2 * Copyright (c) 2002-2004 M. Warner Losh.
3 * Copyright (c) 2000-2001 Jonathan Chen.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Copyright (c) 1998, 1999 and 2000
31 * HAYAKAWA Koichi. All rights reserved.
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by HAYAKAWA Koichi.
44 * 4. The name of the author may not be used to endorse or promote products
45 * derived from this software without specific prior written permission.
47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60 * Driver for PCI to CardBus Bridge chips
61 * and PCI to PCMCIA Bridge chips
62 * and ISA to PCMCIA host adapters
63 * and C Bus to PCMCIA host adapters
67 * http://www-s.ti.com/cgi-bin/sc/generic2.cgi?family=PCI+CARDBUS+CONTROLLERS
69 * Written by Jonathan Chen <jon@freebsd.org>
70 * The author would like to acknowledge:
71 * * HAYAKAWA Koichi: Author of the NetBSD code for the same thing
72 * * Warner Losh: Newbus/newcard guru and author of the pccard side of things
73 * * YAMAMOTO Shigeru: Author of another FreeBSD cardbus driver
74 * * David Cross: Author of the initial ugly hack for a specific cardbus card
77 #include <sys/cdefs.h>
78 __FBSDID("$FreeBSD$");
80 #include <sys/param.h>
82 #include <sys/condvar.h>
83 #include <sys/errno.h>
84 #include <sys/kernel.h>
85 #include <sys/module.h>
86 #include <sys/kthread.h>
88 #include <sys/malloc.h>
89 #include <sys/mutex.h>
92 #include <sys/sysctl.h>
93 #include <sys/systm.h>
94 #include <machine/bus.h>
95 #include <machine/resource.h>
97 #include <dev/pci/pcireg.h>
98 #include <dev/pci/pcivar.h>
100 #include <dev/pccard/pccardreg.h>
101 #include <dev/pccard/pccardvar.h>
103 #include <dev/exca/excareg.h>
104 #include <dev/exca/excavar.h>
106 #include <dev/pccbb/pccbbreg.h>
107 #include <dev/pccbb/pccbbvar.h>
109 #include "power_if.h"
113 #define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
114 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
116 #define PCI_MASK_CONFIG(DEV,REG,MASK,SIZE) \
117 pci_write_config(DEV, REG, pci_read_config(DEV, REG, SIZE) MASK, SIZE)
118 #define PCI_MASK2_CONFIG(DEV,REG,MASK1,MASK2,SIZE) \
119 pci_write_config(DEV, REG, ( \
120 pci_read_config(DEV, REG, SIZE) MASK1) MASK2, SIZE)
122 #define CBB_CARD_PRESENT(s) ((s & CBB_STATE_CD) == 0)
124 #define CBB_START_MEM 0x88000000
125 #define CBB_START_32_IO 0x1000
126 #define CBB_START_16_IO 0x100
128 devclass_t cbb_devclass;
131 SYSCTL_NODE(_hw, OID_AUTO, cbb, CTLFLAG_RD, 0, "CBB parameters");
133 /* There's no way to say TUNEABLE_LONG to get the right types */
134 u_long cbb_start_mem = CBB_START_MEM;
135 TUNABLE_ULONG("hw.cbb.start_memory", &cbb_start_mem);
136 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_memory, CTLFLAG_RW,
137 &cbb_start_mem, CBB_START_MEM,
138 "Starting address for memory allocations");
140 u_long cbb_start_16_io = CBB_START_16_IO;
141 TUNABLE_ULONG("hw.cbb.start_16_io", &cbb_start_16_io);
142 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_16_io, CTLFLAG_RW,
143 &cbb_start_16_io, CBB_START_16_IO,
144 "Starting ioport for 16-bit cards");
146 u_long cbb_start_32_io = CBB_START_32_IO;
147 TUNABLE_ULONG("hw.cbb.start_32_io", &cbb_start_32_io);
148 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_32_io, CTLFLAG_RW,
149 &cbb_start_32_io, CBB_START_32_IO,
150 "Starting ioport for 32-bit cards");
153 TUNABLE_INT("hw.cbb.debug", &cbb_debug);
154 SYSCTL_ULONG(_hw_cbb, OID_AUTO, debug, CTLFLAG_RW, &cbb_debug, 0,
155 "Verbose cardbus bridge debugging");
157 static void cbb_insert(struct cbb_softc *sc);
158 static void cbb_removal(struct cbb_softc *sc);
159 static uint32_t cbb_detect_voltage(device_t brdev);
160 static void cbb_cardbus_reset(device_t brdev);
