Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/pccbb/pccbb.c
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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 /* sysctl vars */ 128 static SYSCTL_NODE(_hw, OID_AUTO, cbb, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 129 "CBB parameters"); 130 131 /* There's no way to say TUNEABLE_LONG to get the right types */ 132 u_long cbb_start_mem = CBB_START_MEM; 133 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_memory, CTLFLAG_RWTUN, 134 &cbb_start_mem, CBB_START_MEM, 135 "Starting address for memory allocations"); 136 137 u_long cbb_start_16_io = CBB_START_16_IO; 138 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_16_io, CTLFLAG_RWTUN, 139 &cbb_start_16_io, CBB_START_16_IO, 140 "Starting ioport for 16-bit cards"); 141 142 u_long cbb_start_32_io = CBB_START_32_IO; 143 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_32_io, CTLFLAG_RWTUN, 144 &cbb_start_32_io, CBB_START_32_IO, 145 "Starting ioport for 32-bit cards"); 146 147 int cbb_debug = 0; 148 SYSCTL_INT(_hw_cbb, OID_AUTO, debug, CTLFLAG_RWTUN, &cbb_debug, 0, 149 "Verbose cardbus bridge debugging"); 150 151 static void cbb_insert(struct cbb_softc *sc); 152 static void cbb_removal(struct cbb_softc *sc); 153 static uint32_t cbb_detect_voltage(device_t brdev); 154 static int cbb_cardbus_reset_power(device_t brdev, device_t child, int on); 155 static int cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, 156 uint32_t end); 157 static int cbb_cardbus_mem_open(device_t brdev, int win, 158 uint32_t start, uint32_t end); 159 static void cbb_cardbus_auto_open(struct cbb_softc *sc, int type); 160 static int cbb_cardbus_activate_resource(device_t brdev, device_t child, 161 int type, int rid, struct resource *res); 162 static int cbb_cardbus_deactivate_resource(device_t brdev, 163 device_t child, int type, int rid, struct resource *res); 164 static struct resource *cbb_cardbus_alloc_resource(device_t brdev, 165 device_t child, int type, int *rid, rman_res_t start, 166 rman_res_t end, rman_res_t count, u_int flags); 167 static int cbb_cardbus_release_resource(device_t brdev, device_t child, 168 int type, int rid, struct resource *res); 169 static int cbb_cardbus_power_enable_socket(device_t brdev, 170 device_t child); 171 static int cbb_cardbus_power_disable_socket(device_t brdev, 172 device_t child); 173 static int cbb_func_filt(void *arg); 174 static void cbb_func_intr(void *arg); 175 176 static void 177 cbb_remove_res(struct cbb_softc *sc, struct resource *res) 178 { 179 struct cbb_reslist *rle; 180 181 SLIST_FOREACH(rle, &sc->rl, link) { 182 if (rle->res == res) { 183 SLIST_REMOVE(&sc->rl, rle, cbb_reslist, link); 184 free(rle, M_DEVBUF); 185 return; 186 } 187 } 188 } 189 190 static struct resource * 191 cbb_find_res(struct cbb_softc *sc, int type, int rid) 192 { 193 struct cbb_reslist *rle; 194 195 SLIST_FOREACH(rle, &sc->rl, link) 196 if (SYS_RES_MEMORY == rle->type && rid == rle->rid) 197 return (rle->res); 198 return (NULL); 199 } 200 201 static void 202 cbb_insert_res(struct cbb_softc *sc, struct resource *res, int type, 203 int rid) 204 { 205 struct cbb_reslist *rle; 206 207 /* 208 * Need to record allocated resource so we can iterate through 209 * it later. 210 */ 211 rle = malloc(sizeof(struct cbb_reslist), M_DEVBUF, M_NOWAIT); 212 if (rle == NULL) 213 panic("cbb_cardbus_alloc_resource: can't record entry!"); 214 rle->res = res; 215 rle->type = type; 216 rle->rid = rid; 217 SLIST_INSERT_HEAD(&sc->rl, rle, link); 218 } 219 220 static void 221 cbb_destroy_res(struct cbb_softc *sc) 222 { 223 struct cbb_reslist *rle; 224 225 while ((rle = SLIST_FIRST(&sc->rl)) != NULL) { 226 device_printf(sc->dev, "Danger Will Robinson: Resource " 227 "left allocated! This is a bug... " 228 "(rid=%x, type=%d, addr=%jx)\n", rle->rid, rle->type, 229 rman_get_start(rle->res)); 230 SLIST_REMOVE_HEAD(&sc->rl, link); 231 free(rle, M_DEVBUF); 232 } 233 } 234 235 /* 236 * Disable function interrupts by telling the bridge to generate IRQ1 237 * interrupts. These interrupts aren't really generated by the chip, since 238 * IRQ1 is reserved. Some chipsets assert INTA# inappropriately during 239 * initialization, so this helps to work around the problem. 240 * 241 * XXX We can't do this workaround for all chipsets, because this 242 * XXX causes interference with the keyboard because somechipsets will 243 * XXX actually signal IRQ1 over their serial interrupt connections to 244 * XXX the south bridge. Disable it it for now. 245 */ 246 void 247 cbb_disable_func_intr(struct cbb_softc *sc) 248 { 249 #if 0 250 uint8_t reg; 251 252 reg = (exca_getb(&sc->exca, EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) | 253 EXCA_INTR_IRQ_RESERVED1; 254 exca_putb(&sc->exca, EXCA_INTR, reg); 255 #endif 256 } 257 258 /* 259 * Enable function interrupts. We turn on function interrupts when the card 260 * requests an interrupt. The PCMCIA standard says that we should set 261 * the lower 4 bits to 0 to route via PCI. Note: we call this for both 262 * CardBus and R2 (PC Card) cases, but it should have no effect on CardBus 263 * cards. 264 */ 265 static void 266 cbb_enable_func_intr(struct cbb_softc *sc) 267 { 268 uint8_t reg; 269 270 reg = (exca_getb(&sc->exca, EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) | 271 EXCA_INTR_IRQ_NONE; 272 PCI_MASK_CONFIG(sc->dev, CBBR_BRIDGECTRL, 273 & ~CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2); 274 exca_putb(&sc->exca, EXCA_INTR, reg); 275 } 276 277 int 278 cbb_detach(device_t brdev) 279 { 280 struct cbb_softc *sc = device_get_softc(brdev); 281 device_t *devlist; 282 int tmp, tries, error, numdevs; 283 284 /* 285 * Before we delete the children (which we have to do because 286 * attach doesn't check for children busses correctly), we have 287 * to detach the children. Even if we didn't need to delete the 288 * children, we have to detach them. 289 */ 290 error = bus_generic_detach(brdev); 291 if (error != 0) 292 return (error); 293 294 /* 295 * Since the attach routine doesn't search for children before it 296 * attaches them to this device, we must delete them here in order 297 * for the kldload/unload case to work. If we failed to do that, then 298 * we'd get duplicate devices when cbb.ko was reloaded. 