puc.c revision 90763
1/* $NetBSD: puc.c,v 1.7 2000/07/29 17:43:38 jlam Exp $ */ 2 3/*- 4 * Copyright (c) 2002 JF Hay. All rights reserved. 5 * Copyright (c) 2000 M. Warner Losh. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29/* 30 * Copyright (c) 1996, 1998, 1999 31 * Christopher G. Demetriou. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. All advertising materials mentioning features or use of this software 42 * must display the following acknowledgement: 43 * This product includes software developed by Christopher G. Demetriou 44 * for the NetBSD Project. 45 * 4. The name of the author may not be used to endorse or promote products 46 * derived from this software without specific prior written permission 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 51 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 53 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 57 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59 60#include <sys/cdefs.h> 61__FBSDID("$FreeBSD: head/sys/dev/puc/puc.c 90763 2002-02-17 09:41:23Z nyan $"); 62 63/* 64 * PCI "universal" communication card device driver, glues com, lpt, 65 * and similar ports to PCI via bridge chip often much larger than 66 * the devices being glued. 67 * 68 * Author: Christopher G. Demetriou, May 14, 1998 (derived from NetBSD 69 * sys/dev/pci/pciide.c, revision 1.6). 70 * 71 * These devices could be (and some times are) described as 72 * communications/{serial,parallel}, etc. devices with known 73 * programming interfaces, but those programming interfaces (in 74 * particular the BAR assignments for devices, etc.) in fact are not 75 * particularly well defined. 76 * 77 * After I/we have seen more of these devices, it may be possible 78 * to generalize some of these bits. In particular, devices which 79 * describe themselves as communications/serial/16[45]50, and 80 * communications/parallel/??? might be attached via direct 81 * 'com' and 'lpt' attachments to pci. 82 */ 83 84#include <sys/param.h> 85#include <sys/systm.h> 86#include <sys/kernel.h> 87#include <sys/bus.h> 88#include <sys/conf.h> 89#include <sys/malloc.h> 90 91#include <machine/bus.h> 92#include <machine/resource.h> 93#include <sys/rman.h> 94 95#if __FreeBSD_version < 500000 96#include <pci/pcireg.h> 97#include <pci/pcivar.h> 98#else 99#include <dev/pci/pcireg.h> 100#include <dev/pci/pcivar.h> 101#endif 102#include <dev/puc/pucvar.h> 103 104#include <opt_puc.h> 105 106struct puc_softc { 107 const struct puc_device_description *sc_desc; 108 109 /* card-global dynamic data */ 110 int barmuxed; 111 int irqrid; 112 struct resource *irqres; 113 void *intr_cookie; 114 115 struct { 116 struct resource *res; 117 } sc_bar_mappings[PUC_MAX_BAR]; 118 119 /* per-port dynamic data */ 120 struct { 121 struct device *dev; 122 /* filled in by bus_setup_intr() */ 123 void (*ihand) __P((void *)); 124 void *ihandarg; 125 } sc_ports[PUC_MAX_PORTS]; 126}; 127 128struct puc_device { 129 struct resource_list resources; 130 u_int serialfreq; 131}; 132 133static int puc_pci_probe(device_t dev); 134static int puc_pci_attach(device_t