tcic2_isa.c revision 1.20
1 /* $NetBSD: tcic2_isa.c,v 1.20 2008/04/08 20:08:50 cegger 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 1.20 2008/04/08 20:08:50 cegger Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/extent.h> 41 #include <sys/malloc.h> 42 43 #include <sys/bus.h> 44 #include <sys/intr.h> 45 46 #include <dev/isa/isareg.h> 47 #include <dev/isa/isavar.h> 48 49 #include <dev/pcmcia/pcmciareg.h> 50 #include <dev/pcmcia/pcmciavar.h> 51 #include <dev/pcmcia/pcmciachip.h> 52 53 #include <dev/ic/tcic2reg.h> 54 #include <dev/ic/tcic2var.h> 55 56 /***************************************************************************** 57 * Configurable parameters. 58 *****************************************************************************/ 59 60 #include "opt_tcic_isa_alloc_iobase.h" 61 #include "opt_tcic_isa_alloc_iosize.h" 62 #include "opt_tcic_isa_intr_alloc_mask.h" 63 64 /* 65 * Default I/O allocation range. If both are set to non-zero, these 66 * values will be used instead. Otherwise, the code attempts to probe 67 * the bus width. Systems with 10 address bits should use 0x300 and 0xff. 68 * Systems with 12 address bits (most) should use 0x400 and 0xbff. 69 */ 70 71 #ifndef TCIC_ISA_ALLOC_IOBASE 72 #define TCIC_ISA_ALLOC_IOBASE 0 73 #endif 74 75 #ifndef TCIC_ISA_ALLOC_IOSIZE 76 #define TCIC_ISA_ALLOC_IOSIZE 0 77 #endif 78 79 int tcic_isa_alloc_iobase = TCIC_ISA_ALLOC_IOBASE; 80 int tcic_isa_alloc_iosize = TCIC_ISA_ALLOC_IOSIZE; 81 82 /* 83 * Default IRQ allocation bitmask. This defines the range of allowable 84 * IRQs for PCMCIA slots. Useful if order of probing would screw up other 85 * devices, or if TCIC hardware/cards have trouble with certain interrupt 86 * lines. 87 * 88 * We disable IRQ 10 by default, since some common laptops (namely, the 89 * NEC Versa series) reserve IRQ 10 for the docking station SCSI interface. 90 * 91 * XXX Do we care about this? the Versa doesn't use a tcic. -chb 92 */ 93 94 #ifndef TCIC_ISA_INTR_ALLOC_MASK 95 #define TCIC_ISA_INTR_ALLOC_MASK 0xffff 96 #endif 97 98 int tcic_isa_intr_alloc_mask = TCIC_ISA_INTR_ALLOC_MASK; 99 100 /***************************************************************************** 101 * End of configurable parameters. 102 *****************************************************************************/ 103 104 #ifdef TCICISADEBUG 105 int tcic_isa_debug = 1; 106 #define DPRINTF(arg) if (tcic_isa_debug) printf arg; 107 #else 108 #define DPRINTF(arg) 109 #endif 110 111 int tcic_isa_probe(struct device *, struct cfdata *, void *); 112 void tcic_isa_attach(struct device *, struct device *, void *); 113 114 void *tcic_isa_chip_intr_establish(pcmcia_chipset_handle_t, 115 struct pcmcia_function *, int, int (*) (void *), void *); 116 void tcic_isa_chip_intr_disestablish(pcmcia_chipset_handle_t, void *); 117 118 CFATTACH_DECL(tcic_isa, sizeof(struct tcic_softc), 119 tcic_isa_probe, tcic_isa_attach, NULL, NULL); 120 121 static struct pcmcia_chip_functions tcic_isa_functions = { 122 tcic_chip_mem_alloc, 123 tcic_chip_mem_free, 124 tcic_chip_mem_map, 125 tcic_chip_mem_unmap, 126 127 tcic_chip_io_alloc, 128 tcic_chip_io_free, 129 tcic_chip_io_map, 130 tcic_chip_io_unmap, 131 132 tcic_isa_chip_intr_establish, 133 tcic_isa_chip_intr_disestablish, 134 135 tcic_chip_socket_enable, 136 tcic_chip_socket_disable, 137 tcic_chip_socket_settype, 138 139 NULL, /* card_detect */ 140 }; 141 142 int 143 