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 void 409 cbb_driver_added(device_t brdev, driver_t *driver) 410 { 411 struct cbb_softc *sc = device_get_softc(brdev); 412 device_t *devlist; 413 device_t dev; 414 int tmp; 415 int numdevs; 416 int wake = 0; 417 418 DEVICE_IDENTIFY(driver, brdev); 419 tmp = device_get_children(brdev, &devlist, &numdevs); 420 if (tmp != 0) { 421 device_printf(brdev, "Cannot get children list, no reprobe\n"); 422 return; 423 } 424 for (tmp = 0; tmp < numdevs; tmp++) { 425 dev = devlist[tmp]; 426 if (device_get_state(dev) == DS_NOTPRESENT && 427 device_probe_and_attach(dev) == 0) 428 wake++; 429 } 430 free(devlist, M_TEMP); 431 432 if (wake > 0) 433 wakeup(&sc->intrhand); 434 } 435 436 void 437 cbb_child_detached(device_t brdev, device_t child) 438 { 439 struct cbb_softc *sc = device_get_softc(brdev); 440 441 /* I'm not sure we even need this */ 442 if (child != sc->cbdev && child != sc->exca.pccarddev) 443 device_printf(brdev, "Unknown child detached: %s\n", 444 device_get_nameunit(child)); 445 } 446 447 /************************************************************************/ 448 /* Kthreads */ 449 /************************************************************************/ 450 451 void 452 cbb_event_thread(void *arg) 453 { 454 struct cbb_softc *sc = arg; 455 uint32_t status; 456 int err; 457 int not_a_card = 0; 458 459 /* 460 * We need to act as a power sequencer on startup. Delay 2s/channel 461 * to ensure the other channels have had a chance to come up. We likely 462 * should add a lock that's shared on a per-slot basis so that only 463 * one power event can happen per slot at a time. 464 */ 465 pause("cbbstart", hz * device_get_unit(sc->dev) * 2); 466 mtx_lock(&sc->mtx); 467 sc->flags |= CBB_KTHREAD_RUNNING; 468 while ((sc->flags & CBB_KTHREAD_DONE) == 0) { 469 mtx_unlock(&sc->mtx); 470 status = cbb_get(sc, CBB_SOCKET_STATE); 471 DPRINTF(("Status is 0x%x\n", status)); 472 if (!CBB_CARD_PRESENT(status)) { 473 not_a_card = 0; /* We know card type */ 474 cbb_removal(sc); 475 } else if (status & CBB_STATE_NOT_A_CARD) { 476 /* 477 * Up to 10 times, try to rescan the card when we see 478 * NOT_A_CARD. 10 is somehwat arbitrary. When this 479 * pathology hits, there's a ~40% chance each try will 480 * fail. 10 tries takes about 5s and results in a 481 * 99.99% certainty of the results. 482 */ 483 if (not_a_card++ < 10) { 484 DEVPRINTF((sc->dev, 485 "Not a card bit set, rescanning\n")); 486 cbb_setb(sc, CBB_SOCKET_FORCE, CBB_FORCE_CV_TEST); 487 } else { 488 device_printf(sc->dev, 489 "Can't determine card type\n"); 490 } 491 } else { 492 not_a_card = 0; /* We know card type */ 493 cbb_insert(sc); 494 } 495 496 /* 497 * First time through we need to tell mountroot that we're 498 * done. 499 */ 500 if (sc->sc_root_token) { 501 root_mount_rel(sc->sc_root_token); 502 sc->sc_root_token = NULL; 503 } 504 505 /* 506 * Wait until it has been 250ms since the last time we 507 * get an interrupt. We handle the rest of the interrupt 508 * at the top of the loop. Although we clear the bit in the 509 * ISR, we signal sc->cv from the detach path after we've 510 * set the CBB_KTHREAD_DONE bit, so we can't do a simple 511 * 250ms sleep here. 512 * 513 * In our ISR, we turn off the card changed interrupt. Turn 514 * them back on here before we wait for them to happen. We 515 * turn them on/off so that we can tolerate a large latency 516 * between the time we signal cbb_event_thread and it gets 517 * a chance to run. 518 */ 519 mtx_lock(&sc->mtx); 520 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD | CBB_SOCKET_MASK_CSTS); 521 msleep(&sc->intrhand, &sc->mtx, 0, "-", 0); 522 err = 0; 523 while (err != EWOULDBLOCK && 524 (sc->flags & CBB_KTHREAD_DONE) == 0) 525 err = msleep(&sc->intrhand, &sc->mtx, 0, "-", hz / 5); 526 } 527 DEVPRINTF((sc->dev, "Thread terminating\n")); 528 sc->flags &= ~CBB_KTHREAD_RUNNING; 529 mtx_unlock(&sc->mtx); 530 kproc_exit(0); 531 } 532 533 /************************************************************************/ 534 /* Insert/removal */ 535 /************************************************************************/ 536 537 static void 538 cbb_insert(struct cbb_softc *sc) 539 { 540 uint32_t sockevent, sockstate; 541 542 sockevent = cbb_get(sc, CBB_SOCKET_EVENT); 543 sockstate = cbb_get(sc, CBB_SOCKET_STATE); 544 545 DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n", 546 sockevent, sockstate)); 547 548 if (sockstate & CBB_STATE_R2_CARD) { 549 if (device_is_attached(sc->exca.pccarddev)) { 550 sc->flags |= CBB_16BIT_CARD; 551 exca_insert(&sc->exca); 552 } else { 553 device_printf(sc->dev, 554 "16-bit card inserted, but no pccard bus.