161 static int cbb_cardbus_io_open(device_t brdev, int win, uint32_t start,
163 static int cbb_cardbus_mem_open(device_t brdev, int win,
164 uint32_t start, uint32_t end);
165 static void cbb_cardbus_auto_open(struct cbb_softc *sc, int type);
166 static int cbb_cardbus_activate_resource(device_t brdev, device_t child,
167 int type, int rid, struct resource *res);
168 static int cbb_cardbus_deactivate_resource(device_t brdev,
169 device_t child, int type, int rid, struct resource *res);
170 static struct resource *cbb_cardbus_alloc_resource(device_t brdev,
171 device_t child, int type, int *rid, u_long start,
172 u_long end, u_long count, u_int flags);
173 static int cbb_cardbus_release_resource(device_t brdev, device_t child,
174 int type, int rid, struct resource *res);
175 static int cbb_cardbus_power_enable_socket(device_t brdev,
177 static void cbb_cardbus_power_disable_socket(device_t brdev,
179 static void cbb_func_intr(void *arg);
182 cbb_remove_res(struct cbb_softc *sc, struct resource *res)
184 struct cbb_reslist *rle;
186 SLIST_FOREACH(rle, &sc->rl, link) {
187 if (rle->res == res) {
188 SLIST_REMOVE(&sc->rl, rle, cbb_reslist, link);
195 static struct resource *
196 cbb_find_res(struct cbb_softc *sc, int type, int rid)
198 struct cbb_reslist *rle;
200 SLIST_FOREACH(rle, &sc->rl, link)
201 if (SYS_RES_MEMORY == rle->type && rid == rle->rid)
207 cbb_insert_res(struct cbb_softc *sc, struct resource *res, int type,
210 struct cbb_reslist *rle;
213 * Need to record allocated resource so we can iterate through
216 rle = malloc(sizeof(struct cbb_reslist), M_DEVBUF, M_NOWAIT);
218 panic("cbb_cardbus_alloc_resource: can't record entry!");
222 SLIST_INSERT_HEAD(&sc->rl, rle, link);
226 cbb_destroy_res(struct cbb_softc *sc)
228 struct cbb_reslist *rle;
230 while ((rle = SLIST_FIRST(&sc->rl)) != NULL) {
231 device_printf(sc->dev, "Danger Will Robinson: Resource "
232 "left allocated! This is a bug... "
233 "(rid=%x, type=%d, addr=%lx)\n", rle->rid, rle->type,
234 rman_get_start(rle->res));
235 SLIST_REMOVE_HEAD(&sc->rl, link);
241 * Disable function interrupts by telling the bridge to generate IRQ1
242 * interrupts. These interrupts aren't really generated by the chip, since
243 * IRQ1 is reserved. Some chipsets assert INTA# inappropriately during
244 * initialization, so this helps to work around the problem.
246 * XXX We can't do this workaround for all chipsets, because this
247 * XXX causes interference with the keyboard because somechipsets will
248 * XXX actually signal IRQ1 over their serial interrupt connections to
249 * XXX the south bridge. Disable it it for now.
252 cbb_disable_func_intr(struct cbb_softc *sc)
257 reg = (exca_getb(&sc->exca[0], EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) |
258 EXCA_INTR_IRQ_RESERVED1;
259 exca_putb(&sc->exca[0], EXCA_INTR, reg);
264 * Enable function interrupts. We turn on function interrupts when the card
265 * requests an interrupt. The PCMCIA standard says that we should set
266 * the lower 4 bits to 0 to route via PCI. Note: we call this for both
267 * CardBus and R2 (PC Card) cases, but it should have no effect on CardBus
271 cbb_enable_func_intr(struct cbb_softc *sc)
275 reg = (exca_getb(&sc->exca[0], EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) |
277 exca_putb(&sc->exca[0], EXCA_INTR, reg);
281 cbb_detach(device_t brdev)
283 struct cbb_softc *sc = device_get_softc(brdev);
285 int tmp, tries, error, numdevs;
288 * Before we delete the children (which we have to do because
289 * attach doesn't check for children busses correctly), we have
290 * to detach the children. Even if we didn't need to delete the
291 * children, we have to detach them.
