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