puc.c revision 100425
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 100425 2002-07-21 04:23:40Z imp $"); 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#include <dev/pci/pcireg.h> 96#include <dev/pci/pcivar.h> 97#include <dev/puc/pucvar.h> 98 99#include <opt_puc.h> 100 101struct puc_softc { 102 const struct puc_device_description *sc_desc; 103 104 /* card-global dynamic data */ 105 int barmuxed; 106 int irqrid; 107 struct resource *irqres; 108 void *intr_cookie; 109 110 struct { 111 struct resource *res; 112 } sc_bar_mappings[PUC_MAX_BAR]; 113 114 /* per-port dynamic data */ 115 struct { 116 struct device *dev; 117 /* filled in by bus_setup_intr() */ 118 void (*ihand)(void *); 119 void *ihandarg; 120 } sc_ports[PUC_MAX_PORTS]; 121}; 122 123struct puc_device { 124 struct resource_list resources; 125 u_int serialfreq; 126}; 127 128static int puc_pci_probe(device_t dev); 129static int puc_pci_attach(device_t dev); 130static void puc_intr(void *arg); 131 132static struct resource *puc_alloc_resource(device_t, device_t, int, int *, 133 u_long, u_long, u_long, u_int); 134static int puc_release_resource(device_t, device_t, int, int, 135 struct resource *); 136static int puc_get_resource(device_t, device_t, int, int, u_long *, u_long *); 137static int puc_setup_intr(device_t, device_t, struct resource *, int, 138 void (*)(void *), void *, void **); 139static int puc_teardown_intr(device_t, device_t, struct resource *, 140 void *); 141static int puc_read_ivar(device_t, device_t, int, uintptr_t *); 142 143static const struct puc_device_description *puc_find_description(uint32_t, 144 uint32_t, uint32_t, uint32_t); 145static void puc_config_superio(device_t); 146static void puc_config_win877(struct resource *); 147static int puc_find_free_unit(char *); 148#ifdef PUC_DEBUG 149static void puc_print_win877(bus_space_tag_t, bus_space_handle_t, u_int, 150 u_int); 151static void puc_print_resource_list(struct resource_list *); 152#endif 153 154static int 155puc_pci_probe(device_t dev) 156{ 157 uint32_t v1, v2, d1, d2; 158 const struct puc_device_description *desc; 159 160 if ((pci_read_config(dev, PCIR_HEADERTYPE, 1) & 0x7f) != 0) 161 return (ENXIO); 162 163 v1 = pci_read_config(dev, PCIR_VENDOR, 2); 164 d1 = pci_read_config(dev, PCIR_DEVICE, 2); 165 v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2); 166 d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2); 167 168 desc = puc_find_description(v1, d1, v2, d2); 169 if (desc == NULL) 170 return (ENXIO); 171 device_set_desc(dev, desc->name); 172 return (0); 173} 174 175static int 176puc_pci_attach(device_t dev) 177{ 178 char *typestr; 179 int bidx, childunit, i, irq_setup, rid; 180 uint32_t v1, v2, d1, d2; 181 struct puc_softc *sc; 182 struct puc_device *pdev; 183 struct resource *res; 184 struct resource_list_entry *rle; 185 186 sc = (struct puc_softc *)device_get_softc(dev); 187 bzero(sc, sizeof(*sc)); 188 v1 = pci_read_config(dev, PCIR_VENDOR, 2); 189 d1 = pci_read_config(dev, PCIR_DEVICE, 2); 190 v2 = pci_read_config(dev, PCIR_SUBVEND_0, 2); 191 d2 = pci_read_config(dev, PCIR_SUBDEV_0, 2); 192 sc->sc_desc = puc_find_description(v1, d1, v2, d2); 193 if (sc->sc_desc == NULL) 194 return (ENXIO); 195 196#ifdef PUC_DEBUG 197 bootverbose = 1; 198 199 printf("puc: name: %s\n", sc->sc_desc->name); 200#endif 201 rid = 0; 202 res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 