1 /* $OpenBSD: tcic2_isa.c,v 1.11 2022/04/06 18:59:29 naddy Exp $ */ 2 /* $NetBSD: tcic2_isa.c,v 1.2 1999/04/08 16:14:29 bad Exp $ */ 3 4 #undef TCICISADEBUG 5 6 /* 7 * 8 * Copyright (c) 1998, 1999 Christoph Badura. All rights reserved. 9 * Copyright (c) 1997 Marc Horowitz. All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Marc Horowitz. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 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 <machine/bus.h> 45 #include <machine/intr.h> 46 47 #include <dev/isa/isareg.h> 48 #include <dev/isa/isavar.h> 49 50 #include <dev/pcmcia/pcmciareg.h> 51 #include <dev/pcmcia/pcmciavar.h> 52 #include <dev/pcmcia/pcmciachip.h> 53 54 #include <dev/ic/tcic2reg.h> 55 #include <dev/ic/tcic2var.h> 56 57 /***************************************************************************** 58 * Configurable parameters. 59 *****************************************************************************/ 60 61 /* 62 * Default I/O allocation range. If both are set to non-zero, these 63 * values will be used instead. Otherwise, the code attempts to probe 64 * the bus width. Systems with 10 address bits should use 0x300 and 0xff. 65 * Systems with 12 address bits (most) should use 0x400 and 0xbff. 66 */ 67 68 #ifndef TCIC_ISA_ALLOC_IOBASE 69 #define TCIC_ISA_ALLOC_IOBASE 0 70 #endif 71 72 #ifndef TCIC_ISA_ALLOC_IOSIZE 73 #define TCIC_ISA_ALLOC_IOSIZE 0 74 #endif 75 76 int tcic_isa_alloc_iobase = TCIC_ISA_ALLOC_IOBASE; 77 int tcic_isa_alloc_iosize = TCIC_ISA_ALLOC_IOSIZE; 78 79 /* 80 * Default IRQ allocation bitmask. This defines the range of allowable 81 * IRQs for PCMCIA slots. Useful if order of probing would screw up other 82 * devices, or if TCIC hardware/cards have trouble with certain interrupt 83 * lines. 84 * 85 * We disable IRQ 10 by default, since some common laptops (namely, the 86 * NEC Versa series) reserve IRQ 10 for the docking station SCSI interface. 87 * 88 * XXX Do we care about this? the Versa doesn't use a tcic. -chb 89 */ 90 91 #ifndef TCIC_ISA_INTR_ALLOC_MASK 92 #define TCIC_ISA_INTR_ALLOC_MASK 0xffff 93 #endif 94 95 int tcic_isa_intr_alloc_mask = TCIC_ISA_INTR_ALLOC_MASK; 96 97 /***************************************************************************** 98 * End of configurable parameters. 99 *****************************************************************************/ 100 101 #ifdef TCICISADEBUG 102 int tcic_isa_debug = 1; 103 #define DPRINTF(arg) if (tcic_isa_debug) printf arg; 104 #else 105 #define DPRINTF(arg) 106 #endif 107 108 int tcic_isa_probe(struct device *, void *, void *); 109 void tcic_isa_attach(struct device *, struct device *, void *); 110 111 void *tcic_isa_chip_intr_establish(pcmcia_chipset_handle_t, 112 struct pcmcia_function *, int, int (*) (void *), void *, char *); 113 void tcic_isa_chip_intr_disestablish(pcmcia_chipset_handle_t, void *); 114 const char *tcic_isa_chip_intr_string(pcmcia_chipset_handle_t, void *); 115 116 const struct cfattach tcic_isa_ca = { 117 sizeof(struct tcic_softc), tcic_isa_probe, tcic_isa_attach 118 }; 119 120 static struct pcmcia_chip_functions tcic_isa_functions = { 121 tcic_chip_mem_alloc, 122 tcic_chip_mem_free, 123 tcic_chip_mem_map, 124 tcic_chip_mem_unmap, 125 126 tcic_chip_io_alloc, 127 tcic_chip_io_free, 128 tcic_chip_io_map, 129 tcic_chip_io_unmap, 130 131 tcic_isa_chip_intr_establish, 132 tcic_isa_chip_intr_disestablish, 133 tcic_isa_chip_intr_string, 