1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000-2001 Jonathan Chen All rights reserved. 5 * Copyright (c) 2002-2004 M. Warner Losh <imp@FreeBSD.org> 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, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 /*- 31 * Copyright (c) 1998, 1999 and 2000 32 * HAYAKAWA Koichi. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by HAYAKAWA Koichi. 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 /* 61 * Driver for PCI to CardBus Bridge chips 62 * 63 * References: 64 * TI Datasheets: 65 * http://www-s.ti.com/cgi-bin/sc/generic2.cgi?family=PCI+CARDBUS+CONTROLLERS 66 * 67 * Written by Jonathan Chen <jon@freebsd.org> 68 * The author would like to acknowledge: 69 * * HAYAKAWA Koichi: Author of the NetBSD code for the same thing 70 * * Warner Losh: Newbus/newcard guru and author of the pccard side of things 71 * * YAMAMOTO Shigeru: Author of another FreeBSD cardbus driver 72 * * David Cross: Author of the initial ugly hack for a specific cardbus card 73 */ 74 75 #include <sys/cdefs.h> 76 __FBSDID("$FreeBSD$"); 77 78 #include <sys/param.h> 79 #include <sys/bus.h> 80 #include <sys/condvar.h> 81 #include <sys/errno.h> 82 #include <sys/kernel.h> 83 #include <sys/module.h> 84 #include <sys/kthread.h> 85 #include <sys/lock.h> 86 #include <sys/malloc.h> 87 #include <sys/mutex.h> 88 #include <sys/proc.h> 89 #include <sys/rman.h> 90 #include <sys/sysctl.h> 91 #include <sys/systm.h> 92 #include <machine/bus.h> 93 #include <machine/resource.h> 94 95 #include <dev/pci/pcireg.h> 96 #include <dev/pci/pcivar.h> 97 #include <dev/pci/pcib_private.h> 98 99 #include <dev/pccard/pccardreg.h> 100 #include <dev/pccard/pccardvar.h> 101 102 #include <dev/exca/excareg.h> 103 #include <dev/exca/excavar.h> 104 105 #include <dev/pccbb/pccbbreg.h> 106 #include <dev/pccbb/pccbbvar.h> 107 108 #include "power_if.h" 109 #include "card_if.h" 110 #include "pcib_if.h" 111 112 #define DPRINTF(x) do { if (cbb_debug) printf x; } while (0) 113 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0) 114 115 #define PCI_MASK_CONFIG(DEV,REG,MASK,SIZE) \ 116 pci_write_config(DEV, REG, pci_read_config(DEV, REG, SIZE) MASK, SIZE) 117 #define PCI_MASK2_CONFIG(DEV,REG,MASK1,MASK2,SIZE) \ 118 pci_write_config(DEV, REG, ( \ 119 pci_read_config(DEV, REG, SIZE) MASK1) MASK2, SIZE) 120 121 #define CBB_CARD_PRESENT(s) ((s & CBB_STATE_CD) == 0) 122 123 #define CBB_START_MEM 0x88000000 124 #define CBB_START_32_IO 0x1000 125 #define CBB_START_16_IO 0x100 126 127 devclass_t cbb_devclass; 128 129 /* sysctl vars */ 130 static SYSCTL_NODE(_hw, OID_AUTO, cbb, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 131 "CBB parameters"); 132 133 /* There's no way to say TUNEABLE_LONG to get the right types */ 134 u_long cbb_start_mem = CBB_START_MEM; 135 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_memory, CTLFLAG_RWTUN, 136 &cbb_start_mem, CBB_START_MEM, 137 "Starting address for memory allocations"); 138 139 u_long cbb_start_16_io = CBB_START_16_IO; 140 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_16_io, CTLFLAG_RWTUN, 141 &cbb_start_16_io, CBB_START_16_IO, 142 "Starting ioport for 16-bit cards"); 143 144 u_long cbb_start_32_io = CBB_START_32_IO; 145 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_32_io, CTLFLAG_RWTUN, 146 &cbb_start_32_io, CBB_START_32_IO, 147 "Starting ioport for 32-bit cards"); 148 149 int cbb_debug = 0; 150 SYSCTL_INT(_hw_cbb, OID_AUTO, debug, CTLFLAG_RWTUN, &cbb_debug, 0, 151 "Verbose cardbus bridge debugging"); 152 153 static void cbb_insert(struct cbb_softc *sc); 154 static void cbb_removal(struct cbb_softc *sc); 155 static uint32_t cbb_detect_voltage(device_t brdev); 156 static int cbb_cardbus_reset_power(device_t brdev, device_t child, int on); 157 static int cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, 158 uint32_t end); 159 static int cbb_cardbus_mem_open(device_t brdev, int win, 160 uint32_t start, uint32_t end); 161 static void cbb_cardbus_auto_open(struct cbb_softc *sc, int type); 162 static int cbb_cardbus_activate_resource(device_t brdev, device_t child, 163 int type, int rid, struct resource *res); 164 static int cbb_cardbus_deactivate_resource(device_t brdev, 165 device_t child, int type, int rid, struct resource *res); 166 static struct resource *cbb_cardbus_alloc_resource(device_t brdev, 167 device_t child, int type, int *rid, rman_res_t start, 168 rman_res_t end, rman_res_t count, u_int flags); 169 static int cbb_cardbus_release_resource(device_t brdev, device_t child, 170 int type, int rid, struct resource *res); 171 static int cbb_cardbus_power_enable_socket(device_t brdev, 172 device_t child); 173 static int cbb_cardbus_power_disable_socket(device_t brdev, 174 device_t child); 175 static int cbb_func_filt(void *arg); 176 static void cbb_func_intr(void *arg); 177 178 static void 179 cbb_remove_res(struct cbb_softc *sc, struct resource *res) 180 { 181 struct cbb_reslist *rle; 182 183 SLIST_FOREACH(rle, &sc->rl, link) { 184 if (rle->res == res) { 185 SLIST_REMOVE(&sc->rl, rle, cbb_reslist, link); 186 free(rle, M_DEVBUF); 187 return; 188 } 189 } 190 } 191 192 static struct resource * 193 cbb_find_res(struct cbb_softc *sc, int type, int rid) 194 { 195 struct cbb_reslist *rle; 196 197 SLIST_FOREACH(rle, &sc->rl, link) 198 if (SYS_RES_MEMORY == rle->type && rid == rle->rid) 199 return (rle->res); 200 return (NULL); 201 } 202 203 static void 204 cbb_insert_res(struct cbb_softc *sc, struct resource *res, int type, 205 int rid) 206 { 207 struct cbb_reslist *rle; 208 209 /* 210 * Need to record allocated resource so we can iterate through 211 * it later. 212 */ 213 rle = malloc(sizeof(struct cbb_reslist), M_DEVBUF, M_NOWAIT); 214 if (rle == NULL) 215 panic("cbb_cardbus_alloc_resource: can't record entry!"); 216 rle->res = res; 217 rle->type = type; 218 rle->rid = rid; 219 SLIST_INSERT_HEAD(&sc->rl, rle, link); 220 } 221 222 static void 223 cbb_destroy_res(struct cbb_softc *sc) 224 { 225 struct cbb_reslist *rle; 226 227 while ((rle = SLIST_FIRST(&sc->rl)) != NULL) { 228 device_printf(sc->dev, "Danger Will Robinson: Resource " 229 "left allocated! This is a bug... " 230 "(rid=%x, type=%d, addr=%jx)\n", rle->rid, rle->type, 231 rman_get_start(rle->res)); 232 SLIST_REMOVE_HEAD(&sc->rl, link); 233 free(rle, M_DEVBUF); 234 } 235 } 236 237 /* 238 * Disable function interrupts by telling the bridge to generate IRQ1 239 * interrupts. These interrupts aren't really generated by the chip, since 240 * IRQ1 is reserved. Some chipsets assert INTA# inappropriately during 241 * initialization, so this helps to work around the problem. 