\n"); 555 } 556 } else if (sockstate & CBB_STATE_CB_CARD) { 557 if (device_is_attached(sc->cbdev)) { 558 sc->flags &= ~CBB_16BIT_CARD; 559 CARD_ATTACH_CARD(sc->cbdev); 560 } else { 561 device_printf(sc->dev, 562 "CardBus card inserted, but no cardbus bus.\n"); 563 } 564 } else { 565 /* 566 * We should power the card down, and try again a couple of 567 * times if this happens. XXX 568 */ 569 device_printf(sc->dev, "Unsupported card type detected\n"); 570 } 571 } 572 573 static void 574 cbb_removal(struct cbb_softc *sc) 575 { 576 sc->cardok = 0; 577 if (sc->flags & CBB_16BIT_CARD) { 578 exca_removal(&sc->exca); 579 } else { 580 if (device_is_attached(sc->cbdev)) 581 CARD_DETACH_CARD(sc->cbdev); 582 } 583 cbb_destroy_res(sc); 584 } 585 586 /************************************************************************/ 587 /* Interrupt Handler */ 588 /************************************************************************/ 589 590 static int 591 cbb_func_filt(void *arg) 592 { 593 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg; 594 struct cbb_softc *sc = ih->sc; 595 596 /* 597 * Make sure that the card is really there. 598 */ 599 if (!sc->cardok) 600 return (FILTER_STRAY); 601 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 602 sc->cardok = 0; 603 return (FILTER_HANDLED); 604 } 605 606 return ((*ih->filt)(ih->arg)); 607 } 608 609 static void 610 cbb_func_intr(void *arg) 611 { 612 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg; 613 struct cbb_softc *sc = ih->sc; 614 615 /* 616 * While this check may seem redundant, it helps close a race 617 * condition. If the card is ejected after the filter runs, but 618 * before this ISR can be scheduled, then we need to do the same 619 * filtering to prevent the card's ISR from being called. One could 620 * argue that the card's ISR should be able to cope, but experience 621 * has shown they can't always. This mitigates the problem by making 622 * the race quite a bit smaller. Properly written client ISRs should 623 * cope with the card going away in the middle of the ISR. We assume 624 * that drivers that are sophisticated enough to use filters don't 625 * need our protection. This also allows us to ensure they *ARE* 626 * called if their filter said they needed to be called. 627 */ 628 if (ih->filt == NULL) { 629 if (!sc->cardok) 630 return; 631 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 632 sc->cardok = 0; 633 return; 634 } 635 } 636 637 ih->intr(ih->arg); 638 } 639 640 /************************************************************************/ 641 /* Generic Power functions */ 642 /************************************************************************/ 643 644 static uint32_t 645 cbb_detect_voltage(device_t brdev) 646 { 647 struct cbb_softc *sc = device_get_softc(brdev); 648 uint32_t psr; 649 uint32_t vol = CARD_UKN_CARD; 650 651 psr = cbb_get(sc, CBB_SOCKET_STATE); 652 653 if (psr & CBB_STATE_5VCARD && psr & CBB_STATE_5VSOCK) 654 vol |= CARD_5V_CARD; 655 if (psr & CBB_STATE_3VCARD && psr & CBB_STATE_3VSOCK) 656 vol |= CARD_3V_CARD; 657 if (psr & CBB_STATE_XVCARD && psr & CBB_STATE_XVSOCK) 658 vol |= CARD_XV_CARD; 659 if (psr & CBB_STATE_YVCARD && psr & CBB_STATE_YVSOCK) 660 vol |= CARD_YV_CARD; 661 662 return (vol); 663 } 664 665 static uint8_t 666 cbb_o2micro_power_hack(struct cbb_softc *sc) 667 { 668 uint8_t reg; 669 670 /* 671 * Issue #2: INT# not qualified with IRQ Routing Bit. An 672 * unexpected PCI INT# may be generated during PC Card 673 * initialization even with the IRQ Routing Bit Set with some 674 * PC Cards. 675 * 676 * This is a two part issue. The first part is that some of 677 * our older controllers have an issue in which the slot's PCI 678 * INT# is NOT qualified by the IRQ routing bit (PCI reg. 3Eh 679 * bit 7). Regardless of the IRQ routing bit, if NO ISA IRQ 680 * is selected (ExCA register 03h bits 3:0, of the slot, are 681 * cleared) we will generate INT# if IREQ# is asserted. The 682 * second part is because some PC Cards prematurally assert 683 * IREQ# before the ExCA registers are fully programmed. This 684 * in turn asserts INT# because ExCA register 03h bits 3:0 685 * (ISA IRQ Select) are not yet programmed. 686 * 687 * The fix for this issue, which will work for any controller 688 * (old or new), is to set ExCA register 03h bits 3:0 = 0001b 689 * (select IRQ1), of the slot, before turning on slot power. 690 * Selecting IRQ1 will result in INT# NOT being asserted 691 * (because IRQ1 is selected), and IRQ1 won't be asserted 692 * because our controllers don't generate IRQ1. 