299 */ 300 tries = 10; 301 do { 302 error = device_get_children(brdev, &devlist, &numdevs); 303 if (error == 0) 304 break; 305 /* 306 * Try hard to cope with low memory. 307 */ 308 if (error == ENOMEM) { 309 pause("cbbnomem", 1); 310 continue; 311 } 312 } while (tries-- > 0); 313 for (tmp = 0; tmp < numdevs; tmp++) 314 device_delete_child(brdev, devlist[tmp]); 315 free(devlist, M_TEMP); 316 317 /* Turn off the interrupts */ 318 cbb_set(sc, CBB_SOCKET_MASK, 0); 319 320 /* reset 16-bit pcmcia bus */ 321 exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET); 322 323 /* turn off power */ 324 cbb_power(brdev, CARD_OFF); 325 326 /* Ack the interrupt */ 327 cbb_set(sc, CBB_SOCKET_EVENT, 0xffffffff); 328 329 /* 330 * Wait for the thread to die. kproc_exit will do a wakeup 331 * on the event thread's struct proc * so that we know it is 332 * safe to proceed. IF the thread is running, set the please 333 * die flag and wait for it to comply. Since the wakeup on 334 * the event thread happens only in kproc_exit, we don't 335 * need to loop here. 336 */ 337 bus_teardown_intr(brdev, sc->irq_res, sc->intrhand); 338 mtx_lock(&sc->mtx); 339 sc->flags |= CBB_KTHREAD_DONE; 340 while (sc->flags & CBB_KTHREAD_RUNNING) { 341 DEVPRINTF((sc->dev, "Waiting for thread to die\n")); 342 wakeup(&sc->intrhand); 343 msleep(sc->event_thread, &sc->mtx, PWAIT, "cbbun", 0); 344 } 345 mtx_unlock(&sc->mtx); 346 347 bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res); 348 bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE, 349 sc->base_res); 350 mtx_destroy(&sc->mtx); 351 return (0); 352 } 353 354 int 355 cbb_setup_intr(device_t dev, device_t child, struct resource *irq, 356 int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, 357 void **cookiep) 358 { 359 struct cbb_intrhand *ih; 360 struct cbb_softc *sc = device_get_softc(dev); 361 int err; 362 363 if (filt == NULL && intr == NULL) 364 return (EINVAL); 365 ih = malloc(sizeof(struct cbb_intrhand), M_DEVBUF, M_NOWAIT); 366 if (ih == NULL) 367 return (ENOMEM); 368 *cookiep = ih; 369 ih->filt = filt; 370 ih->intr = intr; 371 ih->arg = arg; 372 ih->sc = sc; 373 /* 374 * XXX need to turn on ISA interrupts, if we ever support them, but 375 * XXX for now that's all we need to do. 376 */ 377 err = BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags, 378 filt ? cbb_func_filt : NULL, intr ? cbb_func_intr : NULL, ih, 379 &ih->cookie); 380 if (err != 0) { 381 free(ih, M_DEVBUF); 382 return (err); 383 } 384 cbb_enable_func_intr(sc); 385 sc->cardok = 1; 386 return 0; 387 } 388 389 int 390 cbb_teardown_intr(device_t dev, device_t child, struct resource *irq, 391 void *cookie) 392 { 393 struct cbb_intrhand *ih; 394 int err; 395 396 /* XXX Need to do different things for ISA interrupts. */ 397 ih = (struct cbb_intrhand *) cookie; 398 err = BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq, 399 ih->cookie); 400 if (err != 0) 401 return (err); 402 free(ih, M_DEVBUF); 403 return (0); 404 } 405 406 void 407 cbb_driver_added(device_t brdev, driver_t *driver) 408 { 409 struct cbb_softc *sc = device_get_softc(brdev); 410 device_t *devlist; 411 device_t dev; 412 int tmp; 413 int numdevs; 414 int wake = 0; 415 416 DEVICE_IDENTIFY(driver, brdev); 417 tmp = device_get_children(brdev, &devlist, &numdevs); 418 if (tmp != 0) { 419 device_printf(brdev, "Cannot get children list, no reprobe\n"); 420 return; 421 } 422 for (tmp = 0; tmp < numdevs; tmp++) { 423 dev = devlist[tmp]; 424 if (device_get_state(dev) == DS_NOTPRESENT && 425 device_probe_and_attach(dev) == 0) 426 wake++; 427 } 428 free(devlist, M_TEMP); 429 430 if (wake > 0) 431 wakeup(&sc->intrhand); 432 } 433 434 void 435 cbb_child_detached(device_t brdev, device_t child) 436 { 437 struct cbb_softc *sc = device_get_softc(brdev); 438 439 /* I'm not sure we even need this */ 440 if (child != sc->cbdev && child != sc->exca.pccarddev) 441 device_printf(brdev, "Unknown child detached: %s\n", 442 device_get_nameunit(child)); 443 } 444 445 /************************************************************************/ 446 /* Kthreads */ 447 /************************************************************************/ 448 449 void 450 cbb_event_thread(void *arg) 451 { 452 struct cbb_softc *sc = arg; 453 uint32_t status; 454 int err; 455 int not_a_card = 0; 456 457 /* 458 * We need to act as a power sequencer on startup. Delay 2s/channel 459 * to ensure the other channels have had a chance to come up. We likely 460 * should add a lock that's shared on a per-slot basis so that only 461 * one power event can happen per slot at a time. 462 */ 463 pause("cbbstart", hz * device_get_unit(sc->dev) * 2); 464 mtx_lock(&sc->mtx); 465 sc->flags |= CBB_KTHREAD_RUNNING; 466 while ((sc->flags & CBB_KTHREAD_DONE) == 0) { 467 mtx_unlock(&sc->mtx); 468 status = cbb_get(sc, CBB_SOCKET_STATE); 469 DPRINTF(("Status is 0x%x\n", status)); 470 if (!CBB_CARD_PRESENT(status)) { 471 not_a_card = 0; /* We know card type */ 472 cbb_removal(sc); 473 } else if (status & CBB_STATE_NOT_A_CARD) { 474 /* 475 * Up to 10 times, try to rescan the card when we see 476 * NOT_A_CARD. 10 is somehwat arbitrary. When this 477 * pathology hits, there's a ~40% chance each try will 478 * fail. 10 tries takes about 5s and results in a 479 * 99.99% certainty of the results. 