203 RF_ACTIVE | RF_SHAREABLE); 204 if (!res) 205 return (ENXIO); 206 207 sc->irqres = res; 208 sc->irqrid = rid; 209#ifdef PUC_FASTINTR 210 irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res, 211 INTR_TYPE_TTY | INTR_FAST, puc_intr, sc, &sc->intr_cookie); 212#else 213 irq_setup = ENXIO; 214#endif 215 if (irq_setup != 0) 216 irq_setup = BUS_SETUP_INTR(device_get_parent(dev), dev, res, 217 INTR_TYPE_TTY, puc_intr, sc, &sc->intr_cookie); 218 if (irq_setup != 0) 219 return (ENXIO); 220 221 rid = 0; 222 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 223 if (rid == sc->sc_desc->ports[i].bar) 224 sc->barmuxed = 1; 225 rid = sc->sc_desc->ports[i].bar; 226 bidx = PUC_PORT_BAR_INDEX(rid); 227 228 if (sc->sc_bar_mappings[bidx].res != NULL) 229 continue; 230 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 231 0ul, ~0ul, 1, RF_ACTIVE); 232 if (res == NULL) { 233 printf("could not get resource\n"); 234 continue; 235 } 236 sc->sc_bar_mappings[bidx].res = res; 237#ifdef PUC_DEBUG 238 printf("port bst %x, start %x, end %x\n", 239 (u_int)rman_get_bustag(res), (u_int)rman_get_start(res), 240 (u_int)rman_get_end(res)); 241#endif 242 } 243 244 puc_config_superio(dev); 245 246 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 247 rid = sc->sc_desc->ports[i].bar; 248 bidx = PUC_PORT_BAR_INDEX(rid); 249 if (sc->sc_bar_mappings[bidx].res == NULL) 250 continue; 251 252 switch (sc->sc_desc->ports[i].type) { 253 case PUC_PORT_TYPE_COM: 254 typestr = "sio"; 255 break; 256 default: 257 continue; 258 } 259 pdev = malloc(sizeof(struct puc_device), M_DEVBUF, 260 M_NOWAIT | M_ZERO); 261 if (!pdev) 262 continue; 263 resource_list_init(&pdev->resources); 264 265 /* First fake up an IRQ resource. */ 266 resource_list_add(&pdev->resources, SYS_RES_IRQ, 0, 267 rman_get_start(sc->irqres), rman_get_end(sc->irqres), 268 rman_get_end(sc->irqres) - rman_get_start(sc->irqres) + 1); 269 rle = resource_list_find(&pdev->resources, SYS_RES_IRQ, 0); 270 rle->res = sc->irqres; 271 272 /* Now fake an IOPORT resource */ 273 res = sc->sc_bar_mappings[bidx].res; 274 resource_list_add(&pdev->resources, SYS_RES_IOPORT, 0, 275 rman_get_start(res) + sc->sc_desc->ports[i].offset, 276 rman_get_end(res) + sc->sc_desc->ports[i].offset + 8 - 1, 277 8); 278 rle = resource_list_find(&pdev->resources, SYS_RES_IOPORT, 0); 279 280 if (sc->barmuxed == 0) { 281 rle->res = sc->sc_bar_mappings[bidx].res; 282 } else { 283 rle->res = malloc(sizeof(struct resource), M_DEVBUF, 284 M_WAITOK | M_ZERO); 285 if (rle->res == NULL) { 286 free(pdev, M_DEVBUF); 287 return (ENOMEM); 288 } 289 290 rle->res->r_start = rman_get_start(res) + 291 sc->sc_desc->ports[i].offset; 292 rle->res->r_end = rle->res->r_start + 8 - 1; 293 rle->res->r_bustag = rman_get_bustag(res); 294 bus_space_subregion(rle->res->r_bustag, 295 rman_get_bushandle(res), 296 sc->sc_desc->ports[i].offset, 8, 297 &rle->res->r_bushandle); 298 } 299 300 pdev->serialfreq = sc->sc_desc->ports[i].serialfreq; 301 302 childunit = puc_find_free_unit(typestr); 303 sc->sc_ports[i].dev = device_add_child(dev, typestr, childunit); 304 if (sc->sc_ports[i].dev == NULL) { 305 if (sc->barmuxed) { 306 bus_space_unmap(rman_get_bustag(rle->res), 307 rman_get_bushandle(rle->res), 308 8); 309 free(rle->res, M_DEVBUF); 310 free(pdev, M_DEVBUF); 311 } 312 continue; 313 } 314 device_set_ivars(sc->sc_ports[i].dev, pdev); 