693 * 694 * Other, non O2Micro controllers will generate irq 1 in some 695 * situations, so we can't do this hack for everybody. Reports of 696 * keyboard controller's interrupts being suppressed occurred when 697 * we did this. 698 */ 699 reg = exca_getb(&sc->exca, EXCA_INTR); 700 exca_putb(&sc->exca, EXCA_INTR, (reg & 0xf0) | 1); 701 return (reg); 702 } 703 704 /* 705 * Restore the damage that cbb_o2micro_power_hack does to EXCA_INTR so 706 * we don't have an interrupt storm on power on. This has the effect of 707 * disabling card status change interrupts for the duration of poweron. 708 */ 709 static void 710 cbb_o2micro_power_hack2(struct cbb_softc *sc, uint8_t reg) 711 { 712 exca_putb(&sc->exca, EXCA_INTR, reg); 713 } 714 715 int 716 cbb_power(device_t brdev, int volts) 717 { 718 uint32_t status, sock_ctrl, reg_ctrl, mask; 719 struct cbb_softc *sc = device_get_softc(brdev); 720 int cnt, sane; 721 int retval = 0; 722 int on = 0; 723 uint8_t reg = 0; 724 725 sock_ctrl = cbb_get(sc, CBB_SOCKET_CONTROL); 726 727 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK; 728 switch (volts & CARD_VCCMASK) { 729 case 5: 730 sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V; 731 on++; 732 break; 733 case 3: 734 sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V; 735 on++; 736 break; 737 case XV: 738 sock_ctrl |= CBB_SOCKET_CTRL_VCC_XV; 739 on++; 740 break; 741 case YV: 742 sock_ctrl |= CBB_SOCKET_CTRL_VCC_YV; 743 on++; 744 break; 745 case 0: 746 break; 747 default: 748 return (0); /* power NEVER changed */ 749 } 750 751 /* VPP == VCC */ 752 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK; 753 sock_ctrl |= ((sock_ctrl >> 4) & 0x07); 754 755 if (cbb_get(sc, CBB_SOCKET_CONTROL) == sock_ctrl) 756 return (1); /* no change necessary */ 757 DEVPRINTF((sc->dev, "cbb_power: %dV\n", volts)); 758 if (volts != 0 && sc->chipset == CB_O2MICRO) 759 reg = cbb_o2micro_power_hack(sc); 760 761 /* 762 * We have to mask the card change detect interrupt while we're 763 * messing with the power. It is allowed to bounce while we're 764 * messing with power as things settle down. In addition, we mask off 765 * the card's function interrupt by routing it via the ISA bus. This 766 * bit generally only affects 16-bit cards. Some bridges allow one to 767 * set another bit to have it also affect 32-bit cards. Since 32-bit 768 * cards are required to be better behaved, we don't bother to get 769 * into those bridge specific features. 770 * 771 * XXX I wonder if we need to enable the READY bit interrupt in the 772 * EXCA CSC register for 16-bit cards, and disable the CD bit? 773 */ 774 mask = cbb_get(sc, CBB_SOCKET_MASK); 775 mask |= CBB_SOCKET_MASK_POWER; 776 mask &= ~CBB_SOCKET_MASK_CD; 777 cbb_set(sc, CBB_SOCKET_MASK, mask); 778 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, 779 |CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2); 780 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl); 781 if (on) { 782 mtx_lock(&sc->mtx); 783 cnt = sc->powerintr; 784 /* 785 * We have a shortish timeout of 500ms here. Some bridges do 786 * not generate a POWER_CYCLE event for 16-bit cards. In 787 * those cases, we have to cope the best we can, and having 788 * only a short delay is better than the alternatives. Others 789 * raise the power cycle a smidge before it is really ready. 790 * We deal with those below. 791 */ 792 sane = 10; 793 while (!(cbb_get(sc, CBB_SOCKET_STATE) & CBB_STATE_POWER_CYCLE) && 794 cnt == sc->powerintr && sane-- > 0) 795 msleep(&sc->powerintr, &sc->mtx, 0, "-", hz / 20); 796 mtx_unlock(&sc->mtx); 797 798 /* 799 * Relax for 100ms. Some bridges appear to assert this signal 800 * right away, but before the card has stabilized. Other 801 * cards need need more time to cope up reliabily. 802 * Experiments with troublesome setups show this to be a 803 * "cheap" way to enhance reliabilty. We need not do this for 804 * "off" since we don't touch the card after we turn it off. 805 */ 806 pause("cbbPwr", min(hz / 10, 1)); 807 808 /* 809 * The TOPIC95B requires a little bit extra time to get its 810 * act together, so delay for an additional 100ms. Also as 811 * documented below, it doesn't seem to set the POWER_CYCLE 812 * bit, so don't whine if it never came on. 813 */ 814 if (sc->chipset == CB_TOPIC95) 815 pause("cbb95B", hz / 10); 816 else if (sane <= 0) 817 device_printf(sc->dev, "power timeout, doom?\n"); 818 } 819 820 /* 821 * After the power is good, we can turn off the power interrupt. 822 * However, the PC Card standard says that we must delay turning the 823 * CD bit back on for a bit to allow for bouncyness on power down 824 * (recall that we don't wait above for a power down, since we don't 825 * get an interrupt for that). We're called either from the suspend 826 * code in which case we don't want to turn card change on again, or 827 * we're called from the card insertion code, in which case the cbb 828 * thread will turn it on for us before it waits to be woken by a 829 * change event. 