puc.c revision 223091
1/*- 2 * Copyright (c) 2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/puc/puc.c 223091 2011-06-14 18:19:48Z jhb $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/bus.h> 34#include <sys/conf.h> 35#include <sys/malloc.h> 36#include <sys/mutex.h> 37 38#include <machine/bus.h> 39#include <machine/resource.h> 40#include <sys/rman.h> 41 42#include <dev/pci/pcireg.h> 43#include <dev/pci/pcivar.h> 44 45#include <dev/puc/puc_bus.h> 46#include <dev/puc/puc_cfg.h> 47#include <dev/puc/puc_bfe.h> 48 49#define PUC_ISRCCNT 5 50 51struct puc_port { 52 struct puc_bar *p_bar; 53 struct resource *p_rres; 54 struct resource *p_ires; 55 device_t p_dev; 56 int p_nr; 57 int p_type; 58 int p_rclk; 59 60 int p_hasintr:1; 61 62 serdev_intr_t *p_ihsrc[PUC_ISRCCNT]; 63 void *p_iharg; 64 65 int p_ipend; 66}; 67 68devclass_t puc_devclass; 69const char puc_driver_name[] = "puc"; 70 71MALLOC_DEFINE(M_PUC, "PUC", "PUC driver"); 72 73struct puc_bar * 74puc_get_bar(struct puc_softc *sc, int rid) 75{ 76 struct puc_bar *bar; 77 struct rman *rm; 78 u_long end, start; 79 int error, i; 80 81 /* Find the BAR entry with the given RID. */ 82 i = 0; 83 while (i < PUC_PCI_BARS && sc->sc_bar[i].b_rid != rid) 84 i++; 85 if (i < PUC_PCI_BARS) 86 return (&sc->sc_bar[i]); 87 88 /* Not found. If we're looking for an unused entry, return NULL. */ 89 if (rid == -1) 90 return (NULL); 91 92 /* Get an unused entry for us to fill. */ 93 bar = puc_get_bar(sc, -1); 94 if (bar == NULL) 95 return (NULL); 96 bar->b_rid = rid; 97 bar->b_type = SYS_RES_IOPORT; 98 bar->b_res = bus_alloc_resource_any(sc->sc_dev, bar->b_type, 99 &bar->b_rid, RF_ACTIVE); 100 if (bar->b_res == NULL) { 101 bar->b_rid = rid; 102 bar->b_type = SYS_RES_MEMORY; 103 bar->b_res = bus_alloc_resource_any(sc->sc_dev, bar->b_type, 104 &bar->b_rid, RF_ACTIVE); 105 if (bar->b_res == NULL) { 106 bar->b_rid = -1; 107 return (NULL); 108 } 109 } 110 111 /* Update our managed space. */ 112 rm = (bar->b_type == SYS_RES_IOPORT) ? &sc->sc_ioport : &sc->sc_iomem; 113 start = rman_get_start(bar->b_res); 114 end = rman_get_end(bar->b_res); 115 error = rman_manage_region(rm, start, end); 116 if (error) { 117 bus_release_resource(sc->sc_dev, bar->b_type, bar->b_rid, 118 bar->b_res); 119 bar->b_res = NULL; 120 bar->b_rid = -1; 121 bar = NULL; 122 } 123 124 return (bar); 125} 126 127static int 128puc_intr(void *arg) 129{ 130 struct puc_port *port; 131 struct puc_softc *sc = arg; 132 u_long ds, dev, devs; 133 int i, idx, ipend, isrc, nints; 134 uint8_t ilr; 135 136 nints = 0; 137 while (1) { 138 /* 139 * Obtain the set of devices with pending interrupts. 140 */ 141 devs = sc->sc_serdevs; 142 if (sc->sc_ilr == PUC_ILR_DIGI) { 143 idx = 0; 144 while (devs & (0xfful << idx)) { 145 ilr = ~bus_read_1(sc->sc_port[idx].p_rres, 7); 146 devs &= ~0ul ^ ((u_long)ilr << idx); 147 idx += 8; 148 } 149 } else if (sc->sc_ilr == PUC_ILR_QUATECH) { 150 /* 151 * Don't trust the value if it's the same as the option 152 * register. It may mean that the ILR is not active and 153 * we're reading the option register instead. This may 154 * lead to false positives on 8-port boards. 