315 device_set_desc(sc->sc_ports[i].dev, sc->sc_desc->name); 316 if (!bootverbose) 317 device_quiet(sc->sc_ports[i].dev); 318#ifdef PUC_DEBUG 319 printf("puc: type %d, bar %x, offset %x\n", 320 sc->sc_desc->ports[i].type, 321 sc->sc_desc->ports[i].bar, 322 sc->sc_desc->ports[i].offset); 323 print_resource_list(&pdev->resources); 324#endif 325 if (device_probe_and_attach(sc->sc_ports[i].dev) != 0) { 326 if (sc->barmuxed) { 327 bus_space_unmap(rman_get_bustag(rle->res), 328 rman_get_bushandle(rle->res), 329 8); 330 free(rle->res, M_DEVBUF); 331 free(pdev, M_DEVBUF); 332 } 333 } 334 } 335 336#ifdef PUC_DEBUG 337 bootverbose = 0; 338#endif 339 return (0); 340} 341 342/* 343 * This is just an brute force interrupt handler. It just calls all the 344 * registered handlers sequencially. 345 * 346 * Later on we should maybe have a different handler for boards that can 347 * tell us which device generated the interrupt. 348 */ 349static void 350puc_intr(void *arg) 351{ 352 int i; 353 struct puc_softc *sc; 354 355 sc = (struct puc_softc *)arg; 356 for (i = 0; i < PUC_MAX_PORTS; i++) 357 if (sc->sc_ports[i].ihand != NULL) 358 (sc->sc_ports[i].ihand)(sc->sc_ports[i].ihandarg); 359} 360 361static const struct puc_device_description * 362puc_find_description(uint32_t vend, uint32_t prod, uint32_t svend, 363 uint32_t sprod) 364{ 365 int i; 366 367#define checkreg(val, index) \ 368 (((val) & puc_devices[i].rmask[(index)]) == puc_devices[i].rval[(index)]) 369 370 for (i = 0; puc_devices[i].name != NULL; i++) { 371 if (checkreg(vend, PUC_REG_VEND) && 372 checkreg(prod, PUC_REG_PROD) && 373 checkreg(svend, PUC_REG_SVEND) && 374 checkreg(sprod, PUC_REG_SPROD)) 375 return (&puc_devices[i]); 376 } 377 378#undef checkreg 379 380 return (NULL); 381} 382 383/* 384 * It might be possible to make these more generic if we can detect patterns. 385 * For instance maybe if the size of a bar is 0x400 (the old isa space) it 386 * might contain one or more superio chips. 387 */ 388static void 389puc_config_superio(device_t dev) 390{ 391 struct puc_softc *sc = (struct puc_softc *)device_get_softc(dev); 392 393 if (sc->sc_desc->rval[PUC_REG_VEND] == 0x1592 && 394 sc->sc_desc->rval[PUC_REG_PROD] == 0x0781) 395 puc_config_win877(sc->sc_bar_mappings[0].res); 396} 397 398#define rdspio(indx) (bus_space_write_1(bst, bsh, efir, indx), \ 399 bus_space_read_1(bst, bsh, efdr)) 400#define wrspio(indx,data) (bus_space_write_1(bst, bsh, efir, indx), \ 401 bus_space_write_1(bst, bsh, efdr, data)) 402 403#ifdef PUC_DEBUG 404static void 405puc_print_win877(bus_space_tag_t bst, bus_space_handle_t bsh, u_int efir, 406 u_int efdr) 407{ 408 u_char cr00, cr01, cr04, cr09, cr0d, cr14, cr15, cr16, cr17; 409 u_char cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32; 410 411 cr00 = rdspio(0x00); 412 cr01 = rdspio(0x01); 413 cr04 = rdspio(0x04); 414 cr09 = rdspio(0x09); 415 cr0d = rdspio(0x0d); 416 cr14 = rdspio(0x14); 417 cr15 = rdspio(0x15); 418 cr16 = rdspio(0x16); 419 cr17 = rdspio(0x17); 420 cr18 = rdspio(0x18); 421 cr19 = rdspio(0x19); 422 cr24 = rdspio(0x24); 423 cr25 = rdspio(0x25); 424 cr28 = rdspio(0x28); 425 cr2c = rdspio(0x2c); 426 cr31 = rdspio(0x31); 427 cr32 = rdspio(0x32); 428 printf("877T: cr00 %x, cr01 %x, cr04 %x, cr09 %x, cr0d %x, cr14 %x, " 429 "cr15 %x, cr16 %x, cr17 %x, cr18 %x, cr19 %x, cr24 %x, cr25 %x, " 430 "cr28 %x, cr2c %x, cr31 %x, cr32 %x\n", cr00, cr01, cr04, cr09, 431 cr0d, cr14, cr15, cr16, cr17, 432 cr18, cr19, cr24, cr25, cr28, cr2c, cr31, cr32); 433} 434#endif 435 436static void 437puc_config_win877(struct resource *res) 438{ 439 u_char val; 440 u_int efir, efdr; 441 bus_space_tag_t bst; 442 bus_space_handle_t bsh; 443 444 bst = rman_get_bustag(res); 445 bsh = rman_get_bushandle(res); 446 447 /* configure the first W83877TF */ 448 bus_space_write_1(bst, bsh, 0x250, 0x89); 449 efir = 0x251; 450 efdr = 0x252; 451 val = rdspio(0x09) & 0x0f; 452 if (val != 0x0c) { 453 printf("conf_win877: Oops not a W83877TF\n"); 454 return; 455 } 456 457#ifdef PUC_DEBUG 458 printf("before: "); 459 puc_print_win877(bst, bsh, efir, efdr); 460#endif 461 462 val = rdspio(0x16); 463 val |= 0x04; 464 wrspio(0x16, val); 465 val &= ~0x04; 466 wrspio(0x16, val); 467 468 wrspio(0x24, 0x2e8 >> 2); 469 wrspio(0x25, 0x2f8 >> 2); 470 wrspio(0x17, 0x03); 471 wrspio(0x28, 0x43); 472 473#ifdef PUC_DEBUG 474 printf("after: "); 475 puc_print_win877(bst, bsh, efir, efdr); 476#endif 477 478 bus_space_write_1(bst, bsh, 0x250, 0xaa); 479 480 /* configure the second W83877TF */ 481 bus_space_write_1(bst, bsh, 0x3f0, 0x87); 482 bus_space_write_1(bst, bsh, 0x3f0, 0x87); 483 efir = 0x3f0; 484 efdr = 0x3f1; 485 val = rdspio(0x09) & 0x0f; 486 if (val != 0x0c) { 487 printf("conf_win877: Oops not a W83877TF\n"); 488 return; 489 } 490 491#ifdef PUC_DEBUG 492 printf("before: "); 493 puc_print_win877(bst, bsh, efir, efdr); 494#endif 495 496 val = rdspio(0x16); 497 val |= 0x04; 498 wrspio(0x16, val); 499 val &= ~0x04; 500 wrspio(0x16, val); 501 502 wrspio(0x24, 0x3e8 >> 2); 503 wrspio(0x25, 0x3f8 >> 2); 504 wrspio(0x17, 0x03); 505 wrspio(0x28, 0x43); 506 507#ifdef PUC_DEBUG 508 printf("after: "); 509 puc_print_win877(bst, bsh, efir, efdr); 510#endif 511 512 bus_space_write_1(bst, bsh, 0x3f0, 0xaa); 513} 514 515#undef rdspio 516#undef wrspio 517 518static int puc_find_free_unit(char *name) 519{ 520 devclass_t dc; 521 int start; 522 int unit; 523 524 unit = 0; 525 start = 0; 526 while (resource_int_value(name, unit, "port", &start) == 0 && 527 start > 0) 528 unit++; 529 dc = devclass_find(name); 530 if (dc == NULL) 531 return (-1); 532 while (devclass_get_device(dc, unit)) 533 unit++; 534#ifdef PUC_DEBUG 535 printf("puc: Using %s%d\n", name, unit); 536#endif 537 return (unit); 538} 539 540#ifdef PUC_DEBUG 541static void 542puc_print_resource_list(struct resource_list *rl) 543{ 544 struct resource_list_entry *rle; 545 546 printf("print_resource_list: rl %p\n", rl); 547 SLIST_FOREACH(rle, rl, link) 548 printf("type %x, rid %x\n", rle->type, rle->rid); 549 printf("print_resource_list: end.\n"); 550} 551#endif 552 553static struct resource * 554puc_alloc_resource(device_t dev, device_t child, int type, int *rid, 555 u_long start, u_long end, u_long count, u_int flags) 556{ 557 struct puc_device *pdev; 558 struct resource *retval; 559 struct resource_list *rl; 560 struct resource_list_entry *rle; 561 562 pdev = device_get_ivars(child); 563 rl = &pdev->resources; 564 565#ifdef PUC_DEBUG 566 printf("puc_alloc_resource: pdev %p, looking for t %x, r %x\n", 567 pdev, type, *rid); 568 puc_print_resource_list(rl); 569#endif 570 retval = NULL; 571 rle = resource_list_find(rl, type, *rid); 572 if (rle) { 573 start = rle->start; 574 end = rle->end; 575 count = rle->count; 576#ifdef PUC_DEBUG 