293 error = bus_generic_detach(brdev);
298 * Since the attach routine doesn't search for children before it
299 * attaches them to this device, we must delete them here in order
300 * for the kldload/unload case to work. If we failed to do that, then
301 * we'd get duplicate devices when cbb.ko was reloaded.
305 error = device_get_children(brdev, &devlist, &numdevs);
309 * Try hard to cope with low memory.
311 if (error == ENOMEM) {
312 pause("cbbnomem", 1);
315 } while (tries-- > 0);
316 for (tmp = 0; tmp < numdevs; tmp++)
317 device_delete_child(brdev, devlist[tmp]);
318 free(devlist, M_TEMP);
320 /* Turn off the interrupts */
321 cbb_set(sc, CBB_SOCKET_MASK, 0);
323 /* reset 16-bit pcmcia bus */
324 exca_clrb(&sc->exca[0], EXCA_INTR, EXCA_INTR_RESET);
327 cbb_power(brdev, CARD_OFF);
329 /* Ack the interrupt */
330 cbb_set(sc, CBB_SOCKET_EVENT, 0xffffffff);
333 * Wait for the thread to die. kthread_exit will do a wakeup
334 * on the event thread's struct thread * so that we know it is
335 * save to proceed. IF the thread is running, set the please
336 * die flag and wait for it to comply. Since the wakeup on
337 * the event thread happens only in kthread_exit, we don't
341 bus_teardown_intr(brdev, sc->irq_res, sc->intrhand);
342 sc->flags |= CBB_KTHREAD_DONE;
343 while (sc->flags & CBB_KTHREAD_RUNNING) {
344 DEVPRINTF((sc->dev, "Waiting for thread to die\n"));
345 cv_broadcast(&sc->cv);
346 msleep(sc->event_thread, &sc->mtx, PWAIT, "cbbun", 0);
348 mtx_unlock(&sc->mtx);
350 bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res);
351 bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
353 mtx_destroy(&sc->mtx);
355 cv_destroy(&sc->powercv);
360 cbb_setup_intr(device_t dev, device_t child, struct resource *irq,
361 int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
364 struct cbb_intrhand *ih;
365 struct cbb_softc *sc = device_get_softc(dev);
369 * Well, this is no longer strictly true. You can have multiple
370 * FAST ISRs, but can't mix fast and slow, so we have to assume
371 * least common denominator until the base system supports mixing
372 * and matching better.
376 ih = malloc(sizeof(struct cbb_intrhand), M_DEVBUF, M_NOWAIT);
384 * XXX need to turn on ISA interrupts, if we ever support them, but
385 * XXX for now that's all we need to do.
387 err = BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags,
388 NULL, cbb_func_intr, ih, &ih->cookie);
393 cbb_enable_func_intr(sc);
394 sc->flags |= CBB_CARD_OK;
399 cbb_teardown_intr(device_t dev, device_t child, struct resource *irq,
402 struct cbb_intrhand *ih;
405 /* XXX Need to do different things for ISA interrupts. */
406 ih = (struct cbb_intrhand *) cookie;
407 err = BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq,
417 cbb_driver_added(device_t brdev, driver_t *driver)
419 struct cbb_softc *sc = device_get_softc(brdev);
426 DEVICE_IDENTIFY(driver, brdev);
427 tmp = device_get_children(brdev, &devlist, &numdevs);
429 device_printf(brdev, "Cannot get children list, no reprobe\n");
432 for (tmp = 0; tmp < numdevs; tmp++) {
434 if (device_get_state(dev) == DS_NOTPRESENT &&
435 device_probe_and_attach(dev) == 0)
438 free(devlist, M_TEMP);
443 mtx_unlock(&sc->mtx);
448 cbb_child_detached(device_t brdev, device_t child)
450 struct cbb_softc *sc = device_get_softc(brdev);
452 /* I'm not sure we even need this */
453 if (child != sc->cbdev && child != sc->exca[0].pccarddev)
454 device_printf(brdev, "Unknown child detached: %s\n",
455 device_get_nameunit(child));
458 /************************************************************************/
460 /************************************************************************/
463 cbb_event_thread(void *arg)
465 struct cbb_softc *sc = arg;
471 sc->flags |= CBB_KTHREAD_RUNNING;
472 mtx_unlock(&sc->mtx);
473 while ((sc->flags & CBB_KTHREAD_DONE) == 0) {
475 * We take out Giant here because we need it deep,
476 * down in the bowels of the vm system for mapping the
477 * memory we need to read the CIS. In addition, since
478 * we are adding/deleting devices from the dev tree,
479 * and that code isn't MP safe, we have to hold Giant.