242 * 243 * XXX We can't do this workaround for all chipsets, because this 244 * XXX causes interference with the keyboard because somechipsets will 245 * XXX actually signal IRQ1 over their serial interrupt connections to 246 * XXX the south bridge. Disable it it for now. 247 */ 248 void 249 cbb_disable_func_intr(struct cbb_softc *sc) 250 { 251 #if 0 252 uint8_t reg; 253 254 reg = (exca_getb(&sc->exca, EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) | 255 EXCA_INTR_IRQ_RESERVED1; 256 exca_putb(&sc->exca, EXCA_INTR, reg); 257 #endif 258 } 259 260 /* 261 * Enable function interrupts. We turn on function interrupts when the card 262 * requests an interrupt. The PCMCIA standard says that we should set 263 * the lower 4 bits to 0 to route via PCI. Note: we call this for both 264 * CardBus and R2 (PC Card) cases, but it should have no effect on CardBus 265 * cards. 266 */ 267 static void 268 cbb_enable_func_intr(struct cbb_softc *sc) 269 { 270 uint8_t reg; 271 272 reg = (exca_getb(&sc->exca, EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) | 273 EXCA_INTR_IRQ_NONE; 274 PCI_MASK_CONFIG(sc->dev, CBBR_BRIDGECTRL, 275 & ~CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2); 276 exca_putb(&sc->exca, EXCA_INTR, reg); 277 } 278 279 int 280 cbb_detach(device_t brdev) 281 { 282 struct cbb_softc *sc = device_get_softc(brdev); 283 device_t *devlist; 284 int tmp, tries, error, numdevs; 285 286 /* 287 * Before we delete the children (which we have to do because 288 * attach doesn't check for children busses correctly), we have 289 * to detach the children. Even if we didn't need to delete the 290 * children, we have to detach them. 291 */ 292 error = bus_generic_detach(brdev); 293 if (error != 0) 294 return (error); 295 296 /* 297 * Since the attach routine doesn't search for children before it 298 * attaches them to this device, we must delete them here in order 299 * for the kldload/unload case to work. If we failed to do that, then 300 * we'd get duplicate devices when cbb.ko was reloaded. 301 */ 302 tries = 10; 303 do { 304 error = device_get_children(brdev, &devlist, &numdevs); 305 if (error == 0) 306 break; 307 /* 308 * Try hard to cope with low memory. 309 */ 310 if (error == ENOMEM) { 311 pause("cbbnomem", 1); 312 continue; 313 } 314 } while (tries-- > 0); 315 for (tmp = 0; tmp < numdevs; tmp++) 316 device_delete_child(brdev, devlist[tmp]); 317 free(devlist, M_TEMP); 318 319 /* Turn off the interrupts */ 320 cbb_set(sc, CBB_SOCKET_MASK, 0); 321 322 /* reset 16-bit pcmcia bus */ 323 exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET); 324 325 /* turn off power */ 326 cbb_power(brdev, CARD_OFF); 327 328 /* Ack the interrupt */ 329 cbb_set(sc, CBB_SOCKET_EVENT, 0xffffffff); 330 331 /* 332 * Wait for the thread to die. kproc_exit will do a wakeup 333 * on the event thread's struct proc * so that we know it is 334 * safe to proceed. IF the thread is running, set the please 335 * die flag and wait for it to comply. Since the wakeup on 336 * the event thread happens only in kproc_exit, we don't 337 * need to loop here. 338 */ 339 bus_teardown_intr(brdev, sc->irq_res, sc->intrhand); 340 mtx_lock(&sc->mtx); 341 sc->flags |= CBB_KTHREAD_DONE; 342 while (sc->flags & CBB_KTHREAD_RUNNING) { 343 DEVPRINTF((sc->dev, "Waiting for thread to die\n")); 344 wakeup(&sc->intrhand); 345 msleep(sc->event_thread, &sc->mtx, PWAIT, "cbbun", 0); 346 } 347 mtx_unlock(&sc->mtx); 348 349 bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res); 350 bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE, 351 sc->base_res); 352 mtx_destroy(&sc->mtx); 353 return (0); 354 } 355 356 int 357 cbb_setup_intr(device_t dev, device_t child, struct resource *irq, 358 int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, 359 void **cookiep) 360 { 361 struct cbb_intrhand *ih; 362 struct cbb_softc *sc = device_get_softc(dev); 363 int err; 364 365 if (filt == NULL && intr == NULL) 366 return (EINVAL); 367 ih = malloc(sizeof(struct cbb_intrhand), M_DEVBUF, M_NOWAIT); 368 if (ih == NULL) 369 return (ENOMEM); 370 *cookiep = ih; 371 ih->filt = filt; 372 ih->intr = intr; 373 ih->arg = arg; 374 ih->sc = sc; 375 /* 376 * XXX need to turn on ISA interrupts, if we ever support them, but 377 * XXX for now that's all we need to do. 378 */ 379 err = BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags, 380 filt ? cbb_func_filt : NULL, intr ? cbb_func_intr : NULL, ih, 381 &ih->cookie); 382 if (err != 0) { 383 free(ih, M_DEVBUF); 384 return (err); 385 } 386 cbb_enable_func_intr(sc); 387 sc->cardok = 1; 388 return 0; 389 } 390 391 int 392 cbb_teardown_intr(device_t dev, device_t child, struct resource *irq, 393 void *cookie) 394 { 395 struct cbb_intrhand *ih; 396 int err; 397 398 /* XXX Need to do different things for ISA interrupts. */ 399 ih = (struct cbb_intrhand *) cookie; 400 err = BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq, 401 ih->cookie); 402 if (err != 0) 403 return (err); 404 free(ih, M_DEVBUF); 405 return (0); 406 } 407 408 409 void 410 cbb_driver_added(device_t brdev, driver_t *driver) 411 { 412 struct cbb_softc *sc = device_get_softc(brdev); 413 device_t *devlist; 414 device_t dev; 415 int tmp; 416 int numdevs; 417 int wake = 0; 418 419 DEVICE_IDENTIFY(driver, brdev); 420 tmp = device_get_children(brdev, &devlist, &numdevs); 421 if (tmp != 0) { 422 device_printf(brdev, "Cannot get children list, no reprobe\n"); 423 return; 424 } 425 for (tmp = 0; tmp < numdevs; tmp++) { 426 dev = devlist[tmp]; 427 if (device_get_state(dev) == DS_NOTPRESENT && 428 device_probe_and_attach(dev) == 0) 429 wake++; 430 } 431 free(devlist, M_TEMP); 432 433 if (wake > 0) 434 wakeup(&sc->intrhand); 435 } 436 437 void 438 