480 */ 481 if (not_a_card++ < 10) { 482 DEVPRINTF((sc->dev, 483 "Not a card bit set, rescanning\n")); 484 cbb_setb(sc, CBB_SOCKET_FORCE, CBB_FORCE_CV_TEST); 485 } else { 486 device_printf(sc->dev, 487 "Can't determine card type\n"); 488 } 489 } else { 490 not_a_card = 0; /* We know card type */ 491 cbb_insert(sc); 492 } 493 494 /* 495 * First time through we need to tell mountroot that we're 496 * done. 497 */ 498 if (sc->sc_root_token) { 499 root_mount_rel(sc->sc_root_token); 500 sc->sc_root_token = NULL; 501 } 502 503 /* 504 * Wait until it has been 250ms since the last time we 505 * get an interrupt. We handle the rest of the interrupt 506 * at the top of the loop. Although we clear the bit in the 507 * ISR, we signal sc->cv from the detach path after we've 508 * set the CBB_KTHREAD_DONE bit, so we can't do a simple 509 * 250ms sleep here. 510 * 511 * In our ISR, we turn off the card changed interrupt. Turn 512 * them back on here before we wait for them to happen. We 513 * turn them on/off so that we can tolerate a large latency 514 * between the time we signal cbb_event_thread and it gets 515 * a chance to run. 516 */ 517 mtx_lock(&sc->mtx); 518 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD | CBB_SOCKET_MASK_CSTS); 519 msleep(&sc->intrhand, &sc->mtx, 0, "-", 0); 520 err = 0; 521 while (err != EWOULDBLOCK && 522 (sc->flags & CBB_KTHREAD_DONE) == 0) 523 err = msleep(&sc->intrhand, &sc->mtx, 0, "-", hz / 5); 524 } 525 DEVPRINTF((sc->dev, "Thread terminating\n")); 526 sc->flags &= ~CBB_KTHREAD_RUNNING; 527 mtx_unlock(&sc->mtx); 528 kproc_exit(0); 529 } 530 531 /************************************************************************/ 532 /* Insert/removal */ 533 /************************************************************************/ 534 535 static void 536 cbb_insert(struct cbb_softc *sc) 537 { 538 uint32_t sockevent, sockstate; 539 540 sockevent = cbb_get(sc, CBB_SOCKET_EVENT); 541 sockstate = cbb_get(sc, CBB_SOCKET_STATE); 542 543 DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n", 544 sockevent, sockstate)); 545 546 if (sockstate & CBB_STATE_R2_CARD) { 547 if (device_is_attached(sc->exca.pccarddev)) { 548 sc->flags |= CBB_16BIT_CARD; 549 exca_insert(&sc->exca); 550 } else { 551 device_printf(sc->dev, 552 "16-bit card inserted, but no pccard bus.\n"); 553 } 554 } else if (sockstate & CBB_STATE_CB_CARD) { 555 if (device_is_attached(sc->cbdev)) { 556 sc->flags &= ~CBB_16BIT_CARD; 557 CARD_ATTACH_CARD(sc->cbdev); 558 } else { 559 device_printf(sc->dev, 560 "CardBus card inserted, but no cardbus bus.\n"); 561 } 562 } else { 563 /* 564 * We should power the card down, and try again a couple of 565 * times if this happens. XXX 566 */ 567 device_printf(sc->dev, "Unsupported card type detected\n"); 568 } 569 } 570 571 static void 572 cbb_removal(struct cbb_softc *sc) 573 { 574 sc->cardok = 0; 575 if (sc->flags & CBB_16BIT_CARD) { 576 exca_removal(&sc->exca); 577 } else { 578 if (device_is_attached(sc->cbdev)) 579 CARD_DETACH_CARD(sc->cbdev); 580 } 581 cbb_destroy_res(sc); 582 } 583 584 /************************************************************************/ 585 /* Interrupt Handler */ 586 /************************************************************************/ 587 588 static int 589 cbb_func_filt(void *arg) 590 { 591 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg; 592 struct cbb_softc *sc = ih->sc; 593 594 /* 595 * Make sure that the card is really there. 596 */ 597 if (!sc->cardok) 598 return (FILTER_STRAY); 599 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 600 sc->cardok = 0; 601 return (FILTER_HANDLED); 602 } 603 604 return ((*ih->filt)(ih->arg)); 605 } 606 607 static void 608 cbb_func_intr(void *arg) 609 { 610 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg; 611 struct cbb_softc *sc = ih->sc; 612 613 /* 614 * While this check may seem redundant, it helps close a race 615 * condition. If the card is ejected after the filter runs, but 616 * before this ISR can be scheduled, then we need to do the same 617 * filtering to prevent the card's ISR from being called. One could 618 * argue that the card's ISR should be able to cope, but experience 619 * has shown they can't always. This mitigates the problem by making 620 * the race quite a bit smaller. Properly written client ISRs should 621 * cope with the card going away in the middle of the ISR. We assume 622 * that drivers that are sophisticated enough to use filters don't 623 * need our protection. This also allows us to ensure they *ARE* 624 * called if their filter said they needed to be called. 625 */ 626 if (ih->filt == NULL) { 627 if (!sc->cardok) 628 return; 629 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 630 sc->cardok = 0; 631 return; 632 } 633 } 634 635 ih->intr(ih->arg); 636 } 637 638 /************************************************************************/ 639 /* Generic Power functions */ 640 /************************************************************************/ 641 642 static uint32_t 643 cbb_detect_voltage(device_t brdev) 644 { 645 struct cbb_softc *sc = device_get_softc(brdev); 646 uint32_t psr; 647 uint32_t vol = CARD_UKN_CARD; 648 649 psr = cbb_get(sc, CBB_SOCKET_STATE); 650 651 if (psr & CBB_STATE_5VCARD && psr & CBB_STATE_5VSOCK) 652 vol |= CARD_5V_CARD; 653 if (psr & CBB_STATE_3VCARD && psr & CBB_STATE_3VSOCK) 654 vol |= CARD_3V_CARD; 655 if (psr & CBB_STATE_XVCARD && psr & CBB_STATE_XVSOCK) 656 vol |= CARD_XV_CARD; 657 if (psr & CBB_STATE_YVCARD && psr & CBB_STATE_YVSOCK) 658 vol |= CARD_YV_CARD; 659 660 return (vol); 661 } 662 663 static uint8_t 664 cbb_o2micro_power_hack(struct cbb_softc *sc) 665 { 666 uint8_t reg; 667 668 /* 669 * Issue #2: INT# not qualified with IRQ Routing Bit. An 670 * unexpected PCI INT# may be generated during PC Card 671 * initialization even with the IRQ Routing Bit Set with some 672 * PC Cards. 