) == NULL) 340 return (NULL); 341 342 DPRINTF(("%s: intr estrablished\n", h->sc->dev.dv_xname)); 343 344 h->ih_irq = irq; 345 346 printf("%s: card irq %d\n", h->pcmcia->dv_xname, irq); 347 348 return (ih); 349 } 350 351 void 352 tcic_isa_chip_intr_disestablish(pch, ih) 353 pcmcia_chipset_handle_t pch; 354 void *ih; 355 { 356 struct tcic_handle *h = (struct tcic_handle *) pch; 357 int val, reg; 358 359 DPRINTF(("%s: tcic_isa_chip_intr_disestablish\n", h->sc->dev.dv_xname)); 360 361 h->ih_irq = 0; 362 363 reg = TCIC_IR_SCF1_N(h->sock); 364 val = tcic_read_ind_2(h, reg); 365 val &= ~TCIC_SCF1_IRQ_MASK; 366 tcic_write_ind_2(h, reg, val); 367 368 isa_intr_disestablish(h->sc->intr_est, ih); 369 } 370
Indexes created Mon Nov 03 11:09:54 GMT 2025