830 * 831 * NB: Topic95B doesn't set the power cycle bit. we assume that 832 * both it and the TOPIC95 behave the same. 833 */ 834 cbb_clrb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_POWER); 835 status = cbb_get(sc, CBB_SOCKET_STATE); 836 if (on && sc->chipset != CB_TOPIC95) { 837 if ((status & CBB_STATE_POWER_CYCLE) == 0) 838 device_printf(sc->dev, "Power not on?\n"); 839 } 840 if (status & CBB_STATE_BAD_VCC_REQ) { 841 device_printf(sc->dev, "Bad Vcc requested\n"); 842 /* 843 * Turn off the power, and try again. Retrigger other 844 * active interrupts via force register. From NetBSD 845 * PR 36652, coded by me to description there. 846 */ 847 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK; 848 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK; 849 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl); 850 status &= ~CBB_STATE_BAD_VCC_REQ; 851 status &= ~CBB_STATE_DATA_LOST; 852 status |= CBB_FORCE_CV_TEST; 853 cbb_set(sc, CBB_SOCKET_FORCE, status); 854 goto done; 855 } 856 if (sc->chipset == CB_TOPIC97) { 857 reg_ctrl = pci_read_config(sc->dev, TOPIC_REG_CTRL, 4); 858 reg_ctrl &= ~TOPIC97_REG_CTRL_TESTMODE; 859 if (on) 860 reg_ctrl |= TOPIC97_REG_CTRL_CLKRUN_ENA; 861 else 862 reg_ctrl &= ~TOPIC97_REG_CTRL_CLKRUN_ENA; 863 pci_write_config(sc->dev, TOPIC_REG_CTRL, reg_ctrl, 4); 864 } 865 retval = 1; 866 done:; 867 if (volts != 0 && sc->chipset == CB_O2MICRO) 868 cbb_o2micro_power_hack2(sc, reg); 869 return (retval); 870 } 871 872 static int 873 cbb_current_voltage(device_t brdev) 874 { 875 struct cbb_softc *sc = device_get_softc(brdev); 876 uint32_t ctrl; 877 878 ctrl = cbb_get(sc, CBB_SOCKET_CONTROL); 879 switch (ctrl & CBB_SOCKET_CTRL_VCCMASK) { 880 case CBB_SOCKET_CTRL_VCC_5V: 881 return CARD_5V_CARD; 882 case CBB_SOCKET_CTRL_VCC_3V: 883 return CARD_3V_CARD; 884 case CBB_SOCKET_CTRL_VCC_XV: 885 return CARD_XV_CARD; 886 case CBB_SOCKET_CTRL_VCC_YV: 887 return CARD_YV_CARD; 888 } 889 return 0; 890 } 891 892 /* 893 * detect the voltage for the card, and set it. Since the power 894 * used is the square of the voltage, lower voltages is a big win 895 * and what Windows does (and what Microsoft prefers). The MS paper 896 * also talks about preferring the CIS entry as well, but that has 897 * to be done elsewhere. We also optimize power sequencing here 898 * and don't change things if we're already powered up at a supported 899 * voltage. 900 * 901 * In addition, we power up with OE disabled. We'll set it later 902 * in the power up sequence. 903 */ 904 static int 905 cbb_do_power(device_t brdev) 906 { 907 struct cbb_softc *sc = device_get_softc(brdev); 908 uint32_t voltage, curpwr; 909 uint32_t status; 910 911 /* Don't enable OE (output enable) until power stable */ 912 exca_clrb(&sc->exca, EXCA_PWRCTL, EXCA_PWRCTL_OE); 913 914 voltage = cbb_detect_voltage(brdev); 915 curpwr = cbb_current_voltage(brdev); 916 status = cbb_get(sc, CBB_SOCKET_STATE); 917 if ((status & CBB_STATE_POWER_CYCLE) && (voltage & curpwr)) 918 return 0; 919 /* Prefer lowest voltage supported */ 920 cbb_power(brdev, CARD_OFF); 921 if (voltage & CARD_YV_CARD) 922 cbb_power(brdev, CARD_VCC(YV)); 923 else if (voltage & CARD_XV_CARD) 924 cbb_power(brdev, CARD_VCC(XV)); 925 else if (voltage & CARD_3V_CARD) 926 cbb_power(brdev, CARD_VCC(3)); 927 else if (voltage & CARD_5V_CARD) 928 cbb_power(brdev, CARD_VCC(5)); 929 else { 930 device_printf(brdev, "Unknown card voltage\n"); 931 return (ENXIO); 932 } 933 return (0); 934 } 935 936 /************************************************************************/ 937 /* CardBus power functions */ 938 /************************************************************************/ 939 940 static int 941 cbb_cardbus_reset_power(device_t brdev, device_t child, int on) 942 { 943 struct cbb_softc *sc = device_get_softc(brdev); 944 uint32_t b, h; 945 int delay, count, zero_seen, func; 946 947 /* 948 * Asserting reset for 20ms is necessary for most bridges. For some 949 * reason, the Ricoh RF5C47x bridges need it asserted for 400ms. The 950 * root cause of this is unknown, and NetBSD does the same thing. 951 */ 952 delay = sc->chipset == CB_RF5C47X ? 400 : 20; 953 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2); 954 pause("cbbP3", hz * delay / 1000); 955 956 /* 957 * If a card exists and we're turning it on, take it out of reset. 