cbb_child_detached(device_t brdev, device_t child) 439 { 440 struct cbb_softc *sc = device_get_softc(brdev); 441 442 /* I'm not sure we even need this */ 443 if (child != sc->cbdev && child != sc->exca.pccarddev) 444 device_printf(brdev, "Unknown child detached: %s\n", 445 device_get_nameunit(child)); 446 } 447 448 /************************************************************************/ 449 /* Kthreads */ 450 /************************************************************************/ 451 452 void 453 cbb_event_thread(void *arg) 454 { 455 struct cbb_softc *sc = arg; 456 uint32_t status; 457 int err; 458 int not_a_card = 0; 459 460 /* 461 * We need to act as a power sequencer on startup. Delay 2s/channel 462 * to ensure the other channels have had a chance to come up. We likely 463 * should add a lock that's shared on a per-slot basis so that only 464 * one power event can happen per slot at a time. 465 */ 466 pause("cbbstart", hz * device_get_unit(sc->dev) * 2); 467 mtx_lock(&sc->mtx); 468 sc->flags |= CBB_KTHREAD_RUNNING; 469 while ((sc->flags & CBB_KTHREAD_DONE) == 0) { 470 mtx_unlock(&sc->mtx); 471 status = cbb_get(sc, CBB_SOCKET_STATE); 472 DPRINTF(("Status is 0x%x\n", status)); 473 if (!CBB_CARD_PRESENT(status)) { 474 not_a_card = 0; /* We know card type */ 475 cbb_removal(sc); 476 } else if (status & CBB_STATE_NOT_A_CARD) { 477 /* 478 * Up to 10 times, try to rescan the card when we see 479 * NOT_A_CARD. 10 is somehwat arbitrary. When this 480 * pathology hits, there's a ~40% chance each try will 481 * fail. 10 tries takes about 5s and results in a 482 * 99.99% certainty of the results. 483 */ 484 if (not_a_card++ < 10) { 485 DEVPRINTF((sc->dev, 486 "Not a card bit set, rescanning\n")); 487 cbb_setb(sc, CBB_SOCKET_FORCE, CBB_FORCE_CV_TEST); 488 } else { 489 device_printf(sc->dev, 490 "Can't determine card type\n"); 491 } 492 } else { 493 not_a_card = 0; /* We know card type */ 494 cbb_insert(sc); 495 } 496 497 /* 498 * First time through we need to tell mountroot that we're 499 * done. 500 */ 501 if (sc->sc_root_token) { 502 root_mount_rel(sc->sc_root_token); 503 sc->sc_root_token = NULL; 504 } 505 506 /* 507 * Wait until it has been 250ms since the last time we 508 * get an interrupt. We handle the rest of the interrupt 509 * at the top of the loop. Although we clear the bit in the 510 * ISR, we signal sc->cv from the detach path after we've 511 * set the CBB_KTHREAD_DONE bit, so we can't do a simple 512 * 250ms sleep here. 513 * 514 * In our ISR, we turn off the card changed interrupt. Turn 515 * them back on here before we wait for them to happen. We 516 * turn them on/off so that we can tolerate a large latency 517 * between the time we signal cbb_event_thread and it gets 518 * a chance to run. 519 */ 520 mtx_lock(&sc->mtx); 521 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD | CBB_SOCKET_MASK_CSTS); 522 msleep(&sc->intrhand, &sc->mtx, 0, "-", 0); 523 err = 0; 524 while (err != EWOULDBLOCK && 525 (sc->flags & CBB_KTHREAD_DONE) == 0) 526 err = msleep(&sc->intrhand, &sc->mtx, 0, "-", hz / 5); 527 } 528 DEVPRINTF((sc->dev, "Thread terminating\n")); 529 sc->flags &= ~CBB_KTHREAD_RUNNING; 530 mtx_unlock(&sc->mtx); 531 kproc_exit(0); 532 } 533 534 /************************************************************************/ 535 /* Insert/removal */ 536 /************************************************************************/ 537 538 static void 539 cbb_insert(struct cbb_softc *sc) 540 { 541 uint32_t sockevent, sockstate; 542 543 sockevent = cbb_get(sc, CBB_SOCKET_EVENT); 544 sockstate = cbb_get(sc, CBB_SOCKET_STATE); 545 546 DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n", 547 sockevent, sockstate)); 548 549 if (sockstate & CBB_STATE_R2_CARD) { 550 if (device_is_attached(sc->exca.pccarddev)) { 551 sc->flags |= CBB_16BIT_CARD; 552 exca_insert(&sc->exca); 553 } else { 554 device_printf(sc->dev, 555 "16-bit card inserted, but no pccard bus.\n"); 556 } 557 } else if (sockstate & CBB_STATE_CB_CARD) { 558 if (device_is_attached(sc->cbdev)) { 559 sc->flags &= ~CBB_16BIT_CARD; 560 CARD_ATTACH_CARD(sc->cbdev); 561 } else { 562 device_printf(sc->dev, 563 "CardBus card inserted, but no cardbus bus.\n"); 564 } 565 } else { 566 /* 567 * We should power the card down, and try again a couple of 568 * times if this happens. XXX 569 */ 570 device_printf(sc->dev, "Unsupported card type detected\n"); 571 } 572 } 573 574 static void 575 cbb_removal(struct cbb_softc *sc) 576 { 577 sc->cardok = 0; 578 if (sc->flags & CBB_16BIT_CARD) { 579 exca_removal(&sc->exca); 580 } else { 581 if (device_is_attached(sc->cbdev)) 582 CARD_DETACH_CARD(sc->cbdev); 583 } 584 cbb_destroy_res(sc); 585 } 586 587 /************************************************************************/ 588 /* Interrupt Handler */ 589 /************************************************************************/ 590 591 static int 592 cbb_func_filt(void *arg) 593 { 594 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg; 595 struct cbb_softc *sc = ih->sc; 596 597 /* 598 * Make sure that the card is really there. 599 */ 600 if (!sc->cardok) 601 return (FILTER_STRAY); 602 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 603 sc->cardok = 0; 604 return (FILTER_HANDLED); 605 } 606 607 /* 608 * nb: don't have to check for giant or not, since that's done in the 609 * ISR dispatch and one can't hold Giant in a filter anyway... 610 */ 611 return ((*ih->filt)(ih->arg)); 612 } 613 614 static void 615 cbb_func_intr(void *arg) 616 { 617 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg; 618 struct cbb_softc *sc = ih->sc; 619 620 /* 621 * While this check may seem redundant, it helps close a race 622 * condition. If the card is ejected after the filter runs, but 623 * before this ISR can be scheduled, then we need to do the same 624 * filtering to prevent the card's ISR from being called. One could 625 * argue that the card's ISR should be able to cope, but experience 626 * has shown they can't always. This mitigates the problem by making 627 * the race quite a bit smaller. Properly written client ISRs should 628 * cope with the card going away in the middle of the ISR. We assume 629 * that drivers that are sophisticated enough to use filters don't 630 * need our protection. This also allows us to ensure they *ARE* 631 * called if their filter said they needed to be called. 