577 printf("found rle, %lx, %lx, %lx\n", start, end, count); 578#endif 579 retval = rle->res; 580 } else 581 printf("oops rle is gone\n"); 582 583 return (retval); 584} 585 586static int 587puc_release_resource(device_t dev, device_t child, int type, int rid, 588 struct resource *res) 589{ 590 return (0); 591} 592 593static int 594puc_get_resource(device_t dev, device_t child, int type, int rid, 595 u_long *startp, u_long *countp) 596{ 597 struct puc_device *pdev; 598 struct resource_list *rl; 599 struct resource_list_entry *rle; 600 601 pdev = device_get_ivars(child); 602 rl = &pdev->resources; 603 604#ifdef PUC_DEBUG 605 printf("puc_get_resource: pdev %p, looking for t %x, r %x\n", pdev, 606 type, rid); 607 puc_print_resource_list(rl); 608#endif 609 rle = resource_list_find(rl, type, rid); 610 if (rle) { 611#ifdef PUC_DEBUG 612 printf("found rle %p,", rle); 613#endif 614 if (startp != NULL) 615 *startp = rle->start; 616 if (countp != NULL) 617 *countp = rle->count; 618#ifdef PUC_DEBUG 619 printf(" %lx, %lx\n", rle->start, rle->count); 620#endif 621 return (0); 622 } else 623 printf("oops rle is gone\n"); 624 return (ENXIO); 625} 626 627static int 628puc_setup_intr(device_t dev, device_t child, struct resource *r, int flags, 629 void (*ihand)(void *), void *arg, void **cookiep) 630{ 631 int i; 632 struct puc_softc *sc; 633 634 sc = (struct puc_softc *)device_get_softc(dev); 635 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 636 if (sc->sc_ports[i].dev == child) { 637 if (sc->sc_ports[i].ihand != 0) 638 return (ENXIO); 639 sc->sc_ports[i].ihand = ihand; 640 sc->sc_ports[i].ihandarg = arg; 641 *cookiep = arg; 642 return (0); 643 } 644 } 645 return (ENXIO); 646} 647 648static int 649puc_teardown_intr(device_t dev, device_t child, struct resource *r, 650 void *cookie) 651{ 652 int i; 653 struct puc_softc *sc; 654 655 sc = (struct puc_softc *)device_get_softc(dev); 656 for (i = 0; PUC_PORT_VALID(sc->sc_desc, i); i++) { 657 if (sc->sc_ports[i].dev == child) { 658 sc->sc_ports[i].ihand = NULL; 659 sc->sc_ports[i].ihandarg = NULL; 660 return (0); 661 } 662 } 663 return (ENXIO); 664} 665 666static int 667puc_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 668{ 669 struct puc_device *pdev; 670 671 pdev = device_get_ivars(child); 672 if (pdev == NULL) 673 return (ENOENT); 674 675 switch(index) { 676 case PUC_IVAR_FREQ: 677 *result = pdev->serialfreq; 678 break; 679 default: 680 return (ENOENT); 681 } 682 return (0); 683} 684 685static device_method_t puc_pci_methods[] = { 686 /* Device interface */ 687 DEVMETHOD(device_probe, puc_pci_probe), 688 DEVMETHOD(device_attach, puc_pci_attach), 689 690 DEVMETHOD(bus_alloc_resource, puc_alloc_resource), 691 DEVMETHOD(bus_release_resource, puc_release_resource), 692 DEVMETHOD(bus_get_resource, puc_get_resource), 693 DEVMETHOD(bus_read_ivar, puc_read_ivar), 694 DEVMETHOD(bus_setup_intr, puc_setup_intr), 695 DEVMETHOD(bus_teardown_intr, puc_teardown_intr), 696 DEVMETHOD(bus_print_child, bus_generic_print_child), 697 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 698 { 0, 0 } 699}; 700 701static driver_t puc_pci_driver = { 702 "puc", 703 puc_pci_methods, 704 sizeof(struct puc_softc), 705}; 706 707static devclass_t puc_devclass; 708 709DRIVER_MODULE(puc, pci, puc_pci_driver, puc_devclass, 0, 0); 710DRIVER_MODULE(puc, cardbus, puc_pci_driver, puc_devclass, 0, 0); 711