958 * After clearing reset, wait up to 1.1s for the first configuration 959 * register (vendor/product) configuration register of device 0.0 to 960 * become != 0xffffffff. The PCMCIA PC Card Host System Specification 961 * says that when powering up the card, the PCI Spec v2.1 must be 962 * followed. In PCI spec v2.2 Table 4-6, Trhfa (Reset High to first 963 * Config Access) is at most 2^25 clocks, or just over 1s. Section 964 * 2.2.1 states any card not ready to participate in bus transactions 965 * must tristate its outputs. Therefore, any access to its 966 * configuration registers must be ignored. In that state, the config 967 * reg will read 0xffffffff. Section 6.2.1 states a vendor id of 968 * 0xffff is invalid, so this can never match a real card. Print a 969 * warning if it never returns a real id. The PCMCIA PC Card 970 * Electrical Spec Section 5.2.7.1 implies only device 0 is present on 971 * a cardbus bus, so that's the only register we check here. 972 */ 973 if (on && CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 974 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, 975 &~CBBM_BRIDGECTRL_RESET, 2); 976 b = pcib_get_bus(child); 977 count = 1100 / 20; 978 do { 979 pause("cbbP4", hz * 2 / 100); 980 } while (PCIB_READ_CONFIG(brdev, b, 0, 0, PCIR_DEVVENDOR, 4) == 981 0xfffffffful && --count >= 0); 982 if (count < 0) 983 device_printf(brdev, "Warning: Bus reset timeout\n"); 984 985 /* 986 * Some cards (so far just an atheros card I have) seem to 987 * come out of reset in a funky state. They report they are 988 * multi-function cards, but have nonsense for some of the 989 * higher functions. So if the card claims to be MFDEV, and 990 * any of the higher functions' ID is 0, then we've hit the 991 * bug and we'll try again. 992 */ 993 h = PCIB_READ_CONFIG(brdev, b, 0, 0, PCIR_HDRTYPE, 1); 994 if ((h & PCIM_MFDEV) == 0) 995 return 0; 996 zero_seen = 0; 997 for (func = 1; func < 8; func++) { 998 h = PCIB_READ_CONFIG(brdev, b, 0, func, 999 PCIR_DEVVENDOR, 4); 1000 if (h == 0) 1001 zero_seen++; 1002 } 1003 if (!zero_seen) 1004 return 0; 1005 return (EINVAL); 1006 } 1007 return 0; 1008 } 1009 1010 static int 1011 cbb_cardbus_power_disable_socket(device_t brdev, device_t child) 1012 { 1013 cbb_power(brdev, CARD_OFF); 1014 cbb_cardbus_reset_power(brdev, child, 0); 1015 return (0); 1016 } 1017 1018 static int 1019 cbb_cardbus_power_enable_socket(device_t brdev, device_t child) 1020 { 1021 struct cbb_softc *sc = device_get_softc(brdev); 1022 int err, count; 1023 1024 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) 1025 return (ENODEV); 1026 1027 count = 10; 1028 do { 1029 err = cbb_do_power(brdev); 1030 if (err) 1031 return (err); 1032 err = cbb_cardbus_reset_power(brdev, child, 1); 1033 if (err) { 1034 device_printf(brdev, "Reset failed, trying again.\n"); 1035 cbb_cardbus_power_disable_socket(brdev, child); 1036 pause("cbbErr1", hz / 10); /* wait 100ms */ 1037 } 1038 } while (err != 0 && count-- > 0); 1039 return (0); 1040 } 1041 1042 /************************************************************************/ 1043 /* CardBus Resource */ 1044 /************************************************************************/ 1045 1046 static void 1047 cbb_activate_window(device_t brdev, int type) 1048 { 1049 1050 PCI_ENABLE_IO(device_get_parent(brdev), brdev, type); 1051 } 1052 1053 static int 1054 cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end) 1055 { 1056 int basereg; 1057 int limitreg; 1058 1059 if ((win < 0) || (win > 1)) { 1060 DEVPRINTF((brdev, 1061 "cbb_cardbus_io_open: window out of range %d\n", win)); 1062 return (EINVAL); 1063 } 1064 1065 basereg = win * 8 + CBBR_IOBASE0; 1066 limitreg = win * 8 + CBBR_IOLIMIT0; 1067 1068 pci_write_config(brdev, basereg, start, 4); 1069 pci_write_config(brdev, limitreg, end, 4); 1070 cbb_activate_window(brdev, SYS_RES_IOPORT); 1071 return (0); 1072 } 1073 1074 static int 1075 cbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end) 1076 { 1077 int basereg; 1078 int limitreg; 1079 1080 if ((win < 0) || (win > 1)) { 1081 DEVPRINTF((brdev, 1082 "cbb_cardbus_mem_open: window out of range %d\n", win)); 1083 return (EINVAL); 1084 } 1085 1086 basereg = win * 8 + CBBR_MEMBASE0; 1087 limitreg = win * 8 + CBBR_MEMLIMIT0; 1088 1089 pci_write_config(brdev, basereg, start, 4); 1090 pci_write_config(brdev, limitreg, end, 4); 1091 cbb_activate_window(brdev, SYS_RES_MEMORY); 1092 return (0); 1093 } 1094 1095 #define START_NONE 0xffffffff 1096 #define END_NONE 0 1097 1098 static void 1099 cbb_cardbus_auto_open(struct cbb_softc *sc, int type) 1100 { 1101 uint32_t starts[2]; 1102 uint32_t ends[2]; 1103 struct cbb_reslist *rle; 1104 int align, i; 1105 uint32_t reg; 1106 1107 starts[0] = starts[1] = START_NONE; 1108 ends[0] = ends[1] = END_NONE; 1109 1110 if (type == SYS_RES_MEMORY) 1111 align = CBB_MEMALIGN; 1112 else if (type == SYS_RES_IOPORT) 1113 align = CBB_IOALIGN; 1114 else 1115 align = 1; 1116 1117 SLIST_FOREACH(rle, &sc->rl, link) { 1118 if (rle->type != type) 1119 continue; 1120 if (rle->res == NULL) 1121 continue; 1122 if (!