632 */ 633 if (ih->filt == NULL) { 634 if (!sc->cardok) 635 return; 636 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 637 sc->cardok = 0; 638 return; 639 } 640 } 641 642 /* 643 * Call the registered ithread interrupt handler. This entire routine 644 * will be called with Giant if this isn't an MP safe driver, or not 645 * if it is. Either way, we don't have to worry. 646 */ 647 ih->intr(ih->arg); 648 } 649 650 /************************************************************************/ 651 /* Generic Power functions */ 652 /************************************************************************/ 653 654 static uint32_t 655 cbb_detect_voltage(device_t brdev) 656 { 657 struct cbb_softc *sc = device_get_softc(brdev); 658 uint32_t psr; 659 uint32_t vol = CARD_UKN_CARD; 660 661 psr = cbb_get(sc, CBB_SOCKET_STATE); 662 663 if (psr & CBB_STATE_5VCARD && psr & CBB_STATE_5VSOCK) 664 vol |= CARD_5V_CARD; 665 if (psr & CBB_STATE_3VCARD && psr & CBB_STATE_3VSOCK) 666 vol |= CARD_3V_CARD; 667 if (psr & CBB_STATE_XVCARD && psr & CBB_STATE_XVSOCK) 668 vol |= CARD_XV_CARD; 669 if (psr & CBB_STATE_YVCARD && psr & CBB_STATE_YVSOCK) 670 vol |= CARD_YV_CARD; 671 672 return (vol); 673 } 674 675 static uint8_t 676 cbb_o2micro_power_hack(struct cbb_softc *sc) 677 { 678 uint8_t reg; 679 680 /* 681 * Issue #2: INT# not qualified with IRQ Routing Bit. An 682 * unexpected PCI INT# may be generated during PC Card 683 * initialization even with the IRQ Routing Bit Set with some 684 * PC Cards. 685 * 686 * This is a two part issue. The first part is that some of 687 * our older controllers have an issue in which the slot's PCI 688 * INT# is NOT qualified by the IRQ routing bit (PCI reg. 3Eh 689 * bit 7). Regardless of the IRQ routing bit, if NO ISA IRQ 690 * is selected (ExCA register 03h bits 3:0, of the slot, are 691 * cleared) we will generate INT# if IREQ# is asserted. The 692 * second part is because some PC Cards prematurally assert 693 * IREQ# before the ExCA registers are fully programmed. This 694 * in turn asserts INT# because ExCA register 03h bits 3:0 695 * (ISA IRQ Select) are not yet programmed. 696 * 697 * The fix for this issue, which will work for any controller 698 * (old or new), is to set ExCA register 03h bits 3:0 = 0001b 699 * (select IRQ1), of the slot, before turning on slot power. 700 * Selecting IRQ1 will result in INT# NOT being asserted 701 * (because IRQ1 is selected), and IRQ1 won't be asserted 702 * because our controllers don't generate IRQ1. 703 * 704 * Other, non O2Micro controllers will generate irq 1 in some 705 * situations, so we can't do this hack for everybody. Reports of 706 * keyboard controller's interrupts being suppressed occurred when 707 * we did this. 708 */ 709 reg = exca_getb(&sc->exca, EXCA_INTR); 710 exca_putb(&sc->exca, EXCA_INTR, (reg & 0xf0) | 1); 711 return (reg); 712 } 713 714 /* 715 * Restore the damage that cbb_o2micro_power_hack does to EXCA_INTR so 716 * we don't have an interrupt storm on power on. This has the effect of 717 * disabling card status change interrupts for the duration of poweron. 718 */ 719 static void 720 cbb_o2micro_power_hack2(struct cbb_softc *sc, uint8_t reg) 721 { 722 exca_putb(&sc->exca, EXCA_INTR, reg); 723 } 724 725 int 726 cbb_power(device_t brdev, int volts) 727 { 728 uint32_t status, sock_ctrl, reg_ctrl, mask; 729 struct cbb_softc *sc = device_get_softc(brdev); 730 int cnt, sane; 731 int retval = 0; 732 int on = 0; 733 uint8_t reg = 0; 734 735 sock_ctrl = cbb_get(sc, CBB_SOCKET_CONTROL); 736 737 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK; 738 switch (volts & CARD_VCCMASK) { 739 case 5: 740 sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V; 741 on++; 742 break; 743 case 3: 744 sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V; 745 on++; 746 break; 747 case XV: 748 sock_ctrl |= CBB_SOCKET_CTRL_VCC_XV; 749 on++; 750 break; 751 case YV: 752 sock_ctrl |= CBB_SOCKET_CTRL_VCC_YV; 753 on++; 754 break; 755 case 0: 756 break; 757 default: 758 return (0); /* power NEVER changed */ 759 } 760 761 /* VPP == VCC */ 762 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK; 763 sock_ctrl |= ((sock_ctrl >> 4) & 0x07); 764 765 if (cbb_get(sc, CBB_SOCKET_CONTROL) == sock_ctrl) 766 return (1); /* no change necessary */ 767 DEVPRINTF((sc->dev, "cbb_power: %dV\n", volts)); 768 if (volts != 0 && sc->chipset == CB_O2MICRO) 769 reg = cbb_o2micro_power_hack(sc); 770 771 /* 772 * We have to mask the card change detect interrupt while we're 773 * messing with the power. It is allowed to bounce while we're 774 * messing with power as things settle down. In addition, we mask off 775 * the card's function interrupt by routing it via the ISA bus. This 776 * bit generally only affects 16-bit cards. Some bridges allow one to 777 * set another bit to have it also affect 32-bit cards. Since 32-bit 778 * cards are required to be better behaved, we don't bother to get 779 * into those bridge specific features. 780 * 781 * XXX I wonder if we need to enable the READY bit interrupt in the 782 * EXCA CSC register for 16-bit cards, and disable the CD bit? 783 */ 784 mask = cbb_get(sc, CBB_SOCKET_MASK); 785 mask |= CBB_SOCKET_MASK_POWER; 786 mask &= ~CBB_SOCKET_MASK_CD; 787 cbb_set(sc, CBB_SOCKET_MASK, mask); 788 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, 789 |CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2); 790 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl); 791 if (on) { 792 mtx_lock(&sc->mtx); 793 cnt = sc->powerintr; 794 /* 795 * We have a shortish timeout of 500ms here. Some bridges do 796 * not generate a POWER_CYCLE event for 16-bit cards. In 797 * those cases, we have to cope the best we can, and having 798 * only a short delay is better than the alternatives. Others 799 * raise the power cycle a smidge before it is really ready. 800 * We deal with those below. 801 */ 802 sane = 10; 803 while (!