673 * 674 * This is a two part issue. The first part is that some of 675 * our older controllers have an issue in which the slot's PCI 676 * INT# is NOT qualified by the IRQ routing bit (PCI reg. 3Eh 677 * bit 7). Regardless of the IRQ routing bit, if NO ISA IRQ 678 * is selected (ExCA register 03h bits 3:0, of the slot, are 679 * cleared) we will generate INT# if IREQ# is asserted. The 680 * second part is because some PC Cards prematurally assert 681 * IREQ# before the ExCA registers are fully programmed. This 682 * in turn asserts INT# because ExCA register 03h bits 3:0 683 * (ISA IRQ Select) are not yet programmed. 684 * 685 * The fix for this issue, which will work for any controller 686 * (old or new), is to set ExCA register 03h bits 3:0 = 0001b 687 * (select IRQ1), of the slot, before turning on slot power. 688 * Selecting IRQ1 will result in INT# NOT being asserted 689 * (because IRQ1 is selected), and IRQ1 won't be asserted 690 * because our controllers don't generate IRQ1. 691 * 692 * Other, non O2Micro controllers will generate irq 1 in some 693 * situations, so we can't do this hack for everybody. Reports of 694 * keyboard controller's interrupts being suppressed occurred when 695 * we did this. 696 */ 697 reg = exca_getb(&sc->exca, EXCA_INTR); 698 exca_putb(&sc->exca, EXCA_INTR, (reg & 0xf0) | 1); 699 return (reg); 700 } 701 702 /* 703 * Restore the damage that cbb_o2micro_power_hack does to EXCA_INTR so 704 * we don't have an interrupt storm on power on. This has the effect of 705 * disabling card status change interrupts for the duration of poweron. 706 */ 707 static void 708 cbb_o2micro_power_hack2(struct cbb_softc *sc, uint8_t reg) 709 { 710 exca_putb(&sc->exca, EXCA_INTR, reg); 711 } 712 713 int 714 cbb_power(device_t brdev, int volts) 715 { 716 uint32_t status, sock_ctrl, reg_ctrl, mask; 717 struct cbb_softc *sc = device_get_softc(brdev); 718 int cnt, sane; 719 int retval = 0; 720 int on = 0; 721 uint8_t reg = 0; 722 723 sock_ctrl = cbb_get(sc, CBB_SOCKET_CONTROL); 724 725 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK; 726 switch (volts & CARD_VCCMASK) { 727 case 5: 728 sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V; 729 on++; 730 break; 731 case 3: 732 sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V; 733 on++; 734 break; 735 case XV: 736 sock_ctrl |= CBB_SOCKET_CTRL_VCC_XV; 737 on++; 738 break; 739 case YV: 740 sock_ctrl |= CBB_SOCKET_CTRL_VCC_YV; 741 on++; 742 break; 743 case 0: 744 break; 745 default: 746 return (0); /* power NEVER changed */ 747 } 748 749 /* VPP == VCC */ 750 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK; 751 sock_ctrl |= ((sock_ctrl >> 4) & 0x07); 752 753 if (cbb_get(sc, CBB_SOCKET_CONTROL) == sock_ctrl) 754 return (1); /* no change necessary */ 755 DEVPRINTF((sc->dev, "cbb_power: %dV\n", volts)); 756 if (volts != 0 && sc->chipset == CB_O2MICRO) 757 reg = cbb_o2micro_power_hack(sc); 758 759 /* 760 * We have to mask the card change detect interrupt while we're 761 * messing with the power. It is allowed to bounce while we're 762 * messing with power as things settle down. In addition, we mask off 763 * the card's function interrupt by routing it via the ISA bus. This 764 * bit generally only affects 16-bit cards. Some bridges allow one to 765 * set another bit to have it also affect 32-bit cards. Since 32-bit 766 * cards are required to be better behaved, we don't bother to get 767 * into those bridge specific features. 768 * 769 * XXX I wonder if we need to enable the READY bit interrupt in the 770 * EXCA CSC register for 16-bit cards, and disable the CD bit? 771 */ 772 mask = cbb_get(sc, CBB_SOCKET_MASK); 773 mask |= CBB_SOCKET_MASK_POWER; 774 mask &= ~CBB_SOCKET_MASK_CD; 775 cbb_set(sc, CBB_SOCKET_MASK, mask); 776 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, 777 |CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2); 778 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl); 779 if (on) { 780 mtx_lock(&sc->mtx); 781 cnt = sc->powerintr; 782 /* 783 * We have a shortish timeout of 500ms here. Some bridges do 784 * not generate a POWER_CYCLE event for 16-bit cards. In 785 * those cases, we have to cope the best we can, and having 786 * only a short delay is better than the alternatives. Others 787 * raise the power cycle a smidge before it is really ready. 788 * We deal with those below. 789 */ 790 sane = 10; 791 while (!(cbb_get(sc, CBB_SOCKET_STATE) & CBB_STATE_POWER_CYCLE) && 792 cnt == sc->powerintr && sane-- > 0) 793 msleep(&sc->powerintr, &sc->mtx, 0, "-", hz / 20); 794 mtx_unlock(&sc->mtx); 795 796 /* 797 * Relax for 100ms. Some bridges appear to assert this signal 798 * right away, but before the card has stabilized. Other 799 * cards need need more time to cope up reliabily. 800 * Experiments with troublesome setups show this to be a 801 * "cheap" way to enhance reliabilty. We need not do this for 802 * "off" since we don't touch the card after we turn it off. 803 */ 804 pause("cbbPwr", min(hz / 10, 1)); 805 806 /* 807 * The TOPIC95B requires a little bit extra time to get its 808 * act together, so delay for an additional 100ms. Also as 809 * documented below, it doesn't seem to set the POWER_CYCLE 810 * bit, so don't whine if it never came on. 811 */ 812 if (sc->chipset == CB_TOPIC95) 813 pause("cbb95B", hz / 10); 814 else if (sane <= 0) 815 device_printf(sc->dev, "power timeout, doom?\n"); 816 } 817 818 /* 819 * After the power is good, we can turn off the power interrupt. 820 * However, the PC Card standard says that we must delay turning the 821 * CD bit back on for a bit to allow for bouncyness on power down 822 * (recall that we don't wait above for a power down, since we don't 823 * get an interrupt for that). We're called either from the suspend 824 * code in which case we don't want to turn card change on again, or 825 * we're called from the card insertion code, in which case the cbb 826 * thread will turn it on for us before it waits to be woken by a 827 * change event. 