155 */ 156 ilr = bus_read_1(sc->sc_port[0].p_rres, 7); 157 if (ilr != (sc->sc_cfg_data & 0xff)) 158 devs &= (u_long)ilr; 159 } 160 if (devs == 0UL) 161 break; 162 163 /* 164 * Obtain the set of interrupt sources from those devices 165 * that have pending interrupts. 166 */ 167 ipend = 0; 168 idx = 0, dev = 1UL; 169 ds = devs; 170 while (ds != 0UL) { 171 while ((ds & dev) == 0UL) 172 idx++, dev <<= 1; 173 ds &= ~dev; 174 port = &sc->sc_port[idx]; 175 port->p_ipend = SERDEV_IPEND(port->p_dev); 176 ipend |= port->p_ipend; 177 } 178 if (ipend == 0) 179 break; 180 181 i = 0, isrc = SER_INT_OVERRUN; 182 while (ipend) { 183 while (i < PUC_ISRCCNT && !(ipend & isrc)) 184 i++, isrc <<= 1; 185 KASSERT(i < PUC_ISRCCNT, ("%s", __func__)); 186 ipend &= ~isrc; 187 idx = 0, dev = 1UL; 188 ds = devs; 189 while (ds != 0UL) { 190 while ((ds & dev) == 0UL) 191 idx++, dev <<= 1; 192 ds &= ~dev; 193 port = &sc->sc_port[idx]; 194 if (!(port->p_ipend & isrc)) 195 continue; 196 if (port->p_ihsrc[i] != NULL) 197 (*port->p_ihsrc[i])(port->p_iharg); 198 nints++; 199 } 200 } 201 } 202 203 return ((nints > 0) ? FILTER_HANDLED : FILTER_STRAY); 204} 205 206int 207puc_bfe_attach(device_t dev) 208{ 209 char buffer[64]; 210 struct puc_bar *bar; 211 struct puc_port *port; 212 struct puc_softc *sc; 213 struct rman *rm; 214 intptr_t res; 215 bus_addr_t ofs, start; 216 bus_size_t size; 217 bus_space_handle_t bsh; 218 bus_space_tag_t bst; 219 int error, idx; 220 221 sc = device_get_softc(dev); 222 223 for (idx = 0; idx < PUC_PCI_BARS; idx++) 224 sc->sc_bar[idx].b_rid = -1; 225 226 do { 227 sc->sc_ioport.rm_type = RMAN_ARRAY; 228 error = rman_init(&sc->sc_ioport); 229 if (!error) { 230 sc->sc_iomem.rm_type = RMAN_ARRAY; 231 error = rman_init(&sc->sc_iomem); 232 if (!error) { 233 sc->sc_irq.rm_type = RMAN_ARRAY; 234 error = rman_init(&sc->sc_irq); 235 if (!error) 236 break; 237 rman_fini(&sc->sc_iomem); 238 } 239 rman_fini(&sc->sc_ioport); 240 } 241 return (error); 242 } while (0); 243 244 snprintf(buffer, sizeof(buffer), "%s I/O port mapping", 245 device_get_nameunit(dev)); 246 sc->sc_ioport.rm_descr = strdup(buffer, M_PUC); 247 snprintf(buffer, sizeof(buffer), "%s I/O memory mapping", 248 device_get_nameunit(dev)); 249 sc->sc_iomem.rm_descr = strdup(buffer, M_PUC); 250 snprintf(buffer, sizeof(buffer), "%s port numbers", 251 device_get_nameunit(dev)); 252 sc->sc_irq.rm_descr = strdup(buffer, M_PUC); 253 254 error = puc_config(sc, PUC_CFG_GET_NPORTS, 0, &res); 255 KASSERT(error == 0, ("%s %d", __func__, __LINE__)); 256 sc->sc_nports = (int)res; 257 sc->sc_port = malloc(sc->sc_nports * sizeof(struct puc_port), 258 M_PUC, M_WAITOK|M_ZERO); 259 260 error = rman_manage_region(&sc->sc_irq, 1, sc->sc_nports); 261 if (error) 262 goto fail; 263 264 error = puc_config(sc, PUC_CFG_SETUP, 0, &res); 265 if (error) 266 goto fail; 267 268 for (idx = 0; idx < sc->sc_nports; idx++) { 269 port = &sc->sc_port[idx]; 270 port->p_nr = idx + 1; 271 error = puc_config(sc, PUC_CFG_GET_TYPE, idx, &res); 272 if (error) 273 goto fail; 274 port->p_type = res; 275 error = puc_config(sc, PUC_CFG_GET_RID, idx, &res); 276 if (error) 277 goto fail; 278 bar = puc_get_bar(sc, res); 279 if (bar == NULL) { 280 error = ENXIO; 281 