(cbb_get(sc, CBB_SOCKET_STATE) & CBB_STATE_POWER_CYCLE) && 804 cnt == sc->powerintr && sane-- > 0) 805 msleep(&sc->powerintr, &sc->mtx, 0, "-", hz / 20); 806 mtx_unlock(&sc->mtx); 807 808 /* 809 * Relax for 100ms. Some bridges appear to assert this signal 810 * right away, but before the card has stabilized. Other 811 * cards need need more time to cope up reliabily. 812 * Experiments with troublesome setups show this to be a 813 * "cheap" way to enhance reliabilty. We need not do this for 814 * "off" since we don't touch the card after we turn it off. 815 */ 816 pause("cbbPwr", min(hz / 10, 1)); 817 818 /* 819 * The TOPIC95B requires a little bit extra time to get its 820 * act together, so delay for an additional 100ms. Also as 821 * documented below, it doesn't seem to set the POWER_CYCLE 822 * bit, so don't whine if it never came on. 823 */ 824 if (sc->chipset == CB_TOPIC95) 825 pause("cbb95B", hz / 10); 826 else if (sane <= 0) 827 device_printf(sc->dev, "power timeout, doom?\n"); 828 } 829 830 /* 831 * After the power is good, we can turn off the power interrupt. 832 * However, the PC Card standard says that we must delay turning the 833 * CD bit back on for a bit to allow for bouncyness on power down 834 * (recall that we don't wait above for a power down, since we don't 835 * get an interrupt for that). We're called either from the suspend 836 * code in which case we don't want to turn card change on again, or 837 * we're called from the card insertion code, in which case the cbb 838 * thread will turn it on for us before it waits to be woken by a 839 * change event. 840 * 841 * NB: Topic95B doesn't set the power cycle bit. we assume that 842 * both it and the TOPIC95 behave the same. 843 */ 844 cbb_clrb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_POWER); 845 status = cbb_get(sc, CBB_SOCKET_STATE); 846 if (on && sc->chipset != CB_TOPIC95) { 847 if ((status & CBB_STATE_POWER_CYCLE) == 0) 848 device_printf(sc->dev, "Power not on?\n"); 849 } 850 if (status & CBB_STATE_BAD_VCC_REQ) { 851 device_printf(sc->dev, "Bad Vcc requested\n"); 852 /* 853 * Turn off the power, and try again. Retrigger other 854 * active interrupts via force register. From NetBSD 855 * PR 36652, coded by me to description there. 856 */ 857 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK; 858 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK; 859 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl); 860 status &= ~CBB_STATE_BAD_VCC_REQ; 861 status &= ~CBB_STATE_DATA_LOST; 862 status |= CBB_FORCE_CV_TEST; 863 cbb_set(sc, CBB_SOCKET_FORCE, status); 864 goto done; 865 } 866 if (sc->chipset == CB_TOPIC97) { 867 reg_ctrl = pci_read_config(sc->dev, TOPIC_REG_CTRL, 4); 868 reg_ctrl &= ~TOPIC97_REG_CTRL_TESTMODE; 869 if (on) 870 reg_ctrl |= TOPIC97_REG_CTRL_CLKRUN_ENA; 871 else 872 reg_ctrl &= ~TOPIC97_REG_CTRL_CLKRUN_ENA; 873 pci_write_config(sc->dev, TOPIC_REG_CTRL, reg_ctrl, 4); 874 } 875 retval = 1; 876 done:; 877 if (volts != 0 && sc->chipset == CB_O2MICRO) 878 cbb_o2micro_power_hack2(sc, reg); 879 return (retval); 880 } 881 882 static int 883 cbb_current_voltage(device_t brdev) 884 { 885 struct cbb_softc *sc = device_get_softc(brdev); 886 uint32_t ctrl; 887 888 ctrl = cbb_get(sc, CBB_SOCKET_CONTROL); 889 switch (ctrl & CBB_SOCKET_CTRL_VCCMASK) { 890 case CBB_SOCKET_CTRL_VCC_5V: 891 return CARD_5V_CARD; 892 case CBB_SOCKET_CTRL_VCC_3V: 893 return CARD_3V_CARD; 894 case CBB_SOCKET_CTRL_VCC_XV: 895 return CARD_XV_CARD; 896 case CBB_SOCKET_CTRL_VCC_YV: 897 return CARD_YV_CARD; 898 } 899 return 0; 900 } 901 902 /* 903 * detect the voltage for the card, and set it. Since the power 904 * used is the square of the voltage, lower voltages is a big win 905 * and what Windows does (and what Microsoft prefers). The MS paper 906 * also talks about preferring the CIS entry as well, but that has 907 * to be done elsewhere. We also optimize power sequencing here 908 * and don't change things if we're already powered up at a supported 909 * voltage. 910 * 911 * In addition, we power up with OE disabled. We'll set it later 912 * in the power up sequence. 913 */ 914 static int 915 cbb_do_power(device_t brdev) 916 { 917 struct cbb_softc *sc = device_get_softc(brdev); 918 uint32_t voltage, curpwr; 919 uint32_t status; 920 921 /* Don't enable OE (output enable) until power stable */ 922 exca_clrb(&sc->exca, EXCA_PWRCTL, EXCA_PWRCTL_OE); 923 924 voltage = cbb_detect_voltage(brdev); 925 curpwr = cbb_current_voltage(brdev); 926 status = cbb_get(sc, CBB_SOCKET_STATE); 927 if ((status & CBB_STATE_POWER_CYCLE) && (voltage & curpwr)) 928 return 0; 929 /* Prefer lowest voltage supported */ 930 cbb_power(brdev, CARD_OFF); 931 if (voltage & CARD_YV_CARD) 932 cbb_power(brdev, CARD_VCC(YV)); 933 else if (voltage & CARD_XV_CARD) 934 cbb_power(brdev, CARD_VCC(XV)); 935 else if (voltage & CARD_3V_CARD) 936 cbb_power(brdev, CARD_VCC(3)); 937 else if (voltage & CARD_5V_CARD) 938 cbb_power(brdev, CARD_VCC(5)); 939 else { 940 device_printf(brdev, "Unknown card voltage\n"); 941 return (ENXIO); 942 } 943 return (0); 944 } 945 946 /************************************************************************/ 947 /* CardBus power functions */ 948 /************************************************************************/ 949 950 static int 951 cbb_cardbus_reset_power(device_t brdev, device_t child, int on) 952 { 953 struct cbb_softc *sc = device_get_softc(brdev); 954 uint32_t b, h; 955 int delay, count, zero_seen, func; 956 957 /* 958 * Asserting reset for 20ms is necessary for most bridges. For some 959 * reason, the Ricoh RF5C47x bridges need it asserted for 400ms. The 960 * root cause of this is unknown, and NetBSD does the same thing. 961 */ 962 delay = sc->chipset == CB_RF5C47X ? 400 : 20; 963 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2); 964 pause("cbbP3", hz * delay / 1000); 965 966 /* 967 * If a card exists and we're turning it on, take it out of reset. 