134 135 tcic_chip_socket_enable, 136 tcic_chip_socket_disable, 137 }; 138 139 int 140 tcic_isa_probe(struct device *parent, void *match, void *aux) 141 { 142 struct isa_attach_args *ia = aux; 143 bus_space_tag_t iot = ia->ia_iot; 144 bus_space_handle_t ioh, memh; 145 int val, found; 146 147 /* Disallow wildcarded i/o address. */ 148 if (ia->ia_iobase == -1 /* ISACF_PORT_DEFAULT */) 149 return (0); 150 151 if (bus_space_map(iot, ia->ia_iobase, TCIC_IOSIZE, 0, &ioh)) 152 return (0); 153 154 if (ia->ia_msize == 0) 155 ia->ia_msize = TCIC_MEMSIZE; 156 157 if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) 158 return (0); 159 160 DPRINTF(("tcic probing 0x%03x\n", ia->ia_iobase)); 161 found = 0; 162 163 /* 164 * First, check for the reserved bits to be zero. 165 */ 166 if (tcic_check_reserved_bits(iot, ioh)) { 167 DPRINTF(("tcic: reserved bits checked OK\n")); 168 /* Second, check whether the we know how to handle the chip. */ 169 if ((val = tcic_chipid(iot, ioh))) { 170 DPRINTF(("tcic id: 0x%02x\n", val)); 171 if (tcic_chipid_known(val)) 172 found++; 173 } 174 } 175 else 176 DPRINTF(("tcic: reserved bits didn't check OK\n")); 177 178 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 179 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 180 181 if (!found) 182 return (0); 183 184 ia->ia_iosize = TCIC_IOSIZE; 185 186 return (1); 187 } 188 189 void 190 tcic_isa_attach(struct device *parent, struct device *self, void *aux) 191 { 192 struct tcic_softc *sc = (void *) self; 193 struct isa_attach_args *ia = aux; 194 isa_chipset_tag_t ic = ia->ia_ic; 195 bus_space_tag_t iot = ia->ia_iot; 196 bus_space_tag_t memt = ia->ia_memt; 197 bus_space_handle_t ioh; 198 bus_space_handle_t memh; 199 200 /* Map i/o space. */ 201 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 202 printf(": can't map i/o space\n"); 203 return; 204 } 205 206 /* Map mem space. */ 207 if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh)) { 208 printf(": can't map mem space\n"); 209 return; 210 } 211 212 sc->membase = ia->ia_maddr; 213 sc->subregionmask = (1 << (ia->ia_msize / TCIC_MEM_PAGESIZE)) - 1; 214 sc->memsize2 = tcic_log2((u_int)ia->ia_msize); 215 216 sc->intr_est = ic; 217 sc->pct = (pcmcia_chipset_tag_t) &tcic_isa_functions; 218 219 sc->iot = iot; 220 sc->ioh = ioh; 221 sc->memt = memt; 222 sc->memh = memh; 223 224 /* 225 * determine chip type and initialise some chip type dependent 226 * parameters in softc. 227 */ 228 sc->chipid = tcic_chipid(iot, ioh); 229 sc->validirqs = tcic_validirqs(sc->chipid); 230 231 /* 232 * allocate an irq. interrupts are relatively 233 * scarce but for TCIC controllers very infrequent. 234 */ 235 236 if ((sc->irq = ia->ia_irq) == IRQUNK) { 237 if (isa_intr_alloc(ic, 238 sc->validirqs & (tcic_isa_intr_alloc_mask & 0xff00), 239 IST_EDGE, &sc->irq)) { 240 printf("\n%s: can't allocate interrupt\n", 241 sc->dev.dv_xname); 242 return; 243 } 244 printf(": using irq %d", sc->irq); 245 } 246 printf("\n"); 247 248 tcic_attach(sc); 249 250 251 /* 252 * XXX mycroft recommends I/O space range 0x400-0xfff. 253 */ 254 255 /* 256 * XXX some hardware doesn't seem to grok addresses in 0x400 range-- 257 * apparently missing a bit or more of address lines. (e.g. 258 * CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI 259 * TravelMate 5000--not clear which is at fault) 260 * 261 * Add a kludge to detect 10 bit wide buses and deal with them, 262 * and also a config file option to override the probe. 