1 /* $NetBSD: tcic2_isa.c,v 1.25 2009/05/12 09:10:16 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 1.25 2009/05/12 09:10:16 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(device_t, cfdata_t, void *); 112 void tcic_isa_attach(device_t, device_t, 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 const 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(device_t parent, cfdata_t match, void *aux) 144 { 145 struct isa_attach_args *ia = aux; 146 bus_space_tag_t iot = ia->ia_iot; 147 bus_space_handle_t ioh, memh; 148 int val, found, msize; 149 150 if (ia->ia_nio < 1) 151 return (0); 152 if (ia->ia_niomem < 1) 153 return (0); 154 155 if (ISA_DIRECT_CONFIG(ia)) 156 return (0); 157 158 /* Disallow wildcarded i/o address. */ 159 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 160 return (0); 161 if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM) 162 return (0); 163 164 if (bus_space_map(iot, ia->ia_io[0].ir_addr, TCIC_IOSIZE, 0, &ioh)) 165 return (0); 166 167 if (ia->ia_iomem[0].ir_size == ISA_UNKNOWN_IOSIZ) 168 msize = TCIC_MEMSIZE; 169 else 170 msize = ia->ia_iomem[0].ir_size; 171 172 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 173 msize, 0, &memh)) { 174 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 175 return (0); 176 } 177 178 DPRINTF(("tcic probing 0x%03x\n", ia->ia_iomem[0].ir_addr)); 179 found = 0; 180 181 /* 182 * First, check for the reserved bits to be zero. 183 */ 184 if (tcic_check_reserved_bits(iot, ioh)) { 185 DPRINTF(("tcic: reserved bits checked OK\n")); 186 /* Second, check whether the we know how to handle the chip. */ 187 if ((val = tcic_chipid(iot, ioh))) { 188 DPRINTF(("tcic id: 0x%02x\n", val)); 189 if (tcic_chipid_known(val)) 190 found++; 191 } 192 } 193 else { 194 DPRINTF(("tcic: reserved bits didn't check OK\n")); 195 } 196 197 bus_space_unmap(iot, ioh, TCIC_IOSIZE); 198 bus_space_unmap(ia->ia_memt, memh, msize); 199 200 if (!found) 201 return (0); 202 203 ia->ia_nio = 1; 204 ia->ia_io[0].ir_size = TCIC_IOSIZE; 205 206 ia->ia_niomem = 1; 207 ia->ia_iomem[0].ir_size = msize; 208 209 /* IRQ is special. */ 210 211 ia->ia_ndrq = 0; 212 213 return (1); 214 } 215 216 void 217 tcic_isa_attach(device_t parent, device_t self, void *aux) 218 { 219 struct tcic_softc *sc = (void *) self; 220 struct isa_attach_args *ia = aux; 221 isa_chipset_tag_t ic = ia->ia_ic; 222 bus_space_tag_t iot = ia->ia_iot; 223 bus_space_tag_t memt = ia->ia_memt; 224 bus_space_handle_t ioh; 225 bus_space_handle_t memh; 226 227 /* Map i/o space. */ 228 if (bus_space_map(iot, ia->ia_io[0].ir_addr, TCIC_IOSIZE, 0, &ioh)) { 229 printf(": can't map i/o space\n"); 230 return; 231 } 232 233 /* Map mem space. */ 234 if (bus_space_map(memt, ia->ia_iomem[0].ir_addr, 235 ia->ia_iomem[0].ir_size, 0, &memh)) { 236 printf(": can't map mem space\n"); 237 return; 238 } 239 240 sc->membase = ia->ia_iomem[0].ir_addr; 241 sc->subregionmask = 242 (1 << (ia->ia_iomem[0].ir_size / TCIC_MEM_PAGESIZE)) - 1; 243 sc->memsize2 = tcic_log2((u_int)ia->ia_iomem[0].ir_size); 244 245 sc->intr_est = ic; 246 sc->pct = (pcmcia_chipset_tag_t) & tcic_isa_functions; 247 248 sc->iot = iot; 249 sc->ioh = ioh; 250 sc->memt = memt; 251 sc->memh = memh; 252 253 /* 254 * determine chip type and initialise some chip type dependend 255 * parameters in softc. 256 */ 257 sc->chipid = tcic_chipid(iot, ioh); 258 sc->validirqs = tcic_validirqs(sc->chipid); 259 260 /* 261 * allocate an irq. interrupts are relatively 262 * scarce but for TCIC controllers very infrequent. 