828 * 829 * NB: Topic95B doesn't set the power cycle bit. we assume that 830 * both it and the TOPIC95 behave the same. 831 */ 832 cbb_clrb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_POWER); 833 status = cbb_get(sc, CBB_SOCKET_STATE); 834 if (on && sc->chipset != CB_TOPIC95) { 835 if ((status & CBB_STATE_POWER_CYCLE) == 0) 836 device_printf(sc->dev, "Power not on?\n"); 837 } 838 if (status & CBB_STATE_BAD_VCC_REQ) { 839 device_printf(sc->dev, "Bad Vcc requested\n"); 840 /* 841 * Turn off the power, and try again. Retrigger other 842 * active interrupts via force register. From NetBSD 843 * PR 36652, coded by me to description there. 844 */ 845 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK; 846 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK; 847 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl); 848 status &= ~CBB_STATE_BAD_VCC_REQ; 849 status &= ~CBB_STATE_DATA_LOST; 850 status |= CBB_FORCE_CV_TEST; 851 cbb_set(sc, CBB_SOCKET_FORCE, status); 852 goto done; 853 } 854 if (sc->chipset == CB_TOPIC97) { 855 reg_ctrl = pci_read_config(sc->dev, TOPIC_REG_CTRL, 4); 856 reg_ctrl &= ~TOPIC97_REG_CTRL_TESTMODE; 857 if (on) 858 reg_ctrl |= TOPIC97_REG_CTRL_CLKRUN_ENA; 859 else 860 reg_ctrl &= ~TOPIC97_REG_CTRL_CLKRUN_ENA; 861 pci_write_config(sc->dev, TOPIC_REG_CTRL, reg_ctrl, 4); 862 } 863 retval = 1; 864 done:; 865 if (volts != 0 && sc->chipset == CB_O2MICRO) 866 cbb_o2micro_power_hack2(sc, reg); 867 return (retval); 868 } 869 870 static int 871 cbb_current_voltage(device_t brdev) 872 { 873 struct cbb_softc *sc = device_get_softc(brdev); 874 uint32_t ctrl; 875 876 ctrl = cbb_get(sc, CBB_SOCKET_CONTROL); 877 switch (ctrl & CBB_SOCKET_CTRL_VCCMASK) { 878 case CBB_SOCKET_CTRL_VCC_5V: 879 return CARD_5V_CARD; 880 case CBB_SOCKET_CTRL_VCC_3V: 881 return CARD_3V_CARD; 882 case CBB_SOCKET_CTRL_VCC_XV: 883 return CARD_XV_CARD; 884 case CBB_SOCKET_CTRL_VCC_YV: 885 return CARD_YV_CARD; 886 } 887 return 0; 888 } 889 890 /* 891 * detect the voltage for the card, and set it. Since the power 892 * used is the square of the voltage, lower voltages is a big win 893 * and what Windows does (and what Microsoft prefers). The MS paper 894 * also talks about preferring the CIS entry as well, but that has 895 * to be done elsewhere. We also optimize power sequencing here 896 * and don't change things if we're already powered up at a supported 897 * voltage. 898 * 899 * In addition, we power up with OE disabled. We'll set it later 900 * in the power up sequence. 901 */ 902 static int 903 cbb_do_power(device_t brdev) 904 { 905 struct cbb_softc *sc = device_get_softc(brdev); 906 uint32_t voltage, curpwr; 907 uint32_t status; 908 909 /* Don't enable OE (output enable) until power stable */ 910 exca_clrb(&sc->exca, EXCA_PWRCTL, EXCA_PWRCTL_OE); 911 912 voltage = cbb_detect_voltage(brdev); 913 curpwr = cbb_current_voltage(brdev); 914 status = cbb_get(sc, CBB_SOCKET_STATE); 915 if ((status & CBB_STATE_POWER_CYCLE) && (voltage & curpwr)) 916 return 0; 917 /* Prefer lowest voltage supported */ 918 cbb_power(brdev, CARD_OFF); 919 if (voltage & CARD_YV_CARD) 920 cbb_power(brdev, CARD_VCC(YV)); 921 else if (voltage & CARD_XV_CARD) 922 cbb_power(brdev, CARD_VCC(XV)); 923 else if (voltage & CARD_3V_CARD) 924 cbb_power(brdev, CARD_VCC(3)); 925 else if (voltage & CARD_5V_CARD) 926 cbb_power(brdev, CARD_VCC(5)); 927 else { 928 device_printf(brdev, "Unknown card voltage\n"); 929 return (ENXIO); 930 } 931 return (0); 932 } 933 934 /************************************************************************/ 935 /* CardBus power functions */ 936 /************************************************************************/ 937 938 static int 939 cbb_cardbus_reset_power(device_t brdev, device_t child, int on) 940 { 941 struct cbb_softc *sc = device_get_softc(brdev); 942 uint32_t b, h; 943 int delay, count, zero_seen, func; 944 945 /* 946 * Asserting reset for 20ms is necessary for most bridges. For some 947 * reason, the Ricoh RF5C47x bridges need it asserted for 400ms. The 948 * root cause of this is unknown, and NetBSD does the same thing. 949 */ 950 delay = sc->chipset == CB_RF5C47X ? 400 : 20; 951 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2); 952 pause("cbbP3", hz * delay / 1000); 953 954 /* 955 * If a card exists and we're turning it on, take it out of reset. 956 * After clearing reset, wait up to 1.1s for the first configuration 957 * register (vendor/product) configuration register of device 0.0 to 958 * become != 0xffffffff. The PCMCIA PC Card Host System Specification 959 * says that when powering up the card, the PCI Spec v2.1 must be 960 * followed. In PCI spec v2.2 Table 4-6, Trhfa (Reset High to first 961 * Config Access) is at most 2^25 clocks, or just over 1s. Section 962 * 2.2.1 states any card not ready to participate in bus transactions 963 * must tristate its outputs. Therefore, any access to its 964 * configuration registers must be ignored. In that state, the config 965 * reg will read 0xffffffff. Section 6.2.1 states a vendor id of 966 * 0xffff is invalid, so this can never match a real card. Print a 967 * warning if it never returns a real id. The PCMCIA PC Card 968 * Electrical Spec Section 5.2.7.1 implies only device 0 is present on 969 * a cardbus bus, so that's the only register we check here. 970 */ 971 if (on && CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) { 972 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, 973 &~CBBM_BRIDGECTRL_RESET, 2); 974 b = pcib_get_bus(child); 975 count = 1100 / 20; 976 do { 977 pause("cbbP4", hz * 2 / 100); 978 } while (PCIB_READ_CONFIG(brdev, b, 0, 0, PCIR_DEVVENDOR, 4) == 979 0xfffffffful && --count >= 0); 980 if (count < 0) 981 device_printf(brdev, "Warning: Bus reset timeout\n"); 982 983 /* 984 * Some cards (so far just an atheros card I have) seem to 985 * come out of reset in a funky state. They report they are 986 * multi-function cards, but have nonsense for some of the 987 * higher functions. So if the card claims to be MFDEV, and 988 * any of the higher functions' ID is 0, then we've hit the 989 * bug and we'll try again. 