tcic2_isa.c revision 1.3.4.1
1 /* $NetBSD: tcic2_isa.c,v 1.3.4.1 2002/01/10 19:55:44 thorpej Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1998, 1999 Christoph Badura. All rights reserved. 6 * Copyright (c) 1997 Marc Horowitz. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Marc Horowitz. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: tcic2_isa.c,v 1.3.4.1 2002/01/10 19:55:44 thorpej Exp $"); 36 37 #undef TCICISADEBUG 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/extent.h> 43 #include <sys/malloc.h> 44 45 #include <machine/bus.h> 46 #include <machine/intr.h> 47 48 #include <dev/isa/isareg.h> 49 #include <dev/isa/isavar.h> 50 51 #include <dev/pcmcia/pcmciareg.h> 52 #include <dev/pcmcia/pcmciavar.h> 53 #include <dev/pcmcia/pcmciachip.h> 54 55 #include <dev/ic/tcic2reg.h> 56 #include <dev/ic/tcic2var.h> 57 58 /***************************************************************************** 59 * Configurable parameters. 60 *****************************************************************************/ 61 62 #include "opt_tcic_isa_alloc_iobase.h" 63 #include "opt_tcic_isa_alloc_iosize.h" 64 #include "opt_tcic_isa_intr_alloc_mask.h" 65 66 /* 67 * Default I/O allocation range. If both are set to non-zero, these 68 * values will be used instead. Otherwise, the code attempts to probe 69 * the bus width. Systems with 10 address bits should use 0x300 and 0xff. 70 * Systems with 12 address bits (most) should use 0x400 and 0xbff. 71 */ 72 73 #ifndef TCIC_ISA_ALLOC_IOBASE 74 #define TCIC_ISA_ALLOC_IOBASE 0 75 #endif 76 77 #ifndef TCIC_ISA_ALLOC_IOSIZE 78 #define TCIC_ISA_ALLOC_IOSIZE 0 79 #endif 80 81 int tcic_isa_alloc_iobase = TCIC_ISA_ALLOC_IOBASE; 82 int tcic_isa_alloc_iosize = TCIC_ISA_ALLOC_IOSIZE; 83 84 /* 85 * Default IRQ allocation bitmask. This defines the range of allowable 86 * IRQs for PCMCIA slots. Useful if order of probing would screw up other 87 * devices, or if TCIC hardware/cards have trouble with certain interrupt 88 * lines. 89 * 90 * We disable IRQ 10 by default, since some common laptops (namely, the 91 * NEC Versa series) reserve IRQ 10 for the docking station SCSI interface. 92 * 93 * XXX Do we care about this? the Versa doesn't use a tcic. -chb 94 */ 95 96 #ifndef TCIC_ISA_INTR_ALLOC_MASK 97 #define TCIC_ISA_INTR_ALLOC_MASK 0xffff 98 #endif 99 100 int tcic_isa_intr_alloc_mask = TCIC_ISA_INTR_ALLOC_MASK; 101 102 /***************************************************************************** 103 * End of configurable parameters. 104 *****************************************************************************/ 105 106 #ifdef TCICISADEBUG 107 int tcic_isa_debug = 1; 108 #define DPRINTF(arg) if (tcic_isa_debug) printf arg; 109 #else 110 #define DPRINTF(arg) 111 #endif 112 113 int tcic_isa_probe __P((struct device *, struct cfdata *, void *)); 114 void tcic_isa_attach __P((struct device *, struct device *, void *)); 115 116 void *tcic_isa_chip_intr_establish __P((pcmcia_chipset_handle_t, 117 struct pcmcia_function *, int, int (*) (void *), void *)); 118 void tcic_isa_chip_intr_disestablish __P((pcmcia_chipset_handle_t, void *)); 119 120 struct cfattach tcic_isa_ca = { 121 sizeof(struct tcic_softc), tcic_isa_probe, tcic_isa_attach 122 }; 123 124 static struct pcmcia_chip_functions tcic_isa_functions = { 125 tcic_chip_mem_alloc, 126 tcic_chip_mem_free, 127 tcic_chip_mem_map, 128 tcic_chip_mem_unmap, 129 130 tcic_chip_io_alloc, 131 tcic_chip_io_free, 132 tcic_chip_io_map, 133 tcic_chip_io_unmap, 