(rman_get_flags(rle->res) & RF_ACTIVE)) 1123 continue; 1124 if (rman_get_flags(rle->res) & RF_PREFETCHABLE) 1125 i = 1; 1126 else 1127 i = 0; 1128 if (rman_get_start(rle->res) < starts[i]) 1129 starts[i] = rman_get_start(rle->res); 1130 if (rman_get_end(rle->res) > ends[i]) 1131 ends[i] = rman_get_end(rle->res); 1132 } 1133 for (i = 0; i < 2; i++) { 1134 if (starts[i] == START_NONE) 1135 continue; 1136 starts[i] &= ~(align - 1); 1137 ends[i] = roundup2(ends[i], align) - 1; 1138 } 1139 if (starts[0] != START_NONE && starts[1] != START_NONE) { 1140 if (starts[0] < starts[1]) { 1141 if (ends[0] > starts[1]) { 1142 device_printf(sc->dev, "Overlapping ranges" 1143 " for prefetch and non-prefetch memory\n"); 1144 return; 1145 } 1146 } else { 1147 if (ends[1] > starts[0]) { 1148 device_printf(sc->dev, "Overlapping ranges" 1149 " for prefetch and non-prefetch memory\n"); 1150 return; 1151 } 1152 } 1153 } 1154 1155 if (type == SYS_RES_MEMORY) { 1156 cbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]); 1157 cbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]); 1158 reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2); 1159 reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0 | 1160 CBBM_BRIDGECTRL_PREFETCH_1); 1161 if (starts[1] != START_NONE) 1162 reg |= CBBM_BRIDGECTRL_PREFETCH_1; 1163 pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2); 1164 if (bootverbose) { 1165 device_printf(sc->dev, "Opening memory:\n"); 1166 if (starts[0] != START_NONE) 1167 device_printf(sc->dev, "Normal: %#x-%#x\n", 1168 starts[0], ends[0]); 1169 if (starts[1] != START_NONE) 1170 device_printf(sc->dev, "Prefetch: %#x-%#x\n", 1171 starts[1], ends[1]); 1172 } 1173 } else if (type == SYS_RES_IOPORT) { 1174 cbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]); 1175 cbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]); 1176 if (bootverbose && starts[0] != START_NONE) 1177 device_printf(sc->dev, "Opening I/O: %#x-%#x\n", 1178 starts[0], ends[0]); 1179 } 1180 } 1181 1182 static int 1183 cbb_cardbus_activate_resource(device_t brdev, device_t child, int type, 1184 int rid, struct resource *res) 1185 { 1186 int ret; 1187 1188 ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child, 1189 type, rid, res); 1190 if (ret != 0) 1191 return (ret); 1192 cbb_cardbus_auto_open(device_get_softc(brdev), type); 1193 return (0); 1194 } 1195 1196 static int 1197 cbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type, 1198 int rid, struct resource *res) 1199 { 1200 int ret; 1201 1202 ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child, 1203 type, rid, res); 1204 if (ret != 0) 1205 return (ret); 1206 cbb_cardbus_auto_open(device_get_softc(brdev), type); 1207 return (0); 1208 } 1209 1210 static struct resource * 1211 cbb_cardbus_alloc_resource(device_t brdev, device_t child, int type, 1212 int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1213 { 1214 struct cbb_softc *sc = device_get_softc(brdev); 1215 int tmp; 1216 struct resource *res; 1217 rman_res_t align; 1218 1219 switch (type) { 1220 case SYS_RES_IRQ: 1221 tmp = rman_get_start(sc->irq_res); 1222 if (start > tmp || end < tmp || count != 1) { 1223 device_printf(child, "requested interrupt %jd-%jd," 1224 "count = %jd not supported by cbb\n", 1225 start, end, count); 1226 return (NULL); 1227 } 1228 start = end = tmp; 1229 flags |= RF_SHAREABLE; 1230 break; 1231 case SYS_RES_IOPORT: 1232 if (start <= cbb_start_32_io) 1233 start = cbb_start_32_io; 1234 if (end < start) 1235 end = start; 1236 if (count > (1 << RF_ALIGNMENT(flags))) 1237 flags = (flags & ~RF_ALIGNMENT_MASK) | 1238 rman_make_alignment_flags(count); 1239 break; 1240 case SYS_RES_MEMORY: 1241 if (start <= cbb_start_mem) 1242 start = cbb_start_mem; 1243 if (end < start) 1244 end = start; 1245 if (count < CBB_MEMALIGN) 1246 align = CBB_MEMALIGN; 1247 else 1248 align = count; 1249 if (align > (1 << RF_ALIGNMENT(flags))) 1250 flags = (flags & ~RF_ALIGNMENT_MASK) | 1251 rman_make_alignment_flags(align); 1252 break; 1253 } 1254 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid, 1255 start, end, count, flags & ~RF_ACTIVE); 1256 if (res == NULL) { 1257 printf("cbb alloc res fail type %d rid %x\n", type, *rid); 1258 return (NULL); 1259 } 1260 cbb_insert_res(sc, res, type, *rid); 1261 if (flags & RF_ACTIVE) 1262 if (bus_activate_resource(child, type, *rid, res) != 