goto fail; 282 } 283 port->p_bar = bar; 284 start = rman_get_start(bar->b_res); 285 error = puc_config(sc, PUC_CFG_GET_OFS, idx, &res); 286 if (error) 287 goto fail; 288 ofs = res; 289 error = puc_config(sc, PUC_CFG_GET_LEN, idx, &res); 290 if (error) 291 goto fail; 292 size = res; 293 rm = (bar->b_type == SYS_RES_IOPORT) 294 ? &sc->sc_ioport: &sc->sc_iomem; 295 port->p_rres = rman_reserve_resource(rm, start + ofs, 296 start + ofs + size - 1, size, 0, NULL); 297 if (port->p_rres != NULL) { 298 bsh = rman_get_bushandle(bar->b_res); 299 bst = rman_get_bustag(bar->b_res); 300 bus_space_subregion(bst, bsh, ofs, size, &bsh); 301 rman_set_bushandle(port->p_rres, bsh); 302 rman_set_bustag(port->p_rres, bst); 303 } 304 port->p_ires = rman_reserve_resource(&sc->sc_irq, port->p_nr, 305 port->p_nr, 1, 0, NULL); 306 if (port->p_ires == NULL) { 307 error = ENXIO; 308 goto fail; 309 } 310 error = puc_config(sc, PUC_CFG_GET_CLOCK, idx, &res); 311 if (error) 312 goto fail; 313 port->p_rclk = res; 314 315 port->p_dev = device_add_child(dev, NULL, -1); 316 if (port->p_dev != NULL) 317 device_set_ivars(port->p_dev, (void *)port); 318 } 319 320 error = puc_config(sc, PUC_CFG_GET_ILR, 0, &res); 321 if (error) 322 goto fail; 323 sc->sc_ilr = res; 324 if (bootverbose && sc->sc_ilr != 0) 325 device_printf(dev, "using interrupt latch register\n"); 326 327 sc->sc_irid = 0; 328 sc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irid, 329 RF_ACTIVE|RF_SHAREABLE); 330 if (sc->sc_ires != NULL) { 331 error = bus_setup_intr(dev, sc->sc_ires, 332 INTR_TYPE_TTY, puc_intr, NULL, sc, &sc->sc_icookie); 333 if (error) 334 error = bus_setup_intr(dev, sc->sc_ires, 335 INTR_TYPE_TTY | INTR_MPSAFE, NULL, 336 (driver_intr_t *)puc_intr, sc, &sc->sc_icookie); 337 else 338 sc->sc_fastintr = 1; 339 340 if (error) { 341 device_printf(dev, "could not activate interrupt\n"); 342 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irid, 343 sc->sc_ires); 344 sc->sc_ires = NULL; 345 } 346 } 347 if (sc->sc_ires == NULL) { 348 /* XXX no interrupt resource. Force polled mode. */ 349 sc->sc_polled = 1; 350 } 351 352 /* Probe and attach our children. */ 353 for (idx = 0; idx < sc->sc_nports; idx++) { 354 port = &sc->sc_port[idx]; 355 if (port->p_dev == NULL) 356 continue; 357 error = device_probe_and_attach(port->p_dev); 358 if (error) { 359 device_delete_child(dev, port->p_dev); 360 port->p_dev = NULL; 361 } 362 } 363 364 /* 365 * If there are no serdev devices, then our interrupt handler 366 * will do nothing. Tear it down. 367 */ 368 if (sc->sc_serdevs == 0UL) 369 bus_teardown_intr(dev, sc->sc_ires, sc->sc_icookie); 370 371 return (0); 372 373fail: 374 for (idx = 0; idx < sc->sc_nports; idx++) { 375 port = &sc->sc_port[idx]; 376 if (port->p_dev != NULL) 377 device_delete_child(dev, port->p_dev); 378 if (port->p_rres != NULL) 379 rman_release_resource(port->p_rres); 380 if (port->p_ires != NULL) 381 rman_release_resource(port->p_ires); 382 } 383 for (idx = 0; idx < PUC_PCI_BARS; idx++) { 384 bar = &sc->sc_bar[idx]; 385 if (bar->b_res != NULL) 386 bus_release_resource(sc->sc_dev, bar->b_type, 387 bar->b_rid, bar->b_res); 388 } 389 rman_fini(&sc->sc_irq); 390 