dev); 135static void puc_intr(void *arg); 136 137static struct resource *puc_alloc_resource(device_t, device_t, int, int *, 138 u_long, u_long, u_long, u_int); 139static int puc_release_resource(device_t, device_t, int, int, 140 struct resource *); 141static int puc_get_resource(device_t, device_t, int, int, u_long *, u_long *); 142static int puc_setup_intr(device_t, device_t, struct resource *, int, 143 void (*)(void *), void *, void **); 144static int puc_teardown_intr(device_t, device_t, struct resource *, 145 void *); 146static int puc_read_ivar(device_t, device_t, int, uintptr_t *); 147 148static const struct puc_device_description *puc_find_description(uint32_t, 149 uint32_t, uint32_t, uint32_t); 150static void puc_config_superio(device_t); 151static void puc_config_win877(struct resource *); 152static int puc_find_free_unit(char *); 153#ifdef PUC_DEBUG 154static void puc_print_win877(bus_space_tag_t, bus_space_handle_t, u_int, 155 u_int); 156static void puc_print_resource_list(struct resource_list *); 157#endif 158 159static int 160puc_pci_probe(device_t dev) 161{ 162 uint32_t v1, v2, d1, d2; 163 const struct puc_device_description *desc; 164 165 if (pci_read_config(dev, PCIR_HEADERTYPE, 1) != 0) 166 return (ENXIO); 167 168 v1 = pci_read_config(dev, PCIR_VENDOR, 2); 169 d1 = pci_read_config(dev, PCIR_DEVICE, 2); 170 v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2); 171 d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2); 172 173 desc = puc_find_description(v1, d1, v2, d2); 174 if (desc == NULL) 175 return (ENXIO); 176 device_set_desc(dev, desc->name); 177 return (0); 178} 179 180static int 181puc_pci_attach(device_t dev) 182{ 183 char *typestr; 184 int bidx, childunit, i, irq_setup, rid; 185 uint32_t v1, v2, d1, d2; 186 struct puc_softc *sc; 187 struct puc_device *pdev; 188 struct resource *res; 189 struct resource_list_entry *rle; 190 191 sc = (struct puc_softc *)device_get_softc(dev); 192 bzero(sc, sizeof(*sc)); 193 v1 = pci_read_config(dev, PCIR_VENDOR, 2); 194 d1 = pci_read_config(dev, PCIR_DEVICE, 2); 195 v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2); 196 d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2); 197 sc->sc_desc = puc_find_description(v1, d1, v2, d2); 198 if (sc->sc_desc == NULL) 199 return (ENXIO); 200 201#ifdef PUC_DEBUG 202 bootverbose = 1; 203 204 printf("puc: name: %s\n", sc->sc_desc->name); 205#endif 206 rid = 0; 207 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 208 RF_ACTIVE | RF_SHAREABLE); 209 if (!res) 210 return (ENXIO); 211 212 sc->irqres = res; 213 sc->irqrid = rid; 214#ifdef PUC_FASTINTR 215 irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res, 216 INTR_TYPE_TTY | INTR_FAST, puc_intr, sc, &sc->intr_cookie); 217#else 218 irq_setup = ENXIO; 219#endif 220 if (irq_setup != 0) 221 irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res, 222 INTR_TYPE_TTY, puc_intr, sc, &sc->intr_cookie); 223 if (irq_setup != 0) 224 return (ENXIO); 225 226 rid = 0; 227 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 228 if (rid == sc->sc_desc->ports[i].bar) 229 sc->barmuxed = 1; 230 rid = sc->sc_desc->ports[i].bar; 231 bidx = PUC_PORT_BAR_INDEX(rid); 232 233 if (sc->sc_bar_mappings[bidx].res != NULL) 234 continue; 235 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 236 0ul, ~0ul, 1, RF_ACTIVE); 237 if (res == NULL) { 238 printf("could not get resource\n"); 239 continue; 240 } 241 sc->sc_bar_mappings[bidx].res = res; 242#ifdef PUC_DEBUG 243 printf("port bst %x, start %x, end %x\n", 244 (u_int)rman_get_bustag(res), (u_int)rman_get_start(res), 245 (u_int)rman_get_end(res)); 246#endif 247 } 248 249 puc_config_superio(dev); 250 251 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 252 rid = sc->sc_desc->ports[i].bar; 253 bidx = PUC_PORT_BAR_INDEX(rid); 254 if (sc->sc_bar_mappings[bidx].res == NULL) 255 continue; 256 257 switch (sc->sc_desc->ports[i].type) { 258 case PUC_PORT_TYPE_COM: 259 typestr = "sio"; 260 break; 261 default: 262 continue; 263 } 264 pdev = malloc(sizeof(struct puc_device), M_DEVBUF, 265 M_NOWAIT | M_ZERO); 266 if (!pdev) 267 continue; 268 resource_list_init(&pdev->resources); 269 270 /* First fake up an IRQ resource. */ 271 resource_list_add(&pdev->resources, SYS_RES_IRQ, 0, 272 rman_get_start(sc->irqres), rman_get_end(sc->irqres), 273 rman_get_end(sc->irqres) - rman_get_start(sc->irqres) + 1); 274 rle = resource_list_find(&pdev->resources, SYS_RES_IRQ, 0); 275 rle->res = sc->irqres; 276 277 /* Now fake an IOPORT resource */ 278 res = sc->sc_bar_mappings[bidx].res; 279 resource_list_add(&pdev->resources, SYS_RES_IOPORT, 0, 280 rman_get_start(res) + sc->sc_desc->ports[i].offset, 281 rman_get_end(res) + sc->sc_desc->ports[i].offset + 8 - 1, 282 8); 283 rle = resource_list_find(&pdev->resources, SYS_RES_IOPORT, 0); 284 285 if (sc->barmuxed == 0) { 286 rle->res = sc->sc_bar_mappings[bidx].res; 287 } else { 288 rle->res = malloc(sizeof(struct resource), M_DEVBUF, 289 M_WAITOK | M_ZERO); 290 if (rle->res == NULL) 291 return (ENOMEM); 292 293 rle->res->r_start = rman_get_start(res) + 294 sc->sc_desc->ports[i].offset; 295 rle->res->r_end = rle->res->r_start + 8 - 1; 296 rle->res->r_bustag = rman_get_bustag(res); 297 bus_space_subregion(rle->res->r_bustag, 298 rman_get_bushandle(res), 299 sc->sc_desc->ports[i].offset, 8, 300 &rle->res->r_bushandle); 301 } 302 303 pdev->serialfreq = sc->sc_desc->ports[i].serialfreq; 304 305 childunit = puc_find_free_unit(typestr); 306 sc->sc_ports[i].dev = device_add_child(dev, typestr, childunit); 307 if (sc->sc_ports[i].dev == NULL) 308 continue; 309 device_set_ivars(sc->sc_ports[i].dev, pdev); 310 device_set_desc(sc->sc_ports[i].dev, sc->sc_desc->name); 311 if (!bootverbose) 312 device_quiet(sc->sc_ports[i].dev); 313#ifdef PUC_DEBUG 314 printf("puc: type %d, bar %x, offset %x\n", 315 sc->sc_desc->ports[i].type, 316 sc->sc_desc->ports[i].bar, 317 sc->sc_desc->ports[i].offset); 318 print_resource_list(&pdev->resources); 319#endif 320 device_probe_and_attach(sc->sc_ports[i].dev); 321 } 322 323#ifdef PUC_DEBUG 324 bootverbose = 0; 325#endif 326 return (0); 327} 328 329/* 330 * This is just an brute force interrupt handler. It just calls all the 331 * registered handlers sequencially. 