990 */ 991 h = PCIB_READ_CONFIG(brdev, b, 0, 0, PCIR_HDRTYPE, 1); 992 if ((h & PCIM_MFDEV) == 0) 993 return 0; 994 zero_seen = 0; 995 for (func = 1; func < 8; func++) { 996 h = PCIB_READ_CONFIG(brdev, b, 0, func, 997 PCIR_DEVVENDOR, 4); 998 if (h == 0) 999 zero_seen++; 1000 } 1001 if (!zero_seen) 1002 return 0; 1003 return (EINVAL); 1004 } 1005 return 0; 1006 } 1007 1008 static int 1009 cbb_cardbus_power_disable_socket(device_t brdev, device_t child) 1010 { 1011 cbb_power(brdev, CARD_OFF); 1012 cbb_cardbus_reset_power(brdev, child, 0); 1013 return (0); 1014 } 1015 1016 static int 1017 cbb_cardbus_power_enable_socket(device_t brdev, device_t child) 1018 { 1019 struct cbb_softc *sc = device_get_softc(brdev); 1020 int err, count; 1021 1022 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) 1023 return (ENODEV); 1024 1025 count = 10; 1026 do { 1027 err = cbb_do_power(brdev); 1028 if (err) 1029 return (err); 1030 err = cbb_cardbus_reset_power(brdev, child, 1); 1031 if (err) { 1032 device_printf(brdev, "Reset failed, trying again.\n"); 1033 cbb_cardbus_power_disable_socket(brdev, child); 1034 pause("cbbErr1", hz / 10); /* wait 100ms */ 1035 } 1036 } while (err != 0 && count-- > 0); 1037 return (0); 1038 } 1039 1040 /************************************************************************/ 1041 /* CardBus Resource */ 1042 /************************************************************************/ 1043 1044 static void 1045 cbb_activate_window(device_t brdev, int type) 1046 { 1047 1048 PCI_ENABLE_IO(device_get_parent(brdev), brdev, type); 1049 } 1050 1051 static int 1052 cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end) 1053 { 1054 int basereg; 1055 int limitreg; 1056 1057 if ((win < 0) || (win > 1)) { 1058 DEVPRINTF((brdev, 1059 "cbb_cardbus_io_open: window out of range %d\n", win)); 1060 return (EINVAL); 1061 } 1062 1063 basereg = win * 8 + CBBR_IOBASE0; 1064 limitreg = win * 8 + CBBR_IOLIMIT0; 1065 1066 pci_write_config(brdev, basereg, start, 4); 1067 pci_write_config(brdev, limitreg, end, 4); 1068 cbb_activate_window(brdev, SYS_RES_IOPORT); 1069 return (0); 1070 } 1071 1072 static int 1073 cbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end) 1074 { 1075 int basereg; 1076 int limitreg; 1077 1078 if ((win < 0) || (win > 1)) { 1079 DEVPRINTF((brdev, 1080 "cbb_cardbus_mem_open: window out of range %d\n", win)); 1081 return (EINVAL); 1082 } 1083 1084 basereg = win * 8 + CBBR_MEMBASE0; 1085 limitreg = win * 8 + CBBR_MEMLIMIT0; 1086 1087 pci_write_config(brdev, basereg, start, 4); 1088 pci_write_config(brdev, limitreg, end, 4); 1089 cbb_activate_window(brdev, SYS_RES_MEMORY); 1090 return (0); 1091 } 1092 1093 #define START_NONE 0xffffffff 1094 #define END_NONE 0 1095 1096 static void 1097 cbb_cardbus_auto_open(struct cbb_softc *sc, int type) 1098 { 1099 uint32_t starts[2]; 1100 uint32_t ends[2]; 1101 struct cbb_reslist *rle; 1102 int align, i; 1103 uint32_t reg; 1104 1105 starts[0] = starts[1] = START_NONE; 1106 ends[0] = ends[1] = END_NONE; 1107 1108 if (type == SYS_RES_MEMORY) 1109 align = CBB_MEMALIGN; 1110 else if (type == SYS_RES_IOPORT) 1111 align = CBB_IOALIGN; 1112 else 1113 align = 1; 1114 1115 SLIST_FOREACH(rle, &sc->rl, link) { 1116 if (rle->type != type) 1117 continue; 1118 if (rle->res == NULL) 1119 continue; 1120 if (!(rman_get_flags(rle->res) & RF_ACTIVE)) 1121 continue; 1122 if (rman_get_flags(rle->res) & RF_PREFETCHABLE) 1123 i = 1; 1124 else 1125 i = 0; 1126 if (rman_get_start(rle->res) < starts[i]) 1127 starts[i] = rman_get_start(rle->res); 1128 if (rman_get_end(rle->res) > ends[i]) 1129 ends[i] = rman_get_end(rle->res); 1130 } 1131 for (i = 0; i < 2; i++) { 1132 if (starts[i] == START_NONE) 1133 continue; 1134 starts[i] &= ~(align - 1); 1135 ends[i] = roundup2(ends[i], align) - 1; 1136 } 1137 if (starts[0] != START_NONE && starts[1] != START_NONE) { 1138 if (starts[0] < starts[1]) { 1139 if (ends[0] > starts[1]) { 1140 device_printf(sc->dev, "Overlapping ranges" 1141 " for prefetch and non-prefetch memory\n"); 1142 return; 1143 } 1144 } else { 1145 if (ends[1] > starts[0]) { 1146 device_printf(sc->dev, "Overlapping ranges" 1147 " for prefetch and non-prefetch memory\n"); 1148 return; 1149 } 1150 } 1151 } 1152 1153 if (type == SYS_RES_MEMORY) { 1154 cbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]); 1155 cbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]); 1156 reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2); 1157 reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0 | 1158 CBBM_BRIDGECTRL_PREFETCH_1); 1159 if (starts[1] != START_NONE) 1160 reg |= CBBM_BRIDGECTRL_PREFETCH_1; 1161 pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2); 1162 if (bootverbose) { 1163 device_printf(sc->dev, "Opening memory:\n"); 1164 if (starts[0] != START_NONE) 1165 device_printf(sc->dev, "Normal: %#x-%#x\n", 1166 starts[0], ends[0]); 1167 if (starts[1] != START_NONE) 1168 device_printf(sc->dev, "Prefetch: %#x-%#x\n", 1169 starts[1], ends[1]); 1170 } 1171 } else if (type == SYS_RES_IOPORT) { 1172 cbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]); 1173 cbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]); 1174 if (bootverbose && starts[0] != START_NONE) 1175 device_printf(sc->dev, "Opening I/O: %#x-%#x\n", 1176 starts[0], ends[0]); 1177 } 1178 } 1179 1180 static int 1181 cbb_cardbus_activate_resource(device_t