0) { 1263 bus_release_resource(child, type, *rid, res); 1264 return (NULL); 1265 } 1266 1267 return (res); 1268 } 1269 1270 static int 1271 cbb_cardbus_release_resource(device_t brdev, device_t child, int type, 1272 int rid, struct resource *res) 1273 { 1274 struct cbb_softc *sc = device_get_softc(brdev); 1275 int error; 1276 1277 if (rman_get_flags(res) & RF_ACTIVE) { 1278 error = bus_deactivate_resource(child, type, rid, res); 1279 if (error != 0) 1280 return (error); 1281 } 1282 cbb_remove_res(sc, res); 1283 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 1284 type, rid, res)); 1285 } 1286 1287 /************************************************************************/ 1288 /* PC Card Power Functions */ 1289 /************************************************************************/ 1290 1291 static int 1292 cbb_pcic_power_enable_socket(device_t brdev, device_t child) 1293 { 1294 struct cbb_softc *sc = device_get_softc(brdev); 1295 int err; 1296 1297 DPRINTF(("cbb_pcic_socket_enable:\n")); 1298 1299 /* power down/up the socket to reset */ 1300 err = cbb_do_power(brdev); 1301 if (err) 1302 return (err); 1303 exca_reset(&sc->exca, child); 1304 1305 return (0); 1306 } 1307 1308 static int 1309 cbb_pcic_power_disable_socket(device_t brdev, device_t child) 1310 { 1311 struct cbb_softc *sc = device_get_softc(brdev); 1312 1313 DPRINTF(("cbb_pcic_socket_disable\n")); 1314 1315 /* Turn off the card's interrupt and leave it in reset, wait 10ms */ 1316 exca_putb(&sc->exca, EXCA_INTR, 0); 1317 pause("cbbP1", hz / 100); 1318 1319 /* power down the socket */ 1320 cbb_power(brdev, CARD_OFF); 1321 exca_putb(&sc->exca, EXCA_PWRCTL, 0); 1322 1323 /* wait 300ms until power fails (Tpf). */ 1324 pause("cbbP2", hz * 300 / 1000); 1325 1326 /* enable CSC interrupts */ 1327 exca_putb(&sc->exca, EXCA_INTR, EXCA_INTR_ENABLE); 1328 return (0); 1329 } 1330 1331 /************************************************************************/ 1332 /* POWER methods */ 1333 /************************************************************************/ 1334 1335 int 1336 cbb_power_enable_socket(device_t brdev, device_t child) 1337 { 1338 struct cbb_softc *sc = device_get_softc(brdev); 1339 1340 if (sc->flags & CBB_16BIT_CARD) 1341 return (cbb_pcic_power_enable_socket(brdev, child)); 1342 return (cbb_cardbus_power_enable_socket(brdev, child)); 1343 } 1344 1345 int 1346 cbb_power_disable_socket(device_t brdev, device_t child) 1347 { 1348 struct cbb_softc *sc = device_get_softc(brdev); 1349 if (sc->flags & CBB_16BIT_CARD) 1350 return (cbb_pcic_power_disable_socket(brdev, child)); 1351 return (cbb_cardbus_power_disable_socket(brdev, child)); 1352 } 1353 1354 static int 1355 cbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid, 1356 struct resource *res) 1357 { 1358 struct cbb_softc *sc = device_get_softc(brdev); 1359 int error; 1360 1361 error = exca_activate_resource(&sc->exca, child, type, rid, res); 1362 if (error == 0) 1363 cbb_activate_window(brdev, type); 1364 return (error); 1365 } 1366 1367 static int 1368 cbb_pcic_deactivate_resource(device_t brdev, device_t child, int type, 1369 int rid, struct resource *res) 1370 { 1371 struct cbb_softc *sc = device_get_softc(brdev); 1372 return (exca_deactivate_resource(&sc->exca, child, type, rid, res)); 1373 } 1374 1375 static struct resource * 1376 cbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid, 1377 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1378 { 1379 struct resource *res = NULL; 1380 struct cbb_softc *sc = device_get_softc(brdev); 1381 int align; 1382 int tmp; 1383 1384 switch (type) { 1385 case SYS_RES_MEMORY: 1386 if (start < cbb_start_mem) 1387 start = cbb_start_mem; 1388 if (end < start) 1389 end = start; 1390 if (count < CBB_MEMALIGN) 1391 align = CBB_MEMALIGN; 1392 else 1393 align = count; 1394 if (align > (1 << RF_ALIGNMENT(flags))) 1395 flags = (flags & ~RF_ALIGNMENT_MASK) | 1396 rman_make_alignment_flags(align); 1397 break; 1398 case SYS_RES_IOPORT: 1399 if (start < cbb_start_16_io) 1400 start = cbb_start_16_io; 1401 if (end < start) 1402 end = start; 1403 break; 1404 case SYS_RES_IRQ: 1405 tmp = rman_get_start(sc->irq_res); 1406 if (start > tmp || end < tmp || count != 1) { 1407 device_printf(child, "requested interrupt %jd-%jd," 1408 "count = %jd not supported by cbb\n", 1409 start, end, count); 1410 return (NULL); 1411 } 1412 flags |= RF_SHAREABLE; 1413 start = end = rman_get_start(sc->irq_res); 1414 break; 1415 } 1416 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid, 1417 start, end, count, flags & ~RF_ACTIVE); 1418 if (res == NULL) 1419 return (NULL); 1420 cbb_insert_res(sc, res, type, *rid); 