332 * 333 * Later on we should maybe have a different handler for boards that can 334 * tell us which device generated the interrupt. 335 */ 336static void 337puc_intr(void *arg) 338{ 339 int i; 340 struct puc_softc *sc; 341 342 sc = (struct puc_softc *)arg; 343 for (i = 0; i < PUC_MAX_PORTS; i++) 344 if (sc->sc_ports[i].ihand != NULL) 345 (sc->sc_ports[i].ihand)(sc->sc_ports[i].ihandarg); 346} 347 348static const struct puc_device_description * 349puc_find_description(uint32_t vend, uint32_t prod, uint32_t svend, 350 uint32_t sprod) 351{ 352 int i; 353 354#define checkreg(val, index) \ 355 (((val) & puc_devices[i].rmask[(index)]) == puc_devices[i].rval[(index)]) 356 357 for (i = 0; puc_devices[i].name != NULL; i++) { 358 if (checkreg(vend, PUC_REG_VEND) && 359 checkreg(prod, PUC_REG_PROD) && 360 checkreg(svend, PUC_REG_SVEND) && 361 checkreg(sprod, PUC_REG_SPROD)) 362 return (&puc_devices[i]); 363 } 364 365#undef checkreg 366 367 return (NULL); 368} 369 370/* 371 * It might be possible to make these more generic if we can detect patterns. 372 * For instance maybe if the size of a bar is 0x400 (the old isa space) it 373 * might contain one or more superio chips. 374 */ 375static void 376puc_config_superio(device_t dev) 377{ 378 struct puc_softc *sc = (struct puc_softc *)device_get_softc(dev); 379 380 if (sc->sc_desc->rval[PUC_REG_VEND] == 0x1592 && 381 sc->sc_desc->rval[PUC_REG_PROD] == 0x0781) 382 puc_config_win877(sc->sc_bar_mappings[0].res); 383} 384 385#define rdspio(indx) (bus_space_write_1(bst, bsh, efir, indx), \ 386 bus_space_read_1(bst, bsh, efdr)) 387#define wrspio(indx,data) (bus_space_write_1(bst, bsh, efir, indx), \ 388 bus_space_write_1(bst, bsh, efdr, data)) 389 390#ifdef PUC_DEBUG 391static void 392puc_print_win877(bus_space_tag_t bst, bus_space_handle_t bsh, u_int efir, 393 u_int efdr) 394{ 395 u_char cr00, cr01, cr04, cr09, cr0d, cr14, cr15, cr16, cr17; 396 u_char cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32; 397 398 cr00 = rdspio(0x00); 399 cr01 = rdspio(0x01); 400 cr04 = rdspio(0x04); 401 cr09 = rdspio(0x09); 402 cr0d = rdspio(0x0d); 403 cr14 = rdspio(0x14); 404 cr15 = rdspio(0x15); 405 cr16 = rdspio(0x16); 406 cr17 = rdspio(0x17); 407 cr18 = rdspio(0x18); 408 cr19 = rdspio(0x19); 409 cr24 = rdspio(0x24); 410 cr25 = rdspio(0x25); 411 cr28 = rdspio(0x28); 412 cr2c = rdspio(0x2c); 413 cr31 = rdspio(0x31); 414 cr32 = rdspio(0x32); 415 printf("877T: cr00 %x, cr01 %x, cr04 %x, cr09 %x, cr0d %x, cr14 %x, " 416 "cr15 %x, cr16 %x, cr17 %x, cr18 %x, cr19 %x, cr24 %x, cr25 %x, " 417 "cr28 %x, cr2c %x, cr31 %x, cr32 %x\n", cr00, cr01, cr04, cr09, 418 cr0d, cr14, cr15, cr16, cr17, 419 cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32); 420} 421#endif 422 423static void 424puc_config_win877(struct resource *res) 425{ 426 u_char val; 427 u_int efir, efdr; 428 bus_space_tag_t bst; 429 bus_space_handle_t bsh; 430 431 bst = rman_get_bustag(res); 432 bsh = rman_get_bushandle(res); 433 434 /* configure the first W83877TF */ 435 bus_space_write_1(bst, bsh, 0x250, 0x89); 436 efir = 0x251; 437 