968 * After clearing reset, wait up to 1.1s for the first configuration 969 * register (vendor/product) configuration register of device 0.0 to 970 * become != 0xffffffff. The PCMCIA PC Card Host System Specification 971 * says that when powering up the card, the PCI Spec v2.1 must be 972 * followed. In PCI spec v2.2 Table 4-6, Trhfa (Reset High to first 973 * Config Access) is at most 2^25 clocks, or just over 1s. Section 974 * 2.2.1 states any card not ready to participate in bus transactions 975 * must tristate its outputs. Therefore, any access to its 976 * configuration registers must be ignored. In that state, the config 977 * reg will read 0xffffffff. Section 6.2.1 states a vendor id of 978 * 0xffff is invalid, so this can never match a real card. Print a 979 * warning if it never returns a real id. The PCMCIA PC Card 980 * Electrical Spec Section 5.2.7.1 implies only device 0 is present on 981 * a cardbus bus, so that's the only register we check here. 982 */ 983 if (on && CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 984 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, 985 &~CBBM_BRIDGECTRL_RESET, 2); 986 b = pcib_get_bus(child); 987 count = 1100 / 20; 988 do { 989 pause("cbbP4", hz * 2 / 100); 990 } while (PCIB_READ_CONFIG(brdev, b, 0, 0, PCIR_DEVVENDOR, 4) == 991 0xfffffffful && --count >= 0); 992 if (count < 0) 993 device_printf(brdev, "Warning: Bus reset timeout\n"); 994 995 /* 996 * Some cards (so far just an atheros card I have) seem to 997 * come out of reset in a funky state. They report they are 998 * multi-function cards, but have nonsense for some of the 999 * higher functions. So if the card claims to be MFDEV, and 1000 * any of the higher functions' ID is 0, then we've hit the 1001 * bug and we'll try again. 1002 */ 1003 h = PCIB_READ_CONFIG(brdev, b, 0, 0, PCIR_HDRTYPE, 1); 1004 if ((h & PCIM_MFDEV) == 0) 1005 return 0; 1006 zero_seen = 0; 1007 for (func = 1; func < 8; func++) { 1008 h = PCIB_READ_CONFIG(brdev, b, 0, func, 1009 PCIR_DEVVENDOR, 4); 1010 if (h == 0) 1011 zero_seen++; 1012 } 1013 if (!zero_seen) 1014 return 0; 1015 return (EINVAL); 1016 } 1017 return 0; 1018 } 1019 1020 static int 1021 cbb_cardbus_power_disable_socket(device_t brdev, device_t child) 1022 { 1023 cbb_power(brdev, CARD_OFF); 1024 cbb_cardbus_reset_power(brdev, child, 0); 1025 return (0); 1026 } 1027 1028 static int 1029 cbb_cardbus_power_enable_socket(device_t brdev, device_t child) 1030 { 1031 struct cbb_softc *sc = device_get_softc(brdev); 1032 int err, count; 1033 1034 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) 1035 return (ENODEV); 1036 1037 count = 10; 1038 do { 1039 err = cbb_do_power(brdev); 1040 if (err) 1041 return (err); 1042 err = cbb_cardbus_reset_power(brdev, child, 1); 1043 if (err) { 1044 device_printf(brdev, "Reset failed, trying again.\n"); 1045 cbb_cardbus_power_disable_socket(brdev, child); 1046 pause("cbbErr1", hz / 10); /* wait 100ms */ 1047 } 1048 } while (err != 0 && count-- > 0); 1049 return (0); 1050 } 1051 1052 /************************************************************************/ 1053 /* CardBus Resource */ 1054 /************************************************************************/ 1055 1056 static void 1057 cbb_activate_window(device_t brdev, int type) 1058 { 1059 1060 PCI_ENABLE_IO(device_get_parent(brdev), brdev, type); 1061 } 1062 1063 static int 1064 cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end) 1065 { 1066 int basereg; 1067 int limitreg; 1068 1069 if ((win < 0) || (win > 1)) { 1070 DEVPRINTF((brdev, 1071 "cbb_cardbus_io_open: window out of range %d\n", win)); 1072 return (EINVAL); 1073 } 1074 1075 basereg = win * 8 + CBBR_IOBASE0; 1076 limitreg = win * 8 + CBBR_IOLIMIT0; 1077 1078 pci_write_config(brdev, basereg, start, 4); 1079 pci_write_config(brdev, limitreg, end, 4); 1080 cbb_activate_window(brdev, SYS_RES_IOPORT); 1081 return (0); 1082 } 1083 1084 static int 1085 cbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end) 1086 { 1087 int basereg; 1088 int limitreg; 1089 1090 if ((win < 0) || (win > 1)) { 1091 DEVPRINTF((brdev, 1092 "cbb_cardbus_mem_open: window out of range %d\n", win)); 1093 return (EINVAL); 1094 } 1095 1096 basereg = win * 8 + CBBR_MEMBASE0; 1097 limitreg = win * 8 + CBBR_MEMLIMIT0; 1098 1099 pci_write_config(brdev, basereg, start, 4); 1100 pci_write_config(brdev, limitreg, end, 4); 1101 cbb_activate_window(brdev, SYS_RES_MEMORY); 1102 return (0); 1103 } 1104 1105 #define START_NONE 0xffffffff 1106 #define END_NONE 0 1107 1108 static void 1109 cbb_cardbus_auto_open(struct cbb_softc *sc, int type) 1110 { 1111 uint32_t starts[2]; 1112 uint32_t ends[2]; 1113 struct cbb_reslist *rle; 1114 int align, i; 1115 uint32_t reg; 1116 1117 starts[0] = starts[1] = START_NONE; 1118 ends[0] = ends[1] = END_NONE; 1119 1120 if (type == SYS_RES_MEMORY) 1121 align = CBB_MEMALIGN; 1122 else if (type == SYS_RES_IOPORT) 1123 align = CBB_IOALIGN; 1124 else 1125 align = 1; 1126 1127 SLIST_FOREACH(rle, &sc->rl, link) { 1128 if (rle->type != type) 1129 continue; 1130 if (rle->res == NULL) 1131 continue; 1132 if (!(rman_get_flags(rle->res) & RF_ACTIVE)) 1133 continue; 1134 if (rman_get_flags(rle->res) & RF_PREFETCHABLE) 1135 i = 1; 1136 else 1137 i = 0; 1138 if (rman_get_start(rle->res) < starts[i]) 1139 starts[i] = rman_get_start(rle->res); 1140 if (rman_get_end(rle->res) > ends[i]) 1141 ends[i] = rman_get_end(rle->res); 1142 } 1143 for (i = 0; i < 2; i++) { 1144 if (starts[i] == START_NONE) 1145 continue; 1146 starts[i] &= ~(align - 1); 1147 ends[i] = roundup2(ends[i], align) - 1; 1148 } 1149 if (starts[0] != START_NONE && starts[1] != START_NONE) { 1150 if (starts[0] < starts[1]) { 1151 if (ends[0] > starts[1]) { 1152 device_printf(sc->dev, "Overlapping ranges" 1153 " for prefetch and non-prefetch memory\n"); 1154 return; 1155 } 1156 } else { 1157 if (ends[1] > starts[0]) { 1158 device_printf(sc->dev, "Overlapping ranges" 1159 " for prefetch and non-prefetch memory\n"); 1160 return; 1161 } 1162 } 1163 } 1164 1165 if (type == SYS_RES_MEMORY) { 1166 cbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]); 1167 cbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]); 1168 reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2); 1169 reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0 | 1170 CBBM_BRIDGECTRL_PREFETCH_1); 1171 if (starts[1] != START_NONE) 1172 reg |= CBBM_BRIDGECTRL_PREFETCH_1; 1173 pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2); 