482 status = cbb_get(sc, CBB_SOCKET_STATE);
483 DPRINTF(("Status is 0x%x\n", status));
484 if (!CBB_CARD_PRESENT(status)) {
485 not_a_card = 0; /* We know card type */
487 } else if (status & CBB_STATE_NOT_A_CARD) {
489 * Up to 10 times, try to rescan the card when we see
490 * NOT_A_CARD. 10 is somehwat arbitrary. When this
491 * pathology hits, there's a ~40% chance each try will
492 * fail. 10 tries takes about 5s and results in a
493 * 99.99% certainty of the results.
495 if (not_a_card++ < 10) {
497 "Not a card bit set, rescanning\n"));
498 cbb_setb(sc, CBB_SOCKET_FORCE, CBB_FORCE_CV_TEST);
500 device_printf(sc->dev,
501 "Can't determine card type\n");
504 not_a_card = 0; /* We know card type */
510 * Wait until it has been 250ms since the last time we
511 * get an interrupt. We handle the rest of the interrupt
512 * at the top of the loop. Although we clear the bit in the
513 * ISR, we signal sc->cv from the detach path after we've
514 * set the CBB_KTHREAD_DONE bit, so we can't do a simple
517 * In our ISR, we turn off the card changed interrupt. Turn
518 * them back on here before we wait for them to happen. We
519 * turn them on/off so that we can tolerate a large latency
520 * between the time we signal cbb_event_thread and it gets
524 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
525 cv_wait(&sc->cv, &sc->mtx);
527 while (err != EWOULDBLOCK &&
528 (sc->flags & CBB_KTHREAD_DONE) == 0)
529 err = cv_timedwait(&sc->cv, &sc->mtx, hz / 4);
530 mtx_unlock(&sc->mtx);
532 DEVPRINTF((sc->dev, "Thread terminating\n"));
534 sc->flags &= ~CBB_KTHREAD_RUNNING;
535 mtx_unlock(&sc->mtx);
539 /************************************************************************/
541 /************************************************************************/
544 cbb_insert(struct cbb_softc *sc)
546 uint32_t sockevent, sockstate;
548 sockevent = cbb_get(sc, CBB_SOCKET_EVENT);
549 sockstate = cbb_get(sc, CBB_SOCKET_STATE);
551 DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n",
552 sockevent, sockstate));
554 if (sockstate & CBB_STATE_R2_CARD) {
555 if (device_is_attached(sc->exca[0].pccarddev)) {
556 sc->flags |= CBB_16BIT_CARD;
557 exca_insert(&sc->exca[0]);
559 device_printf(sc->dev,
560 "16-bit card inserted, but no pccard bus.\n");
562 } else if (sockstate & CBB_STATE_CB_CARD) {
563 if (device_is_attached(sc->cbdev)) {
564 sc->flags &= ~CBB_16BIT_CARD;
565 CARD_ATTACH_CARD(sc->cbdev);
567 device_printf(sc->dev,
568 "CardBus card inserted, but no cardbus bus.\n");
572 * We should power the card down, and try again a couple of
573 * times if this happens. XXX
575 device_printf(sc->dev, "Unsupported card type detected\n");
580 cbb_removal(struct cbb_softc *sc)
582 sc->flags &= ~CBB_CARD_OK;
583 if (sc->flags & CBB_16BIT_CARD) {
584 exca_removal(&sc->exca[0]);
586 if (device_is_attached(sc->cbdev))
587 CARD_DETACH_CARD(sc->cbdev);
592 /************************************************************************/
593 /* Interrupt Handler */
594 /************************************************************************/
597 * Since we touch hardware in the worst case, we don't need to use atomic
598 * ops on the CARD_OK tests. They would save us a trip to the hardware
599 * if CARD_OK was recently cleared and the caches haven't updated yet.
600 * However, an atomic op costs between 100-200 CPU cycles. On a 3GHz
601 * machine, this is about 33-66ns, whereas a trip the the hardware
602 * is about that. On slower machines, the cost is even higher, so the
603 * trip to the hardware is cheaper and achieves the same ends that
604 * a fully locked operation would give us.