brdev, device_t child, int type, 1182 int rid, struct resource *res) 1183 { 1184 int ret; 1185 1186 ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child, 1187 type, rid, res); 1188 if (ret != 0) 1189 return (ret); 1190 cbb_cardbus_auto_open(device_get_softc(brdev), type); 1191 return (0); 1192 } 1193 1194 static int 1195 cbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type, 1196 int rid, struct resource *res) 1197 { 1198 int ret; 1199 1200 ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child, 1201 type, rid, res); 1202 if (ret != 0) 1203 return (ret); 1204 cbb_cardbus_auto_open(device_get_softc(brdev), type); 1205 return (0); 1206 } 1207 1208 static struct resource * 1209 cbb_cardbus_alloc_resource(device_t brdev, device_t child, int type, 1210 int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1211 { 1212 struct cbb_softc *sc = device_get_softc(brdev); 1213 int tmp; 1214 struct resource *res; 1215 rman_res_t align; 1216 1217 switch (type) { 1218 case SYS_RES_IRQ: 1219 tmp = rman_get_start(sc->irq_res); 1220 if (start > tmp || end < tmp || count != 1) { 1221 device_printf(child, "requested interrupt %jd-%jd," 1222 "count = %jd not supported by cbb\n", 1223 start, end, count); 1224 return (NULL); 1225 } 1226 start = end = tmp; 1227 flags |= RF_SHAREABLE; 1228 break; 1229 case SYS_RES_IOPORT: 1230 if (start <= cbb_start_32_io) 1231 start = cbb_start_32_io; 1232 if (end < start) 1233 end = start; 1234 if (count > (1 << RF_ALIGNMENT(flags))) 1235 flags = (flags & ~RF_ALIGNMENT_MASK) | 1236 rman_make_alignment_flags(count); 1237 break; 1238 case SYS_RES_MEMORY: 1239 if (start <= cbb_start_mem) 1240 start = cbb_start_mem; 1241 if (end < start) 1242 end = start; 1243 if (count < CBB_MEMALIGN) 1244 align = CBB_MEMALIGN; 1245 else 1246 align = count; 1247 if (align > (1 << RF_ALIGNMENT(flags))) 1248 flags = (flags & ~RF_ALIGNMENT_MASK) | 1249 rman_make_alignment_flags(align); 1250 break; 1251 } 1252 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid, 1253 start, end, count, flags & ~RF_ACTIVE); 1254 if (res == NULL) { 1255 printf("cbb alloc res fail type %d rid %x\n", type, *rid); 1256 return (NULL); 1257 } 1258 cbb_insert_res(sc, res, type, *rid); 1259 if (flags & RF_ACTIVE) 1260 if (bus_activate_resource(child, type, *rid, res) != 0) { 1261 bus_release_resource(child, type, *rid, res); 1262 return (NULL); 1263 } 1264 1265 return (res); 1266 } 1267 1268 static int 1269 cbb_cardbus_release_resource(device_t brdev, device_t child, int type, 1270 int rid, struct resource *res) 1271 { 1272 struct cbb_softc *sc = device_get_softc(brdev); 1273 int error; 1274 1275 if (rman_get_flags(res) & RF_ACTIVE) { 1276 error = bus_deactivate_resource(child, type, rid, res); 1277 if (error != 0) 1278 return (error); 1279 } 1280 cbb_remove_res(sc, res); 1281 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 1282 type, rid, res)); 1283 } 1284 1285 /************************************************************************/ 1286 /* PC Card Power Functions */ 1287 /************************************************************************/ 1288 1289 static int 1290 cbb_pcic_power_enable_socket(device_t brdev, device_t child) 1291 { 1292 struct cbb_softc *sc = device_get_softc(brdev); 1293 int err; 1294 1295 DPRINTF(("cbb_pcic_socket_enable:\n")); 1296 1297 /* power down/up the socket to reset */ 1298 err = cbb_do_power(brdev); 1299 if (err) 1300 return (err); 1301 exca_reset(&sc->exca, child); 1302 1303 return (0); 1304 } 1305 1306 static int 1307 cbb_pcic_power_disable_socket(device_t brdev, device_t child) 1308 { 1309 struct cbb_softc *sc = device_get_softc(brdev); 1310 1311 DPRINTF(("cbb_pcic_socket_disable\n")); 1312 1313 /* Turn off the card's interrupt and leave it in reset, wait 10ms */ 1314 exca_putb(&sc->exca, EXCA_INTR, 0); 1315 pause("cbbP1", hz / 100); 1316 1317 /* power down the socket */ 1318 cbb_power(brdev, CARD_OFF); 1319 exca_putb(&sc->exca, EXCA_PWRCTL, 0); 1320 1321 /* wait 300ms until power fails (Tpf). */ 1322 pause("cbbP2", hz * 300 / 1000); 1323 1324 /* enable CSC interrupts */ 1325 exca_putb(&sc->exca, EXCA_INTR, EXCA_INTR_ENABLE); 1326 return (0); 1327 } 1328 1329 /************************************************************************/ 1330 /* POWER methods */ 1331 /************************************************************************/ 1332 1333 int 1334 cbb_power_enable_socket(device_t brdev, device_t child) 1335 { 1336 struct cbb_softc *sc = device_get_softc(brdev); 1337 1338 if (sc->flags & CBB_16BIT_CARD) 1339 return (cbb_pcic_power_enable_socket(brdev, child)); 1340 return (cbb_cardbus_power_enable_socket(brdev, child)); 1341 } 1342 1343 int 1344 cbb_power_disable_socket(device_t brdev, device_t child) 1345 { 1346 struct cbb_softc *sc = device_get_softc(brdev); 1347 if (sc->flags & CBB_16BIT_CARD) 1348 return (cbb_pcic_power_disable_socket(brdev, child)); 1349 return (cbb_cardbus_power_disable_socket(brdev, child)); 1350 } 1351 1352 static int 1353 cbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid, 1354 struct resource *res) 1355 { 1356 struct cbb_softc *sc = device_get_softc(brdev); 1357 int error; 1358 1359 error = exca_activate_resource(&sc->exca, child, type, rid, res); 1360 if (error == 0) 1361 cbb_activate_window(brdev, type); 1362 return (error); 1363 } 1364 1365 static int 1366 cbb_pcic_deactivate_resource(device_t brdev, device_t child, int type, 1367 int rid, struct resource *res) 1368 { 1369 struct cbb_softc *sc = device_get_softc(brdev); 1370 return (exca_deactivate_resource(&sc->exca, child, type, rid, res)); 1371 } 1372 1373 static struct resource * 1374 cbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid, 1375 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1376 { 1377 struct resource *res = NULL; 1378 struct cbb_softc *sc = device_get_softc(brdev); 1379 int align; 1380 int tmp; 1381 1382 switch (type) { 1383 case SYS_RES_MEMORY: 1384 if (start < cbb_start_mem) 1385 start = cbb_start_mem; 1386 if (end < start) 1387 end = start; 1388 if (count < CBB_MEMALIGN) 1389 align = CBB_MEMALIGN; 1390 else 1391 align = count; 1392 if (align > (1 << RF_ALIGNMENT(flags))) 1393 flags = (flags & ~RF_ALIGNMENT_MASK) | 1394 rman_make_alignment_flags(align); 1395 break; 1396 case SYS_RES_IOPORT: 1397 if (start < cbb_start_16_io) 1398 start = cbb_start_16_io; 1399 if (end < start) 1400 end = start; 1401 break; 1402 case SYS_RES_IRQ: 1403 tmp = rman_get_start(sc->irq_res); 1404 if (start > tmp || end < tmp || count != 1) { 1405 device_printf(child, "requested interrupt %jd-%jd," 1406 "count = %jd not supported by cbb\n", 1407 start, end, count); 1408 return (NULL); 1409 } 1410 flags |= RF_SHAREABLE; 1411 start = end = rman_get_start(sc->irq_res); 1412 break; 1413 } 1414 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid, 1415 start, end, count, flags & ~RF_ACTIVE); 1416 if (res == NULL) 1417 return (NULL); 1418 cbb_insert_res(sc, res, type, *rid); 1419 if (flags & RF_ACTIVE) { 1420 if (bus_activate_resource(child, type, *rid, res) != 0) { 1421 bus_release_resource(child, type, *rid, res); 1422 return (NULL); 1423 } 1424 } 1425 1426 return (res); 1427 } 1428 1429 static int 1430 cbb_pcic_release_resource(device_t brdev, device_t child, int type, 1431 int rid, struct resource *res) 1432 { 1433 struct cbb_softc *sc = device_get_softc(brdev); 1434 int error; 1435 1436 if (rman_get_flags(res) & RF_ACTIVE) { 1437 error = bus_deactivate_resource(child, type, rid, res); 1438 if (error != 0) 1439 return (error); 1440 } 1441 cbb_remove_res(sc, res); 1442 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child, 1443 type, rid, res)); 1444 } 1445 1446 /************************************************************************/ 1447 /* PC Card methods */ 1448 /************************************************************************/ 1449 1450 int 1451 cbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid, 1452 u_long flags) 1453 { 1454 struct cbb_softc *sc = device_get_softc(brdev); 1455 struct resource *res; 1456 1457 if (type != SYS_RES_MEMORY) 1458 return (EINVAL); 1459 res = cbb_find_res(sc, type, rid); 1460 if (res == NULL) { 1461 device_printf(brdev, 1462 "set_res_flags: specified rid not found\n"); 1463 return (ENOENT); 1464 } 1465 return (exca_mem_set_flags(&sc->exca, res, flags)); 1466 } 1467 1468 int 1469 cbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid, 1470 uint32_t cardaddr, uint32_t *deltap) 1471 { 1472 struct cbb_softc *sc = device_get_softc(brdev); 1473 struct resource *res; 1474 1475 res = cbb_find_res(sc, SYS_RES_MEMORY, rid); 1476 if (res == NULL) { 1477 device_printf(brdev, 1478 "set_memory_offset: specified rid not found\n"); 1479 return (ENOENT); 1480 } 1481 return (exca_mem_set_offset(&sc->exca, res, cardaddr, deltap)); 1482 } 1483 1484 /************************************************************************/ 1485 /* BUS Methods */ 1486 /************************************************************************/ 1487 1488 int 1489 cbb_activate_resource(device_t brdev, device_t child, int type, int rid, 1490 struct resource *r) 1491 { 1492 struct cbb_softc *sc = device_get_softc(brdev); 1493 1494 if (sc->flags & CBB_16BIT_CARD) 1495 return (cbb_pcic_activate_resource(brdev, child, type, rid, r)); 1496 else 1497 return (cbb_cardbus_activate_resource(brdev, child, type, rid, 1498 r)); 1499 } 1500 1501 int 1502 cbb_deactivate_resource(device_t brdev, device_t child, int type, 1503 int rid, 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_deactivate_resource(brdev, child, type, 1509 rid, r)); 1510 else 1511 return (cbb_cardbus_deactivate_resource(brdev, child, type, 1512 rid, r)); 1513 } 1514 1515 struct resource * 1516 cbb_alloc_resource(device_t brdev, device_t child, int type, int *rid, 1517 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) 1518 { 1519 struct cbb_softc *sc = device_get_softc(brdev); 1520 1521 if (sc->flags & CBB_16BIT_CARD) 1522 return (cbb_pcic_alloc_resource(brdev, child, type, rid, 1523 start, end, count, flags)); 1524 else 1525 return (cbb_cardbus_alloc_resource(brdev, child, type, rid, 1526 start, end, count, flags)); 1527 } 1528 1529 int 1530 cbb_release_resource(device_t brdev, device_t child, int type, int rid, 1531 struct resource *r) 1532 { 1533 struct cbb_softc *sc = device_get_softc(brdev); 1534 1535 if (sc->flags & CBB_16BIT_CARD) 1536 return (cbb_pcic_release_resource(brdev, child, type, 1537 rid, r)); 1538 else 1539 return (cbb_cardbus_release_resource(brdev, child, type, 1540 rid, r)); 1541 } 1542 1543 int 1544 cbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result) 1545 { 1546 struct cbb_softc *sc = device_get_softc(brdev); 1547 1548 switch (which) { 1549 case PCIB_IVAR_DOMAIN: 1550 *result = sc->domain; 1551 return (0); 1552 case PCIB_IVAR_BUS: 1553 *result = sc->bus.sec; 1554 return (0); 1555 case EXCA_IVAR_SLOT: 1556 *result = 0; 1557 return (0); 1558 } 1559 return (ENOENT); 1560 } 1561 1562 int 1563 cbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value) 1564 { 1565 1566 switch (which) { 1567 case PCIB_IVAR_DOMAIN: 1568 return (EINVAL); 1569 case PCIB_IVAR_BUS: 1570 return (EINVAL); 1571 case EXCA_IVAR_SLOT: 1572 return (EINVAL); 1573 } 1574 return (ENOENT); 1575 } 1576 1577 int 1578 cbb_child_present(device_t parent, device_t child) 1579 { 1580 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(parent); 1581 uint32_t sockstate; 1582 1583 sockstate = cbb_get(sc, CBB_SOCKET_STATE); 1584 return (CBB_CARD_PRESENT(sockstate) && sc->cardok); 1585 }
Cache object: e53b0cb674bc6624b0298c696f1bcb99
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