tcic_isa_probe(struct device *parent, struct cfdata *match, 144 void *aux) 145 { 146 struct isa_attach_args *ia = aux; 147 bus_space_tag_t iot = ia->ia_iot; 148 bus_space_handle_t ioh, memh; 149 int val, found, msize; 150 151 if (ia->ia_nio < 1) 152 return (0); 153 if (ia->ia_niomem < 1) 154 return (0); 155 156 if (ISA_DIRECT_CONFIG(ia)) 157 return (0); 158 159 /* Disallow wildcarded i/o address. */ 160 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 161 return (0); 162 if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM) 163 return (0); 164 165 if (bus_space_map(iot, ia->ia_io[0].ir_addr, TCIC_IOSIZE, 0, &ioh)) 166 return (0); 167 168 if (ia->ia_iomem[0].ir_size == ISA_UNKNOWN_IOSIZ) 169 msize = TCIC_MEMSIZE; 170 else 171 msize = ia->ia_iomem[0].ir_size; 172 173 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 174 msize, 0, &memh)) { 175 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 176 return (0); 177 } 178 179 DPRINTF(("tcic probing 0x%03x\n", ia->ia_iomem[0].ir_addr)); 180 found = 0; 181 182 /* 183 * First, check for the reserved bits to be zero. 184 */ 185 if (tcic_check_reserved_bits(iot, ioh)) { 186 DPRINTF(("tcic: reserved bits checked OK\n")); 187 /* Second, check whether the we know how to handle the chip. */ 188 if ((val = tcic_chipid(iot, ioh))) { 189 DPRINTF(("tcic id: 0x%02x\n", val)); 190 if (tcic_chipid_known(val)) 191 found++; 192 } 193 } 194 else { 195 DPRINTF(("tcic: reserved bits didn't check OK\n")); 196 } 197 198 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 199 bus_space_unmap(ia->ia_memt, memh, msize); 200 201 if (!found) 202 return (0); 203 204 ia->ia_nio = 1; 205 ia->ia_io[0].ir_size = TCIC_IOSIZE; 206 207 ia->ia_niomem = 1; 208 ia->ia_iomem[0].ir_size = msize; 209 210 /* IRQ is special. */ 211 212 ia->ia_ndrq = 0; 213 214 return (1); 215 } 216 217 void 218 tcic_isa_attach(struct device *parent, struct device *self, void *aux) 219 { 220 struct tcic_softc *sc = (void *) self; 221 struct isa_attach_args *ia = aux; 222 isa_chipset_tag_t ic = ia->ia_ic; 223 bus_space_tag_t iot = ia->ia_iot; 224 bus_space_tag_t memt = ia->ia_memt; 225 bus_space_handle_t ioh; 226 bus_space_handle_t memh; 227 228 /* Map i/o space. */ 229 if (bus_space_map(iot, ia->ia_io[0].ir_addr, TCIC_IOSIZE, 0, &ioh)) { 230 printf(": can't map i/o space\n"); 231 return; 232 } 233 234 /* Map mem space. */ 235 if (bus_space_map(memt, ia->ia_iomem[0].ir_addr, 236 ia->ia_iomem[0].ir_size, 0, &memh)) { 237 printf(": can't map mem space\n"); 238 return; 239 } 240 241 sc->membase = ia->ia_iomem[0].ir_addr; 242 sc->subregionmask = 243 (1 << (ia->ia_iomem[0].ir_size / TCIC_MEM_PAGESIZE)) - 1; 244 sc->memsize2 = tcic_log2((u_int)ia->ia_iomem[0].ir_size); 245 246 sc->intr_est = ic; 247 sc->pct = (pcmcia_chipset_tag_t) & tcic_isa_functions; 248 249 sc->iot = iot; 250 sc->ioh = ioh; 251 sc->memt = memt; 252 sc->memh = memh; 253 254 /* 255 * determine chip type and initialise some chip type dependend 256 * parameters in softc. 257 */ 258 sc->chipid = tcic_chipid(iot, ioh); 259 sc->validirqs = tcic_validirqs(sc->chipid); 260 261 /* 262 * allocate an irq. interrupts are relatively 263 * scarce but for TCIC controllers very infrequent. 