606 * This is a separate routine because we'd have to use locking and/or
607 * other synchronization in cbb_intr to do this there. That would be
608 * even more expensive.
610 * I need to investigate what this means for a SMP machine with multiple
611 * CPUs servicing the ISR when an eject happens. In the case of a dirty
612 * eject, CD glitches and we might read 'card present' from the hardware
613 * due to this jitter. If we assumed that cbb_intr() ran before
614 * cbb_func_intr(), we could just check the SOCKET_MASK register and if
615 * CD changes were clear there, then we'd know the card was gone.
618 cbb_func_intr(void *arg)
620 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg;
621 struct cbb_softc *sc = ih->sc;
624 * Make sure that the card is really there.
626 if ((sc->flags & CBB_CARD_OK) == 0)
628 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) {
629 sc->flags &= ~CBB_CARD_OK;
634 * nb: don't have to check for giant or not, since that's done
635 * in the ISR dispatch
637 (*ih->intr)(ih->arg);
640 /************************************************************************/
641 /* Generic Power functions */
642 /************************************************************************/
645 cbb_detect_voltage(device_t brdev)
647 struct cbb_softc *sc = device_get_softc(brdev);
649 uint32_t vol = CARD_UKN_CARD;
651 psr = cbb_get(sc, CBB_SOCKET_STATE);
653 if (psr & CBB_STATE_5VCARD && psr & CBB_STATE_5VSOCK)
655 if (psr & CBB_STATE_3VCARD && psr & CBB_STATE_3VSOCK)
657 if (psr & CBB_STATE_XVCARD && psr & CBB_STATE_XVSOCK)
659 if (psr & CBB_STATE_YVCARD && psr & CBB_STATE_YVSOCK)
666 cbb_o2micro_power_hack(struct cbb_softc *sc)
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
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.
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.
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
699 reg = exca_getb(&sc->exca[0], EXCA_INTR);
700 exca_putb(&sc->exca[0], EXCA_INTR, (reg & 0xf0) | 1);
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 efect of
707 * disabling card status change interrupts for the duration of poweron.
710 cbb_o2micro_power_hack2(struct cbb_softc *sc, uint8_t reg)
712 exca_putb(&sc->exca[0], EXCA_INTR, reg);
716 cbb_power(device_t brdev, int volts)
718 uint32_t status, sock_ctrl, reg_ctrl, mask;
719 struct cbb_softc *sc = device_get_softc(brdev);
725 sock_ctrl = cbb_get(sc, CBB_SOCKET_CONTROL);
727 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
728 switch (volts & CARD_VCCMASK) {
730 sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V;
734 sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V;
738 sock_ctrl |= CBB_SOCKET_CTRL_VCC_XV;
742 sock_ctrl |= CBB_SOCKET_CTRL_VCC_YV;
748 return (0); /* power NEVER changed */
752 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
753 sock_ctrl |= ((sock_ctrl >> 4) & 0x07);
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);
762 * We have to mask the card change detect interrupt while
763 * we're messing with the power. It is allowed to bounce
764 * while we're messing with power as things settle down. In
765 * addition, we mask off the card's function interrupt by
766 * routing it via the ISA bus. This bit generally only
767 * affects 16-bit cards. Some bridges allow one to set
768 * another bit to have it also affect 32-bit cards. Since
769 * 32-bit cards are required to be better behaved, we don't
770 * bother to get into those bridge specific features.
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);
783 * We have a shortish timeout of 500ms here. Some
784 * bridges do not generate a POWER_CYCLE event for
785 * 16-bit cards. In those cases, we have to cope the
786 * best we can, and having only a short delay is
787 * better than the alternatives.
790 while (!(cbb_get(sc, CBB_SOCKET_STATE) & CBB_STATE_POWER_CYCLE) &&
791 cnt == sc->powerintr && sane-- > 0)
792 cv_timedwait(&sc->powercv, &sc->mtx, hz / 20);
793 mtx_unlock(&sc->mtx);
795 * The TOPIC95B requires a little bit extra time to get
796 * its act together, so delay for an additional 100ms. Also
797 * as documented below, it doesn't seem to set the POWER_CYCLE
798 * bit, so don't whine if it never came on.