263 */ 264 265 #if 0 266 /* 267 * This is what we'd like to use, but... 268 */ 269 sc->iobase = 0x400; 270 sc->iosize = 0xbff; 271 #else 272 /* 273 * ...the above bus width probe doesn't always work. 274 * So, experimentation has shown the following range 275 * to not lose on systems that 0x300-0x3ff loses on 276 * (e.g. the NEC Versa 6030X). 277 */ 278 sc->iobase = 0x330; 279 sc->iosize = 0x0cf; 280 #endif 281 282 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx)\n", 283 sc->dev.dv_xname, (long) sc->iobase, 284 (long) sc->iobase + sc->iosize)); 285 286 if (tcic_isa_alloc_iobase && tcic_isa_alloc_iosize) { 287 sc->iobase = tcic_isa_alloc_iobase; 288 sc->iosize = tcic_isa_alloc_iosize; 289 290 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx " 291 "(config override)\n", sc->dev.dv_xname, (long) sc->iobase, 292 (long) sc->iobase + sc->iosize)); 293 } 294 sc->ih = isa_intr_establish(ic, sc->irq, IST_EDGE, IPL_TTY, 295 tcic_intr, sc, sc->dev.dv_xname); 296 if (sc->ih == NULL) { 297 printf("%s: can't establish interrupt\n", sc->dev.dv_xname); 298 return; 299 } 300 301 tcic_attach_sockets(sc); 302 } 303 304 void * 305 tcic_isa_chip_intr_establish(pcmcia_chipset_handle_t pch, 306 struct pcmcia_function *pf, int ipl, int (*fct)(void *), void *arg, 307 char *xname) 308 { 309 struct tcic_handle *h = (struct tcic_handle *) pch; 310 int irq, ist, val, reg; 311 void *ih; 312 int irqmap[] = { 313 0, 0, 0, TCIC_SCF1_IRQ3, TCIC_SCF1_IRQ4, TCIC_SCF1_IRQ5, 314 TCIC_SCF1_IRQ6, TCIC_SCF1_IRQ7, 0, TCIC_SCF1_IRQ9, 315 TCIC_SCF1_IRQ10, TCIC_SCF1_IRQ11, TCIC_SCF1_IRQ12, 0, 316 TCIC_SCF1_IRQ14, TCIC_SCF1_IRQ15 317 }; 318 319 DPRINTF(("%s: tcic_isa_chip_intr_establish\n", h->sc->dev.dv_xname)); 320 321 /* XXX should we convert level to pulse? -chb */ 322 if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL) 323 ist = IST_LEVEL; 324 else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE) 325 ist = IST_PULSE; 326 else 327 ist = IST_LEVEL; 328 329 if (isa_intr_alloc(h->sc->intr_est, 330 h->sc->validirqs & tcic_isa_intr_alloc_mask, ist, &irq)) 331 return (NULL); 332 if ((ih = isa_intr_establish(h->sc->intr_est, irq, ist, ipl, 333 fct, arg, h->pcmcia->dv_xname)) == NULL) 334 return (NULL); 335 336 DPRINTF(("%s: intr established\n", h->sc->dev.dv_xname)); 337 338 h->ih_irq = irq; 339 340 reg = TCIC_IR_SCF1_N(h->sock); 341 val = (tcic_read_ind_2(h, reg) & (~TCIC_SCF1_IRQ_MASK)) | irqmap[irq]; 342 tcic_write_ind_2(h, reg, val); 343 344 printf(" irq %d", irq); 345 return (ih); 346 } 347 348 void 349 tcic_isa_chip_intr_disestablish(pcmcia_chipset_handle_t pch, void *ih) 350 { 351 struct tcic_handle *h = (struct tcic_handle *) pch; 352 int val, reg; 353 354 DPRINTF(("%s: tcic_isa_chip_intr_disestablish\n", h->sc->dev.dv_xname)); 355 356 h->ih_irq = 0; 357 358 reg = TCIC_IR_SCF1_N(h->sock); 359 val = tcic_read_ind_2(h, reg); 360 val &= ~TCIC_SCF1_IRQ_MASK; 361 tcic_write_ind_2(h, reg, val); 362 363 isa_intr_disestablish(h->sc->intr_est, ih); 364 } 365 366 const char * 367 tcic_isa_chip_intr_string(pcmcia_chipset_handle_t pch, void *ih) 368 { 369 struct tcic_handle *h = (struct tcic_handle *) pch; 370 static char irqstr[64]; 371 372 if (ih == NULL) 373 snprintf(irqstr, sizeof(irqstr), "couldn't establish interrupt"); 374 else 375 snprintf(irqstr, sizeof(irqstr), "irq %d", h->ih_irq); 376 return (irqstr); 377 } 378