264 */ 265 266 if (ia->ia_nirq < 1) 267 sc->irq = ISA_UNKNOWN_IRQ; 268 else 269 sc->irq = ia->ia_irq[0].ir_irq; 270 if (sc->irq == ISA_UNKNOWN_IRQ) { 271 if (isa_intr_alloc(ic, 272 sc->validirqs & (tcic_isa_intr_alloc_mask & 0xff00), 273 IST_EDGE, &sc->irq)) { 274 aprint_normal("\n"); 275 aprint_error_dev(&sc->dev, "can't allocate interrupt\n"); 276 return; 277 } 278 printf(": using irq %d", sc->irq); 279 } 280 printf("\n"); 281 282 tcic_attach(sc); 283 284 285 /* 286 * XXX mycroft recommends I/O space range 0x400-0xfff. 287 */ 288 289 /* 290 * XXX some hardware doesn't seem to grok addresses in 0x400 range-- 291 * apparently missing a bit or more of address lines. (e.g. 292 * CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI 293 * TravelMate 5000--not clear which is at fault) 294 * 295 * Add a kludge to detect 10 bit wide buses and deal with them, 296 * and also a config file option to override the probe. 297 */ 298 299 #if 0 300 /* 301 * This is what we'd like to use, but... 302 */ 303 sc->iobase = 0x400; 304 sc->iosize = 0xbff; 305 #else 306 /* 307 * ...the above bus width probe doesn't always work. 308 * So, experimentation has shown the following range 309 * to not lose on systems that 0x300-0x3ff loses on 310 * (e.g. the NEC Versa 6030X). 311 */ 312 sc->iobase = 0x330; 313 sc->iosize = 0x0cf; 314 #endif 315 316 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx)\n", 317 device_xname(&sc->dev), (long) sc->iobase, 318 (long) sc->iobase + sc->iosize)); 319 320 if (tcic_isa_alloc_iobase && tcic_isa_alloc_iosize) { 321 sc->iobase = tcic_isa_alloc_iobase; 322 sc->iosize = tcic_isa_alloc_iosize; 323 324 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx " 325 "(config override)\n", device_xname(&sc->dev), (long) sc->iobase, 326 (long) sc->iobase + sc->iosize)); 327 } 328 sc->ih = isa_intr_establish(ic, sc->irq, IST_EDGE, IPL_TTY, 329 tcic_intr, sc); 330 if (sc->ih == NULL) { 331 printf("%s: can't establish interrupt\n", device_xname(&sc->dev)); 332 return; 333 } 334 335 tcic_attach_sockets(sc); 336 } 337 338 void * 339 tcic_isa_chip_intr_establish(pch, pf, ipl, fct, arg) 340 pcmcia_chipset_handle_t pch; 341 struct pcmcia_function *pf; 342 int ipl; 343 int (*fct)(void *); 344 void *arg; 345 { 346 struct tcic_handle *h = (struct tcic_handle *) pch; 347 int irq, ist; 348 void *ih; 349 350 DPRINTF(("%s: tcic_isa_chip_intr_establish\n", device_xname(&h->sc->dev))); 351 352 /* XXX should we convert level to pulse? -chb */ 353 if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL) 354 ist = IST_LEVEL; 355 else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE) 356 ist = IST_PULSE; 357 else 358 ist = IST_LEVEL; 359 360 if (isa_intr_alloc(h->sc->intr_est, 361 h->sc->validirqs & tcic_isa_intr_alloc_mask, ist, &irq)) 362 return (NULL); 363 if ((ih = isa_intr_establish(h->sc->intr_est, irq, ist, ipl, 364 fct, arg)) == NULL) 365 return (NULL); 366 367 DPRINTF(("%s: intr estrablished\n", device_xname(&h->sc->dev))); 368 369 h->ih_irq = irq; 370 371 printf("%s: card irq %d\n", device_xname(h->pcmcia), irq); 372 373 return (ih); 374 } 375 376 void 377 tcic_isa_chip_intr_disestablish(pch, ih) 378 pcmcia_chipset_handle_t pch; 379 void *ih; 380 { 381 struct tcic_handle *h = (struct tcic_handle *) pch; 382 int val, reg; 383 384 DPRINTF(("%s: tcic_isa_chip_intr_disestablish\n", device_xname(&h->sc->dev))); 385 386 h->ih_irq = 0; 387 388 reg = TCIC_IR_SCF1_N(h->sock); 389 val = tcic_read_ind_2(h, reg); 390 val &= ~TCIC_SCF1_IRQ_MASK; 391 tcic_write_ind_2(h, reg, val); 392 393 isa_intr_disestablish(h->sc->intr_est, ih); 394 } 395
Indexes created Mon Nov 03 11:09:54 GMT 2025