free(__DECONST(void *, sc->sc_irq.rm_descr), M_PUC); 391 rman_fini(&sc->sc_iomem); 392 free(__DECONST(void *, sc->sc_iomem.rm_descr), M_PUC); 393 rman_fini(&sc->sc_ioport); 394 free(__DECONST(void *, sc->sc_ioport.rm_descr), M_PUC); 395 free(sc->sc_port, M_PUC); 396 return (error); 397} 398 399int 400puc_bfe_detach(device_t dev) 401{ 402 struct puc_bar *bar; 403 struct puc_port *port; 404 struct puc_softc *sc; 405 int error, idx; 406 407 sc = device_get_softc(dev); 408 409 /* Detach our children. */ 410 error = 0; 411 for (idx = 0; idx < sc->sc_nports; idx++) { 412 port = &sc->sc_port[idx]; 413 if (port->p_dev == NULL) 414 continue; 415 if (device_detach(port->p_dev) == 0) { 416 device_delete_child(dev, port->p_dev); 417 if (port->p_rres != NULL) 418 rman_release_resource(port->p_rres); 419 if (port->p_ires != NULL) 420 rman_release_resource(port->p_ires); 421 } else 422 error = ENXIO; 423 } 424 if (error) 425 return (error); 426 427 if (sc->sc_serdevs != 0UL) 428 bus_teardown_intr(dev, sc->sc_ires, sc->sc_icookie); 429 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irid, sc->sc_ires); 430 431 for (idx = 0; idx < PUC_PCI_BARS; idx++) { 432 bar = &sc->sc_bar[idx]; 433 if (bar->b_res != NULL) 434 bus_release_resource(sc->sc_dev, bar->b_type, 435 bar->b_rid, bar->b_res); 436 } 437 438 rman_fini(&sc->sc_irq); 439 free(__DECONST(void *, sc->sc_irq.rm_descr), M_PUC); 440 rman_fini(&sc->sc_iomem); 441 free(__DECONST(void *, sc->sc_iomem.rm_descr), M_PUC); 442 rman_fini(&sc->sc_ioport); 443 free(__DECONST(void *, sc->sc_ioport.rm_descr), M_PUC); 444 free(sc->sc_port, M_PUC); 445 return (0); 446} 447 448int 449puc_bfe_probe(device_t dev, const struct puc_cfg *cfg) 450{ 451 struct puc_softc *sc; 452 intptr_t res; 453 int error; 454 455 sc = device_get_softc(dev); 456 sc->sc_dev = dev; 457 sc->sc_cfg = cfg; 458 459 /* We don't attach to single-port serial cards. */ 460 if (cfg->ports == PUC_PORT_1S || cfg->ports == PUC_PORT_1P) 461 return (EDOOFUS); 462 error = puc_config(sc, PUC_CFG_GET_NPORTS, 0, &res); 463 if (error) 464 return (error); 465 error = puc_config(sc, PUC_CFG_GET_DESC, 0, &res); 466 if (error) 467 return (error); 468 if (res != 0) 469 device_set_desc(dev, (const char *)res); 470 return (BUS_PROBE_DEFAULT); 471} 472 473struct resource * 474puc_bus_alloc_resource(device_t dev, device_t child, int type, int *rid, 475 u_long start, u_long end, u_long count, u_int flags) 476{ 477 struct puc_port *port; 478 struct resource *res; 479 device_t assigned, originator; 480 int error; 481 482 /* Get our immediate child. */ 483 originator = child; 484 while (child != NULL && device_get_parent(child) != dev) 485 child = device_get_parent(child); 486 if (child == NULL) 487 return (NULL); 488 489 port = device_get_ivars(child); 490 KASSERT(port != NULL, ("%s %d", __func__, __LINE__)); 491 492 if (rid == NULL || *rid != 0) 493 return (NULL); 494 495 /* We only support default allocations. */ 496 if (start != 0UL || end != ~0UL) 497 return (NULL); 498 499 if (type == port->p_bar->b_type) 500 res = port->p_rres; 501 else if (type == SYS_RES_IRQ) 502 res = port->p_ires; 503 else 504 return (NULL); 505 506 if (res == NULL) 507 return (NULL); 