134 135 tcic_isa_chip_intr_establish, 136 tcic_isa_chip_intr_disestablish, 137 138 tcic_chip_socket_enable, 139 tcic_chip_socket_disable, 140 }; 141 142 int 143 tcic_isa_probe(parent, match, aux) 144 struct device *parent; 145 struct cfdata *match; 146 void *aux; 147 { 148 struct isa_attach_args *ia = aux; 149 bus_space_tag_t iot = ia->ia_iot; 150 bus_space_handle_t ioh, memh; 151 int val, found, msize; 152 153 if (ia->ia_nio < 1) 154 return (0); 155 if (ia->ia_niomem < 1) 156 return (0); 157 158 if (ISA_DIRECT_CONFIG(ia)) 159 return (0); 160 161 /* Disallow wildcarded i/o address. */ 162 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 163 return (0); 164 if (ia->ia_iomem[0].ir_addr == ISACF_IOMEM_DEFAULT) 165 return (0); 166 167 if (bus_space_map(iot, ia->ia_io[0].ir_addr, TCIC_IOSIZE, 0, &ioh)) 168 return (0); 169 170 if (ia->ia_iomem[0].ir_size == ISACF_IOSIZ_DEFAULT) 171 msize = TCIC_MEMSIZE; 172 else 173 msize = ia->ia_iomem[0].ir_size; 174 175 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 176 msize, 0, &memh)) { 177 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 178 return (0); 179 } 180 181 DPRINTF(("tcic probing 0x%03x\n", ia->ia_iobase)); 182 found = 0; 183 184 /* 185 * First, check for the reserved bits to be zero. 186 */ 187 if (tcic_check_reserved_bits(iot, ioh)) { 188 DPRINTF(("tcic: reserved bits checked OK\n")); 189 /* Second, check whether the we know how to handle the chip. */ 190 if ((val = tcic_chipid(iot, ioh))) { 191 DPRINTF(("tcic id: 0x%02x\n", val)); 192 if (tcic_chipid_known(val)) 193 found++; 194 } 195 } 196 else 197 DPRINTF(("tcic: reserved bits didn't check OK\n")); 198 199 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 200 bus_space_unmap(ia->ia_memt, memh, msize); 201 202 if (!found) 203 return (0); 204 205 ia->ia_nio = 1; 206 ia->ia_io[0].ir_size = TCIC_IOSIZE; 207 208 ia->ia_niomem = 1; 209 ia->ia_iomem[0].ir_size = msize; 210 211 /* IRQ is special. */ 212 213 ia->ia_ndrq = 0; 214 215 return (1); 216 } 217 218 void 219 tcic_isa_attach(parent, self, aux) 220 struct device *parent, *self; 221 void *aux; 222 { 223 struct tcic_softc *sc = (void *) self; 224 struct isa_attach_args *ia = aux; 225 isa_chipset_tag_t ic = ia->ia_ic; 226 bus_space_tag_t iot = ia->ia_iot; 227 bus_space_tag_t memt = ia->ia_memt; 228 bus_space_handle_t ioh; 229 bus_space_handle_t memh; 230 231 /* Map i/o space. */ 232 if (bus_space_map(iot, ia->ia_io[0].ir_addr, TCIC_IOSIZE, 0, &ioh)) { 233 printf(": can't map i/o space\n"); 234 return; 235 } 236 237 /* Map mem space. */ 238 if (bus_space_map(memt, ia->ia_iomem[0].ir_addr, 239 ia->ia_iomem[0].ir_size, 0, &memh)) { 240 printf(": can't map mem space\n"); 241 return; 242 } 243 244 sc->membase = ia->ia_iomem[0].ir_addr; 245 sc->subregionmask = 246 (1 << (ia->ia_iomem[0].ir_size / TCIC_MEM_PAGESIZE)) - 1; 247 sc->memsize2 = tcic_log2((u_int)ia->ia_iomem[0].ir_size); 248 249 sc->intr_est = ic; 250 sc->pct = (pcmcia_chipset_tag_t) & tcic_isa_functions; 251 252 sc->iot = iot; 253 sc->ioh = ioh; 254 sc->memt = memt; 255 sc->memh = memh; 256 257 /* 258 * determine chip type and initialise some chip type dependend 259 * parameters in softc. 260 */ 261 sc->chipid = tcic_chipid(iot, ioh); 262 sc->validirqs = tcic_validirqs(sc->chipid); 263 264 /* 265 * allocate an irq. interrupts are relatively 266 * scarce but for TCIC controllers very infrequent. 