263 */ 264 265 if (ia->ia_nirq < 1) 266 sc->irq = ISA_UNKNOWN_IRQ; 267 else 268 sc->irq = ia->ia_irq[0].ir_irq; 269 if (sc->irq == ISA_UNKNOWN_IRQ) { 270 if (isa_intr_alloc(ic, 271 sc->validirqs & (tcic_isa_intr_alloc_mask & 0xff00), 272 IST_EDGE, &sc->irq)) { 273 aprint_normal("\n"); 274 aprint_error_dev(&sc->dev, "can't allocate interrupt\n"); 275 return; 276 } 277 printf(": using irq %d", sc->irq); 278 } 279 printf("\n"); 280 281 tcic_attach(sc); 282 283 284 /* 285 * XXX mycroft recommends I/O space range 0x400-0xfff. 286 */ 287 288 /* 289 * XXX some hardware doesn't seem to grok addresses in 0x400 range-- 290 * apparently missing a bit or more of address lines. (e.g. 291 * CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI 292 * TravelMate 5000--not clear which is at fault) 293 * 294 * Add a kludge to detect 10 bit wide buses and deal with them, 295 * and also a config file option to override the probe. 296 */ 297 298 #if 0 299 /* 300 * This is what we'd like to use, but... 301 */ 302 sc->iobase = 0x400; 303 sc->iosize = 0xbff; 304 #else 305 /* 306 * ...the above bus width probe doesn't always work. 307 * So, experimentation has shown the following range 308 * to not lose on systems that 0x300-0x3ff loses on 309 * (e.g. the NEC Versa 6030X). 310 */ 311 sc->iobase = 0x330; 312 sc->iosize = 0x0cf; 313 #endif 314 315 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx)\n", 316 device_xname(&sc->dev), (long) sc->iobase, 317 (long) sc->iobase + sc->iosize)); 318 319 if (tcic_isa_alloc_iobase && tcic_isa_alloc_iosize) { 320 sc->iobase = tcic_isa_alloc_iobase; 321 sc->iosize = tcic_isa_alloc_iosize; 322 323 DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx " 324 "(config override)\n", device_xname(&sc->dev), (long) sc->iobase, 325 (long) sc->iobase + sc->iosize)); 326 } 327 sc->ih = isa_intr_establish(ic, sc->irq, IST_EDGE, IPL_TTY, 328 tcic_intr, sc); 329 if (sc->ih == NULL) { 330 printf("%s: can't establish interrupt\n", device_xname(&sc->dev)); 331 return; 332 } 333 334 tcic_attach_sockets(sc); 335 } 336 337 void * 338 tcic_isa_chip_intr_establish(pcmcia_chipset_handle_t pch, struct pcmcia_function *pf, 339 int ipl, int (*fct)(void *), void *arg) 340 { 341 struct tcic_handle *h = (struct tcic_handle *) pch; 342 int irq, ist; 343 void *ih; 344 345 DPRINTF(("%s: tcic_isa_chip_intr_establish\n", device_xname(&h->sc->dev))); 346 347 /* XXX should we convert level to pulse? -chb */ 348 if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL) 349 ist = IST_LEVEL; 350 else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE) 351 ist = IST_PULSE; 352 else 353 ist = IST_LEVEL; 354 355 if (isa_intr_alloc(h->sc->intr_est, 356 h->sc->validirqs & tcic_isa_intr_alloc_mask, ist, &irq)) 357 return (NULL); 358 if ((ih = isa_intr_establish(h->sc->intr_est, irq, ist, ipl, 359 fct, arg)) == NULL) 360 return (NULL); 361 362 DPRINTF(("%s: intr estrablished\n", device_xname(&h->sc->dev))); 363 364 h->ih_irq = irq; 365 366 printf("%s: card irq %d\n", device_xname(h->pcmcia), irq); 367 368 return (ih); 369 } 370 371 void 372 tcic_isa_chip_intr_disestablish(pcmcia_chipset_handle_t pch, void *ih) 373 { 374 struct tcic_handle *h = (struct tcic_handle *) pch; 375 int val, reg; 376 377 DPRINTF(("%s: tcic_isa_chip_intr_disestablish\n", device_xname(&h->sc->dev))); 378 379 h->ih_irq = 0; 380 381 reg = TCIC_IR_SCF1_N(h->sock); 382 val = tcic_read_ind_2(h, reg); 383 val &= ~TCIC_SCF1_IRQ_MASK; 384 tcic_write_ind_2(h, reg, val); 385 386 isa_intr_disestablish(h->sc->intr_est, ih); 387 } 388