508 509 assigned = rman_get_device(res); 510 if (assigned == NULL) /* Not allocated */ 511 rman_set_device(res, originator); 512 else if (assigned != originator) 513 return (NULL); 514 515 if (flags & RF_ACTIVE) { 516 error = rman_activate_resource(res); 517 if (error) { 518 if (assigned == NULL) 519 rman_set_device(res, NULL); 520 return (NULL); 521 } 522 } 523 524 return (res); 525} 526 527int 528puc_bus_release_resource(device_t dev, device_t child, int type, int rid, 529 struct resource *res) 530{ 531 struct puc_port *port; 532 device_t originator; 533 534 /* Get our immediate child. */ 535 originator = child; 536 while (child != NULL && device_get_parent(child) != dev) 537 child = device_get_parent(child); 538 if (child == NULL) 539 return (EINVAL); 540 541 port = device_get_ivars(child); 542 KASSERT(port != NULL, ("%s %d", __func__, __LINE__)); 543 544 if (rid != 0 || res == NULL) 545 return (EINVAL); 546 547 if (type == port->p_bar->b_type) { 548 if (res != port->p_rres) 549 return (EINVAL); 550 } else if (type == SYS_RES_IRQ) { 551 if (res != port->p_ires) 552 return (EINVAL); 553 if (port->p_hasintr) 554 return (EBUSY); 555 } else 556 return (EINVAL); 557 558 if (rman_get_device(res) != originator) 559 return (ENXIO); 560 if (rman_get_flags(res) & RF_ACTIVE) 561 rman_deactivate_resource(res); 562 rman_set_device(res, NULL); 563 return (0); 564} 565 566int 567puc_bus_get_resource(device_t dev, device_t child, int type, int rid, 568 u_long *startp, u_long *countp) 569{ 570 struct puc_port *port; 571 struct resource *res; 572 u_long start; 573 574 /* Get our immediate child. */ 575 while (child != NULL && device_get_parent(child) != dev) 576 child = device_get_parent(child); 577 if (child == NULL) 578 return (EINVAL); 579 580 port = device_get_ivars(child); 581 KASSERT(port != NULL, ("%s %d", __func__, __LINE__)); 582 583 if (type == port->p_bar->b_type) 584 res = port->p_rres; 585 else if (type == SYS_RES_IRQ) 586 res = port->p_ires; 587 else 588 return (ENXIO); 589 590 if (rid != 0 || res == NULL) 591 return (ENXIO); 592 593 start = rman_get_start(res); 594 if (startp != NULL) 595 *startp = start; 596 if (countp != NULL) 597 *countp = rman_get_end(res) - start + 1; 598 return (0); 599} 600 601int 602puc_bus_setup_intr(device_t dev, device_t child, struct resource *res, 603 int flags, driver_filter_t *filt, void (*ihand)(void *), void *arg, void **cookiep) 604{ 605 struct puc_port *port; 606 struct puc_softc *sc; 607 device_t originator; 608 int i, isrc, serdev; 609 610 sc = device_get_softc(dev); 611 612 /* Get our immediate child. */ 613 originator = child; 614 while (child != NULL && device_get_parent(child) != dev) 615 child = device_get_parent(child); 616 if (child == NULL) 617 return (EINVAL); 618 619 port = device_get_ivars(child); 620 KASSERT(port != NULL, ("%s %d", __func__, __LINE__)); 621 622 if (cookiep == NULL || res != port->p_ires) 623 return (EINVAL); 624 /* We demand that serdev devices use filter_only interrupts. */ 625 if (ihand != NULL) 626 return (ENXIO); 627 if (rman_get_device(port->p_ires) != originator) 628 return (ENXIO); 629 630 /* 631 * Have non-serdev ports handled by the bus implementation. It 632 * supports multiple handlers for a single interrupt as it is, 633 * so we wouldn't add value if we did it ourselves. 