267 */ 268 269 if (ia->ia_nirq < 1) 270 sc->irq = ISACF_IRQ_DEFAULT; 271 else 272 sc->irq = ia->ia_irq[0].ir_irq; 273 if (sc->irq == ISACF_IRQ_DEFAULT) { 274 if (isa_intr_alloc(ic, 275 sc->validirqs & (tcic_isa_intr_alloc_mask & 0xff00), 276 IST_EDGE, &sc->irq)) { 277 printf("\n%s: can't allocate interrupt\n", 278 sc->dev.dv_xname); 279 return; 280 } 281 printf(": using irq %d", sc->irq); 282 } 283 printf("\n"); 284 285 tcic_attach(sc); 286 287 288 /* 289 * XXX mycroft recommends I/O space range 0x400-0xfff. 290 */ 291 292 /* 293 * XXX some hardware doesn't seem to grok addresses in 0x400 range-- 294 * apparently missing a bit or more of address lines. (e.g. 295 * CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI 296 * TravelMate 5000--not clear which is at fault) 297 * 298 * Add a kludge to detect 10 bit wide buses and deal with them, 299 * and also a config file option to override the probe. 300 */ 301 302 #if 0 303 /* 304 * This is what we'd like to use, but... 305 */ 306 sc->iobase = 0x400; 307 sc->iosize = 0xbff; 308 #else 309 /* 310 * ...the above bus width probe doesn't always work. 311 * So, experimentation has shown the following range 312 * to not lose on systems that 0x300-0x3ff loses on 313 * (e.g. the NEC Versa 6030X). 314 */ 315 sc->iobase = 0x330; 316 sc->iosize = 0x0cf; 317 #endif 318 319 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx)\n", 320 sc->dev.dv_xname, (long) sc->iobase, 321 (long) sc->iobase + sc->iosize)); 322 323 if (tcic_isa_alloc_iobase && tcic_isa_alloc_iosize) { 324 sc->iobase = tcic_isa_alloc_iobase; 325 sc->iosize = tcic_isa_alloc_iosize; 326 327 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx " 328 "(config override)\n", sc->dev.dv_xname, (long) sc->iobase, 329 (long) sc->iobase + sc->iosize)); 330 } 331 sc->ih = isa_intr_establish(ic, sc->irq, IST_EDGE, IPL_TTY, 332 tcic_intr, sc); 333 if (sc->ih == NULL) { 334 printf("%s: can't establish interrupt\n", sc->dev.dv_xname); 335 return; 336 } 337 338 tcic_attach_sockets(sc); 339 } 340 341 void * 342 tcic_isa_chip_intr_establish(pch, pf, ipl, fct, arg) 343 pcmcia_chipset_handle_t pch; 344 struct pcmcia_function *pf; 345 int ipl; 346 int (*fct) __P((void *)); 347 void *arg; 348 { 349 struct tcic_handle *h = (struct tcic_handle *) pch; 350 int irq, ist; 351 void *ih; 352 353 DPRINTF(("%s: tcic_isa_chip_intr_establish\n", h->sc->dev.dv_xname)); 354 355 /* XXX should we convert level to pulse? -chb */ 356 if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL) 357 ist = IST_LEVEL; 358 else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE) 359 ist = IST_PULSE; 360 else 361 ist = IST_LEVEL; 362 363 if (isa_intr_alloc(h->sc->intr_est, 364 h->sc->validirqs & tcic_isa_intr_alloc_mask, ist, &irq)) 365 return (NULL); 366 if ((ih = isa_intr_establish(h->sc->intr_est, irq, ist, ipl, 367 fct, arg)) == NULL) 368 return (NULL); 369 370 DPRINTF(("%s: intr estrablished\n", h->sc->dev.dv_xname)); 371 372 h->ih_irq = irq; 373 374 printf("%s: card irq %d\n", h->pcmcia->dv_xname, irq); 375 376 return (ih); 377 } 378 379 void 380 tcic_isa_chip_intr_disestablish(pch, ih) 381 pcmcia_chipset_handle_t pch; 382 void *ih; 383 { 384 struct tcic_handle *h = (struct tcic_handle *) pch; 385 int val, reg; 386 387 DPRINTF(("%s: tcic_isa_chip_intr_disestablish\n", h->sc->dev.dv_xname)); 388 389 h->ih_irq = 0; 390 391 reg = TCIC_IR_SCF1_N(h->sock); 392 val = tcic_read_ind_2(h, reg); 393 val &= ~TCIC_SCF1_IRQ_MASK; 394 tcic_write_ind_2(h, reg, val); 395 396 isa_intr_disestablish(h->sc->intr_est, ih); 397 } 398
Indexes created Mon Nov 03 11:09:54 GMT 2025