efdr = 0x252; 438 val = rdspio(0x09) & 0x0f; 439 if (val != 0x0c) { 440 printf("conf_win877: Oops not a W83877TF\n"); 441 return; 442 } 443 444#ifdef PUC_DEBUG 445 printf("before: "); 446 puc_print_win877(bst, bsh, efir, efdr); 447#endif 448 449 val = rdspio(0x16); 450 val |= 0x04; 451 wrspio(0x16, val); 452 val &= ~0x04; 453 wrspio(0x16, val); 454 455 wrspio(0x24, 0x2e8 >> 2); 456 wrspio(0x25, 0x2f8 >> 2); 457 wrspio(0x17, 0x03); 458 wrspio(0x28, 0x43); 459 460#ifdef PUC_DEBUG 461 printf("after: "); 462 puc_print_win877(bst, bsh, efir, efdr); 463#endif 464 465 bus_space_write_1(bst, bsh, 0x250, 0xaa); 466 467 /* configure the second W83877TF */ 468 bus_space_write_1(bst, bsh, 0x3f0, 0x87); 469 bus_space_write_1(bst, bsh, 0x3f0, 0x87); 470 efir = 0x3f0; 471 efdr = 0x3f1; 472 val = rdspio(0x09) & 0x0f; 473 if (val != 0x0c) { 474 printf("conf_win877: Oops not a W83877TF\n"); 475 return; 476 } 477 478#ifdef PUC_DEBUG 479 printf("before: "); 480 puc_print_win877(bst, bsh, efir, efdr); 481#endif 482 483 val = rdspio(0x16); 484 val |= 0x04; 485 wrspio(0x16, val); 486 val &= ~0x04; 487 wrspio(0x16, val); 488 489 wrspio(0x24, 0x3e8 >> 2); 490 wrspio(0x25, 0x3f8 >> 2); 491 wrspio(0x17, 0x03); 492 wrspio(0x28, 0x43); 493 494#ifdef PUC_DEBUG 495 printf("after: "); 496 puc_print_win877(bst, bsh, efir, efdr); 497#endif 498 499 bus_space_write_1(bst, bsh, 0x3f0, 0xaa); 500} 501 502#undef rdspio 503#undef wrspio 504 505static int puc_find_free_unit(char *name) 506{ 507 devclass_t dc; 508 int start; 509 int unit; 510 511 unit = 0; 512 start = 0; 513 while (resource_int_value(name, unit, "port", &start) == 0 && 514 start > 0) 515 unit++; 516 dc = devclass_find(name); 517 if (dc == NULL) 518 return (-1); 519 while (devclass_get_device(dc, unit)) 520 unit++; 521#ifdef PUC_DEBUG 522 printf("puc: Using %s%d\n", name, unit); 523#endif 524 return (unit); 525} 526 527#ifdef PUC_DEBUG 528static void 529puc_print_resource_list(struct resource_list *rl) 530{ 531 struct resource_list_entry *rle; 532 533 printf("print_resource_list: rl %p\n", rl); 534 SLIST_FOREACH(rle, rl, link) 535 printf("type %x, rid %x\n", rle->type, rle->rid); 536 printf("print_resource_list: end.\n"); 537} 538#endif 539 540static struct resource * 541puc_alloc_resource(device_t dev, device_t child, int type, int *rid, 542 u_long start, u_long end, u_long count, u_int flags) 543{ 544 struct puc_device *pdev; 545 struct resource *retval; 546 struct resource_list *rl; 547 struct resource_list_entry *rle; 548 549 pdev = device_get_ivars(child); 550 rl = &pdev->resources; 551 552#ifdef PUC_DEBUG 553 printf("puc_alloc_resource: pdev %p, looking for t %x, r %x\n", 554 pdev, type, *rid); 555 puc_print_resource_list(rl); 556#endif 557 retval = NULL; 558 rle = resource_list_find(rl, type, *rid); 559 if (rle) { 560 start = rle->start; 561 end = rle->end; 562 count = rle->count; 563#ifdef PUC_DEBUG 564 printf("found rle, %lx, %lx, %lx\n", start, end, count); 565#endif 566 retval = rle->res; 567 } else 568 printf("oops rle is gone\n"); 569 570 return (retval); 571} 572 573static int 574puc_release_resource(device_t