634 */ 635 serdev = 0; 636 if (port->p_type == PUC_TYPE_SERIAL) { 637 i = 0, isrc = SER_INT_OVERRUN; 638 while (i < PUC_ISRCCNT) { 639 port->p_ihsrc[i] = SERDEV_IHAND(originator, isrc); 640 if (port->p_ihsrc[i] != NULL) 641 serdev = 1; 642 i++, isrc <<= 1; 643 } 644 } 645 if (!serdev) 646 return (BUS_SETUP_INTR(device_get_parent(dev), originator, 647 sc->sc_ires, flags, filt, ihand, arg, cookiep)); 648 649 sc->sc_serdevs |= 1UL << (port->p_nr - 1); 650 651 port->p_hasintr = 1; 652 port->p_iharg = arg; 653 654 *cookiep = port; 655 return (0); 656} 657 658int 659puc_bus_teardown_intr(device_t dev, device_t child, struct resource *res, 660 void *cookie) 661{ 662 struct puc_port *port; 663 struct puc_softc *sc; 664 device_t originator; 665 int i; 666 667 sc = device_get_softc(dev); 668 669 /* Get our immediate child. */ 670 originator = child; 671 while (child != NULL && device_get_parent(child) != dev) 672 child = device_get_parent(child); 673 if (child == NULL) 674 return (EINVAL); 675 676 port = device_get_ivars(child); 677 KASSERT(port != NULL, ("%s %d", __func__, __LINE__)); 678 679 if (res != port->p_ires) 680 return (EINVAL); 681 if (rman_get_device(port->p_ires) != originator) 682 return (ENXIO); 683 684 if (!port->p_hasintr) 685 return (BUS_TEARDOWN_INTR(device_get_parent(dev), originator, 686 sc->sc_ires, cookie)); 687 688 if (cookie != port) 689 return (EINVAL); 690 691 port->p_hasintr = 0; 692 port->p_iharg = NULL; 693 694 for (i = 0; i < PUC_ISRCCNT; i++) 695 port->p_ihsrc[i] = NULL; 696 697 return (0); 698} 699 700int 701puc_bus_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) 702{ 703 struct puc_port *port; 704 705 /* Get our immediate child. */ 706 while (child != NULL && device_get_parent(child) != dev) 707 child = device_get_parent(child); 708 if (child == NULL) 709 return (EINVAL); 710 711 port = device_get_ivars(child); 712 KASSERT(port != NULL, ("%s %d", __func__, __LINE__)); 713 714 if (result == NULL) 715 return (EINVAL); 716 717 switch(index) { 718 case PUC_IVAR_CLOCK: 719 *result = port->p_rclk; 720 break; 721 case PUC_IVAR_TYPE: 722 *result = port->p_type; 723 break; 724 default: 725 return (ENOENT); 726 } 727 return (0); 728} 729 730int 731puc_bus_print_child(device_t dev, device_t child) 732{ 733 struct puc_port *port; 734 int retval; 735 736 port = device_get_ivars(child); 737 retval = 0; 738 739 retval += bus_print_child_header(dev, child); 740 retval += printf(" at port %d", port->p_nr); 741 retval += bus_print_child_footer(dev, child); 742 743 return (retval); 744} 745 746int 747puc_bus_child_location_str(device_t dev, device_t child, char *buf, 748 size_t buflen) 749{ 750 struct puc_port *port; 751 752 port = device_get_ivars(child); 753 snprintf(buf, buflen, "port=%d", port->p_nr); 754 return (0); 755} 756 757int 758puc_bus_child_pnpinfo_str(device_t dev, device_t child, char *buf, 759 size_t buflen) 760{ 761 struct puc_port *port; 762 763 port = device_get_ivars(child); 764 snprintf(buf, buflen, "type=%d", port->p_type); 765 return (0); 766} 767