1174 if (bootverbose) { 1175 device_printf(sc->dev, "Opening memory:\n"); 1176 if (starts[0] != START_NONE) 1177 device_printf(sc->dev, "Normal: %#x-%#x\n", 1178 starts[0], ends[0]); 1179 if (starts[1] != START_NONE) 1180 device_printf(sc->dev, "Prefetch: %#x-%#x\n", 1181 starts[1], ends[1]); 1182 } 1183 } else if (type == SYS_RES_IOPORT) { 1184 cbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]); 1185 cbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]); 1186 if (bootverbose && starts[0] != START_NONE) 1187 device_printf(sc->dev, "Opening I/O: %#x-%#x\n", 1188 starts[0], ends[0]); 1189 } 1190 } 1191 1192 static int 1193 cbb_cardbus_activate_resource(device_t brdev, device_t child, int type, 1194 int rid, struct resource *res) 1195 { 1196 int ret; 1197 1198 ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child, 1199 type, rid, res); 1200 if (ret != 0) 1201 return (ret); 1202 cbb_cardbus_auto_open(device_get_softc(brdev), type); 1203 return (0); 1204 } 1205 1206 static int 1207 cbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type, 1208 int rid, struct resource *res) 1209 { 1210 int ret; 1211 1212 ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child, 1213 type, rid, res); 1214 if (ret != 0) 1215 return (ret); 1216 cbb_cardbus_auto_open(device_get_softc(brdev), type); 1217 return (0); 1218 } 1219 1220 static struct resource * 1221 cbb_cardbus_alloc_resource(device_t brdev, device_t child, int type, 1222 int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1223 { 1224 struct cbb_softc *sc = device_get_softc(brdev); 1225 int tmp; 1226 struct resource *res; 1227 rman_res_t align; 1228 1229 switch (type) { 1230 case SYS_RES_IRQ: 1231 tmp = rman_get_start(sc->irq_res); 1232 if (start > tmp || end < tmp || count != 1) { 1233 device_printf(child, "requested interrupt %jd-%jd," 1234 "count = %jd not supported by cbb\n", 1235 start, end, count); 1236 return (NULL); 1237 } 1238 start = end = tmp; 1239 flags |= RF_SHAREABLE; 1240 break; 1241 case SYS_RES_IOPORT: 1242 if (start <= cbb_start_32_io) 1243 start = cbb_start_32_io; 1244 if (end < start) 1245 end = start; 1246 if (count > (1 << RF_ALIGNMENT(flags))) 1247 flags = (flags & ~RF_ALIGNMENT_MASK) | 1248 rman_make_alignment_flags(count); 1249 break; 1250 case SYS_RES_MEMORY: 1251 if (start <= cbb_start_mem) 1252 start = cbb_start_mem; 1253 if (end < start) 1254 end = start; 1255 if (count < CBB_MEMALIGN) 1256 align = CBB_MEMALIGN; 1257 else 1258 align = count; 1259 if (align > (1 << RF_ALIGNMENT(flags))) 1260 flags = (flags & ~RF_ALIGNMENT_MASK) | 1261 rman_make_alignment_flags(align); 1262 break; 1263 } 1264 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid, 1265 start, end, count, flags & ~RF_ACTIVE); 1266 if (res == NULL) { 1267 printf("cbb alloc res fail type %d rid %x\n", type, *rid); 1268 return (NULL); 1269 } 1270 cbb_insert_res(sc, res, type, *rid); 1271 if (flags & RF_ACTIVE) 1272 if (bus_activate_resource(child, type, *rid, res) != 0) { 1273 bus_release_resource(child, type, *rid, res); 1274 return (NULL); 1275 } 1276 1277 return (res); 1278 } 1279 1280 static int 1281 cbb_cardbus_release_resource(device_t brdev, device_t child, int type, 1282 int rid, struct resource *res) 1283 { 1284 struct cbb_softc *sc = device_get_softc(brdev); 1285 int error; 1286 1287 if (rman_get_flags(res) & RF_ACTIVE) { 1288 error = bus_deactivate_resource(child, type, rid, res); 1289 if (error != 0) 1290 return (error); 1291 } 1292 cbb_remove_res(sc, res); 1293 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 1294 type, rid, res)); 1295 } 1296 1297 /************************************************************************/ 1298 /* PC Card Power Functions */ 1299 /************************************************************************/ 1300 1301 static int 1302 cbb_pcic_power_enable_socket(device_t brdev, device_t child) 1303 { 1304 struct cbb_softc *sc = device_get_softc(brdev); 1305 int err; 1306 1307 DPRINTF(("cbb_pcic_socket_enable:\n")); 1308 1309 /* power down/up the socket to reset */ 1310 err = cbb_do_power(brdev); 1311 if (err) 1312 return (err); 1313 exca_reset(&sc->exca, child); 1314 1315 return (0); 1316 } 1317 1318 static int 1319 cbb_pcic_power_disable_socket(device_t brdev, device_t child) 1320 { 1321 struct cbb_softc *sc = device_get_softc(brdev); 1322 1323 DPRINTF(("cbb_pcic_socket_disable\n")); 1324 1325 /* Turn off the card's interrupt and leave it in reset, wait 10ms */ 1326 exca_putb(&sc->exca, EXCA_INTR, 0); 1327 pause("cbbP1", hz / 100); 1328 1329 /* power down the socket */ 1330 cbb_power(brdev, CARD_OFF); 1331 exca_putb(&sc->exca, EXCA_PWRCTL, 0); 1332 1333 /* wait 300ms until power fails (Tpf). */ 1334 pause("cbbP2", hz * 300 / 1000); 1335 1336 /* enable CSC interrupts */ 1337 exca_putb(&sc->exca, EXCA_INTR, EXCA_INTR_ENABLE); 1338 return (0); 1339 } 1340 1341 /************************************************************************/ 1342 /* POWER methods */ 1343 /************************************************************************/ 1344 1345 int 1346 cbb_power_enable_socket(device_t brdev, device_t child) 1347 { 1348 struct cbb_softc *sc = device_get_softc(brdev); 1349 1350 if (sc->flags & CBB_16BIT_CARD) 1351 return (cbb_pcic_power_enable_socket(brdev, child)); 1352 return (cbb_cardbus_power_enable_socket(brdev, child)); 1353 } 1354 1355 int 1356 cbb_power_disable_socket(device_t brdev, device_t child) 1357 { 1358 struct cbb_softc *sc = device_get_softc(brdev); 1359 if (sc->flags & CBB_16BIT_CARD) 1360 return (cbb_pcic_power_disable_socket(brdev, child)); 1361 return (cbb_cardbus_power_disable_socket(brdev, child)); 1362 } 1363 1364 static int 1365 cbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid, 1366 struct resource *res) 1367 { 1368 struct cbb_softc *sc = device_get_softc(brdev); 1369 int error; 1370 1371 error = exca_activate_resource(&sc->exca, child, type, rid, res); 1372 if (error == 0) 1373 cbb_activate_window(brdev, type); 1374 return (error); 1375 } 1376 1377 static int 1378 cbb_pcic_deactivate_resource(device_t brdev, device_t child, int type, 1379 int rid, struct resource *res) 1380 { 