dev, device_t child, int type, int rid, 575 struct resource *res) 576{ 577 return (0); 578} 579 580static int 581puc_get_resource(device_t dev, device_t child, int type, int rid, 582 u_long *startp, u_long *countp) 583{ 584 struct puc_device *pdev; 585 struct resource_list *rl; 586 struct resource_list_entry *rle; 587 588 pdev = device_get_ivars(child); 589 rl = &pdev->resources; 590 591#ifdef PUC_DEBUG 592 printf("puc_get_resource: pdev %p, looking for t %x, r %x\n", pdev, 593 type, rid); 594 puc_print_resource_list(rl); 595#endif 596 rle = resource_list_find(rl, type, rid); 597 if (rle) { 598#ifdef PUC_DEBUG 599 printf("found rle %p,", rle); 600#endif 601 if (startp != NULL) 602 *startp = rle->start; 603 if (countp != NULL) 604 *countp = rle->count; 605#ifdef PUC_DEBUG 606 printf(" %lx, %lx\n", rle->start, rle->count); 607#endif 608 return (0); 609 } else 610 printf("oops rle is gone\n"); 611 return (ENXIO); 612} 613 614static int 615puc_setup_intr(device_t dev, device_t child, struct resource *r, int flags, 616 void (*ihand)(void *), void *arg, void **cookiep) 617{ 618 int i; 619 struct puc_softc *sc; 620 621 sc = (struct puc_softc *)device_get_softc(dev); 622 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 623 if (sc->sc_ports[i].dev == child) { 624 if (sc->sc_ports[i].ihand != 0) 625 return (ENXIO); 626 sc->sc_ports[i].ihand = ihand; 627 sc->sc_ports[i].ihandarg = arg; 628 *cookiep = arg; 629 return (0); 630 } 631 } 632 return (ENXIO); 633} 634 635static int 636puc_teardown_intr(device_t dev, device_t child, struct resource *r, 637 void *cookie) 638{ 639 int i; 640 struct puc_softc *sc; 641 642 sc = (struct puc_softc *)device_get_softc(dev); 643 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 644 if (sc->sc_ports[i].dev == child) { 645 sc->sc_ports[i].ihand = NULL; 646 sc->sc_ports[i].ihandarg = NULL; 647 return (0); 648 } 649 } 650 return (ENXIO); 651} 652 653static int 654puc_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 655{ 656 struct puc_device *pdev; 657 658 pdev = device_get_ivars(child); 659 if (pdev == NULL) 660 return (ENOENT); 661 662 switch(index) { 663 case PUC_IVAR_FREQ: 664 *result = pdev->serialfreq; 665 break; 666 default: 667 return (ENOENT); 668 } 669 return (0); 670} 671 672static device_method_t puc_pci_methods[] = { 673 /* Device interface */ 674 DEVMETHOD(device_probe, puc_pci_probe), 675 DEVMETHOD(device_attach, puc_pci_attach), 676 677 DEVMETHOD(bus_alloc_resource, puc_alloc_resource), 678 DEVMETHOD(bus_release_resource, puc_release_resource), 679 DEVMETHOD(bus_get_resource, puc_get_resource), 680 DEVMETHOD(bus_read_ivar, puc_read_ivar), 681 DEVMETHOD(bus_setup_intr, puc_setup_intr), 682 DEVMETHOD(bus_teardown_intr, puc_teardown_intr), 683 DEVMETHOD(bus_print_child, bus_generic_print_child), 684 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 685 { 0, 0 } 686}; 687 688static driver_t puc_pci_driver = { 689 "puc", 690 puc_pci_methods, 691 sizeof(struct puc_softc), 692}; 693 694static devclass_t puc_devclass; 695 696DRIVER_MODULE(puc, pci, puc_pci_driver, puc_devclass, 0, 0); 697