1421 if (flags & RF_ACTIVE) { 1422 if (bus_activate_resource(child, type, *rid, res) != 0) { 1423 bus_release_resource(child, type, *rid, res); 1424 return (NULL); 1425 } 1426 } 1427 1428 return (res); 1429 } 1430 1431 static int 1432 cbb_pcic_release_resource(device_t brdev, device_t child, int type, 1433 int rid, struct resource *res) 1434 { 1435 struct cbb_softc *sc = device_get_softc(brdev); 1436 int error; 1437 1438 if (rman_get_flags(res) & RF_ACTIVE) { 1439 error = bus_deactivate_resource(child, type, rid, res); 1440 if (error != 0) 1441 return (error); 1442 } 1443 cbb_remove_res(sc, res); 1444 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 1445 type, rid, res)); 1446 } 1447 1448 /************************************************************************/ 1449 /* PC Card methods */ 1450 /************************************************************************/ 1451 1452 int 1453 cbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid, 1454 u_long flags) 1455 { 1456 struct cbb_softc *sc = device_get_softc(brdev); 1457 struct resource *res; 1458 1459 if (type != SYS_RES_MEMORY) 1460 return (EINVAL); 1461 res = cbb_find_res(sc, type, rid); 1462 if (res == NULL) { 1463 device_printf(brdev, 1464 "set_res_flags: specified rid not found\n"); 1465 return (ENOENT); 1466 } 1467 return (exca_mem_set_flags(&sc->exca, res, flags)); 1468 } 1469 1470 int 1471 cbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid, 1472 uint32_t cardaddr, uint32_t *deltap) 1473 { 1474 struct cbb_softc *sc = device_get_softc(brdev); 1475 struct resource *res; 1476 1477 res = cbb_find_res(sc, SYS_RES_MEMORY, rid); 1478 if (res == NULL) { 1479 device_printf(brdev, 1480 "set_memory_offset: specified rid not found\n"); 1481 return (ENOENT); 1482 } 1483 return (exca_mem_set_offset(&sc->exca, res, cardaddr, deltap)); 1484 } 1485 1486 /************************************************************************/ 1487 /* BUS Methods */ 1488 /************************************************************************/ 1489 1490 int 1491 cbb_activate_resource(device_t brdev, device_t child, int type, int rid, 1492 struct resource *r) 1493 { 1494 struct cbb_softc *sc = device_get_softc(brdev); 1495 1496 if (sc->flags & CBB_16BIT_CARD) 1497 return (cbb_pcic_activate_resource(brdev, child, type, rid, r)); 1498 else 1499 return (cbb_cardbus_activate_resource(brdev, child, type, rid, 1500 r)); 1501 } 1502 1503 int 1504 cbb_deactivate_resource(device_t brdev, device_t child, int type, 1505 int rid, struct resource *r) 1506 { 1507 struct cbb_softc *sc = device_get_softc(brdev); 1508 1509 if (sc->flags & CBB_16BIT_CARD) 1510 return (cbb_pcic_deactivate_resource(brdev, child, type, 1511 rid, r)); 1512 else 1513 return (cbb_cardbus_deactivate_resource(brdev, child, type, 1514 rid, r)); 1515 } 1516 1517 struct resource * 1518 cbb_alloc_resource(device_t brdev, device_t child, int type, int *rid, 1519 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1520 { 1521 struct cbb_softc *sc = device_get_softc(brdev); 1522 1523 if (sc->flags & CBB_16BIT_CARD) 1524 return (cbb_pcic_alloc_resource(brdev, child, type, rid, 1525 start, end, count, flags)); 1526 else 1527 return (cbb_cardbus_alloc_resource(brdev, child, type, rid, 1528 start, end, count, flags)); 1529 } 1530 1531 int 1532 cbb_release_resource(device_t brdev, device_t child, int type, int rid, 1533 struct resource *r) 1534 { 1535 struct cbb_softc *sc = device_get_softc(brdev); 1536 1537 if (sc->flags & CBB_16BIT_CARD) 1538 return (cbb_pcic_release_resource(brdev, child, type, 1539 rid, r)); 1540 else 1541 return (cbb_cardbus_release_resource(brdev, child, type, 1542 rid, r)); 1543 } 1544 1545 int 1546 cbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result) 1547 { 1548 struct cbb_softc *sc = device_get_softc(brdev); 1549 1550 switch (which) { 1551 case PCIB_IVAR_DOMAIN: 1552 *result = sc->domain; 1553 return (0); 1554 case PCIB_IVAR_BUS: 1555 *result = sc->bus.sec; 1556 return (0); 1557 case EXCA_IVAR_SLOT: 1558 *result = 0; 1559 return (0); 1560 } 1561 return (ENOENT); 1562 } 1563 1564 int 1565 cbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value) 1566 { 1567 1568 switch (which) { 1569 case PCIB_IVAR_DOMAIN: 1570 return (EINVAL); 1571 case PCIB_IVAR_BUS: 1572 return (EINVAL); 1573 case EXCA_IVAR_SLOT: 1574 return (EINVAL); 1575 } 1576 return (ENOENT); 1577 } 1578 1579 int 1580 cbb_child_present(device_t parent, device_t child) 1581 { 1582 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(parent); 1583 uint32_t sockstate; 1584 1585 sockstate = cbb_get(sc, CBB_SOCKET_STATE); 1586 return (CBB_CARD_PRESENT(sockstate) && sc->cardok); 1587 } 1588