1381 struct cbb_softc *sc = device_get_softc(brdev); 1382 return (exca_deactivate_resource(&sc->exca, child, type, rid, res)); 1383 } 1384 1385 static struct resource * 1386 cbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid, 1387 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1388 { 1389 struct resource *res = NULL; 1390 struct cbb_softc *sc = device_get_softc(brdev); 1391 int align; 1392 int tmp; 1393 1394 switch (type) { 1395 case SYS_RES_MEMORY: 1396 if (start < cbb_start_mem) 1397 start = cbb_start_mem; 1398 if (end < start) 1399 end = start; 1400 if (count < CBB_MEMALIGN) 1401 align = CBB_MEMALIGN; 1402 else 1403 align = count; 1404 if (align > (1 << RF_ALIGNMENT(flags))) 1405 flags = (flags & ~RF_ALIGNMENT_MASK) | 1406 rman_make_alignment_flags(align); 1407 break; 1408 case SYS_RES_IOPORT: 1409 if (start < cbb_start_16_io) 1410 start = cbb_start_16_io; 1411 if (end < start) 1412 end = start; 1413 break; 1414 case SYS_RES_IRQ: 1415 tmp = rman_get_start(sc->irq_res); 1416 if (start > tmp || end < tmp || count != 1) { 1417 device_printf(child, "requested interrupt %jd-%jd," 1418 "count = %jd not supported by cbb\n", 1419 start, end, count); 1420 return (NULL); 1421 } 1422 flags |= RF_SHAREABLE; 1423 start = end = rman_get_start(sc->irq_res); 1424 break; 1425 } 1426 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid, 1427 start, end, count, flags & ~RF_ACTIVE); 1428 if (res == NULL) 1429 return (NULL); 1430 cbb_insert_res(sc, res, type, *rid); 1431 if (flags & RF_ACTIVE) { 1432 if (bus_activate_resource(child, type, *rid, res) != 0) { 1433 bus_release_resource(child, type, *rid, res); 1434 return (NULL); 1435 } 1436 } 1437 1438 return (res); 1439 } 1440 1441 static int 1442 cbb_pcic_release_resource(device_t brdev, device_t child, int type, 1443 int rid, struct resource *res) 1444 { 1445 struct cbb_softc *sc = device_get_softc(brdev); 1446 int error; 1447 1448 if (rman_get_flags(res) & RF_ACTIVE) { 1449 error = bus_deactivate_resource(child, type, rid, res); 1450 if (error != 0) 1451 return (error); 1452 } 1453 cbb_remove_res(sc, res); 1454 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 1455 type, rid, res)); 1456 } 1457 1458 /************************************************************************/ 1459 /* PC Card methods */ 1460 /************************************************************************/ 1461 1462 int 1463 cbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid, 1464 u_long flags) 1465 { 1466 struct cbb_softc *sc = device_get_softc(brdev); 1467 struct resource *res; 1468 1469 if (type != SYS_RES_MEMORY) 1470 return (EINVAL); 1471 res = cbb_find_res(sc, type, rid); 1472 if (res == NULL) { 1473 device_printf(brdev, 1474 "set_res_flags: specified rid not found\n"); 1475 return (ENOENT); 1476 } 1477 return (exca_mem_set_flags(&sc->exca, res, flags)); 1478 } 1479 1480 int 1481 cbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid, 1482 uint32_t cardaddr, uint32_t *deltap) 1483 { 1484 struct cbb_softc *sc = device_get_softc(brdev); 1485 struct resource *res; 1486 1487 res = cbb_find_res(sc, SYS_RES_MEMORY, rid); 1488 if (res == NULL) { 1489 device_printf(brdev, 1490 "set_memory_offset: specified rid not found\n"); 1491 return (ENOENT); 1492 } 1493 return (exca_mem_set_offset(&sc->exca, res, cardaddr, deltap)); 1494 } 1495 1496 /************************************************************************/ 1497 /* BUS Methods */ 1498 /************************************************************************/ 1499 1500 1501 int 1502 cbb_activate_resource(device_t brdev, device_t child, int type, int rid, 1503 struct resource *r) 1504 { 1505 struct cbb_softc *sc = device_get_softc(brdev); 1506 1507 if (sc->flags & CBB_16BIT_CARD) 1508 return (cbb_pcic_activate_resource(brdev, child, type, rid, r)); 1509 else 1510 return (cbb_cardbus_activate_resource(brdev, child, type, rid, 1511 r)); 1512 } 1513 1514 int 1515 cbb_deactivate_resource(device_t brdev, device_t child, int type, 1516 int rid, struct resource *r) 1517 { 1518 struct cbb_softc *sc = device_get_softc(brdev); 1519 1520 if (sc->flags & CBB_16BIT_CARD) 1521 return (cbb_pcic_deactivate_resource(brdev, child, type, 1522 rid, r)); 1523 else 1524 return (cbb_cardbus_deactivate_resource(brdev, child, type, 1525 rid, r)); 1526 } 1527 1528 struct resource * 1529 cbb_alloc_resource(device_t brdev, device_t child, int type, int *rid, 1530 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1531 { 1532 struct cbb_softc *sc = device_get_softc(brdev); 1533 1534 if (sc->flags & CBB_16BIT_CARD) 1535 return (cbb_pcic_alloc_resource(brdev, child, type, rid, 1536 start, end, count, flags)); 1537 else 1538 return (cbb_cardbus_alloc_resource(brdev, child, type, rid, 1539 start, end, count, flags)); 1540 } 1541 1542 int 1543 cbb_release_resource(device_t brdev, device_t child, int type, int rid, 1544 struct resource *r) 1545 { 1546 struct cbb_softc *sc = device_get_softc(brdev); 1547 1548 if (sc->flags & CBB_16BIT_CARD) 1549 return (cbb_pcic_release_resource(brdev, child, type, 1550 rid, r)); 1551 else 1552 return (cbb_cardbus_release_resource(brdev, child, type, 1553 rid, r)); 1554 } 1555 1556 int 1557 cbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result) 1558 { 1559 struct cbb_softc *sc = device_get_softc(brdev); 1560 1561 switch (which) { 1562 case PCIB_IVAR_DOMAIN: 1563 *result = sc->domain; 1564 return (0); 1565 case PCIB_IVAR_BUS: 1566 *result = sc->bus.sec; 1567 return (0); 1568 case EXCA_IVAR_SLOT: 1569 *result = 0; 1570 return (0); 1571 } 1572 return (ENOENT); 1573 } 1574 1575 int 1576 cbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value) 1577 { 1578 1579 switch (which) { 1580 case PCIB_IVAR_DOMAIN: 1581 return (EINVAL); 1582 case PCIB_IVAR_BUS: 1583 return (EINVAL); 1584 case EXCA_IVAR_SLOT: 1585 return (EINVAL); 1586 } 1587 return (ENOENT); 1588 } 1589 1590 int 1591 cbb_child_present(device_t parent, device_t child) 1592 { 1593 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(parent); 1594 uint32_t sockstate; 1595 1596 sockstate = cbb_get(sc, CBB_SOCKET_STATE); 1597 return (CBB_CARD_PRESENT(sockstate) && sc->cardok); 1598 } 1599