800 if (sc->chipset == CB_TOPIC95) {
801 pause("cbb95B", hz / 10);
802 } else if (sane <= 0) {
803 device_printf(sc->dev, "power timeout, doom?\n");
808 * After the power is good, we can turn off the power interrupt.
809 * However, the PC Card standard says that we must delay turning the
810 * CD bit back on for a bit to allow for bouncyness on power down
811 * (recall that we don't wait above for a power down, since we don't
812 * get an interrupt for that). We're called either from the suspend
813 * code in which case we don't want to turn card change on again, or
814 * we're called from the card insertion code, in which case the cbb
815 * thread will turn it on for us before it waits to be woken by a
818 * NB: Topic95B doesn't set the power cycle bit. we assume that
819 * both it and the TOPIC95 behave the same.
821 cbb_clrb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_POWER);
822 status = cbb_get(sc, CBB_SOCKET_STATE);
823 if (on && sc->chipset != CB_TOPIC95) {
824 if ((status & CBB_STATE_POWER_CYCLE) == 0)
825 device_printf(sc->dev, "Power not on?\n");
827 if (status & CBB_STATE_BAD_VCC_REQ) {
828 device_printf(sc->dev, "Bad Vcc requested\n");
829 /* XXX Do we want to do something to mitigate things here? */
832 if (sc->chipset == CB_TOPIC97) {
833 reg_ctrl = pci_read_config(sc->dev, TOPIC_REG_CTRL, 4);
834 reg_ctrl &= ~TOPIC97_REG_CTRL_TESTMODE;
836 reg_ctrl |= TOPIC97_REG_CTRL_CLKRUN_ENA;
838 reg_ctrl &= ~TOPIC97_REG_CTRL_CLKRUN_ENA;
839 pci_write_config(sc->dev, TOPIC_REG_CTRL, reg_ctrl, 4);
841 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
842 & ~CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2);
845 if (volts != 0 && sc->chipset == CB_O2MICRO)
846 cbb_o2micro_power_hack2(sc, reg);
851 cbb_current_voltage(device_t brdev)
853 struct cbb_softc *sc = device_get_softc(brdev);
856 ctrl = cbb_get(sc, CBB_SOCKET_CONTROL);
857 switch (ctrl & CBB_SOCKET_CTRL_VCCMASK) {
858 case CBB_SOCKET_CTRL_VCC_5V:
860 case CBB_SOCKET_CTRL_VCC_3V:
862 case CBB_SOCKET_CTRL_VCC_XV:
864 case CBB_SOCKET_CTRL_VCC_YV:
871 * detect the voltage for the card, and set it. Since the power
872 * used is the square of the voltage, lower voltages is a big win
873 * and what Windows does (and what Microsoft prefers). The MS paper
874 * also talks about preferring the CIS entry as well, but that has
875 * to be done elsewhere. We also optimize power sequencing here
876 * and don't change things if we're already powered up at a supported
879 * In addition, we power up with OE disabled. We'll set it later
880 * in the power up sequence.
883 cbb_do_power(device_t brdev)
885 struct cbb_softc *sc = device_get_softc(brdev);
886 uint32_t voltage, curpwr;
889 /* Don't enable OE (output enable) until power stable */
890 exca_clrb(&sc->exca[0], EXCA_PWRCTL, EXCA_PWRCTL_OE);
892 voltage = cbb_detect_voltage(brdev);
893 curpwr = cbb_current_voltage(brdev);
894 status = cbb_get(sc, CBB_SOCKET_STATE);
895 if ((status & CBB_STATE_POWER_CYCLE) && (voltage & curpwr))
897 /* Prefer lowest voltage supported */
898 cbb_power(brdev, CARD_OFF);
899 if (voltage & CARD_YV_CARD)
900 cbb_power(brdev, CARD_VCC(YV));
901 else if (voltage & CARD_XV_CARD)
902 cbb_power(brdev, CARD_VCC(XV));
903 else if (voltage & CARD_3V_CARD)
904 cbb_power(brdev, CARD_VCC(3));
905 else if (voltage & CARD_5V_CARD)
906 cbb_power(brdev, CARD_VCC(5));
908 device_printf(brdev, "Unknown card voltage\n");
914 /************************************************************************/
915 /* CardBus power functions */
916 /************************************************************************/
919 cbb_cardbus_reset(device_t brdev)
921 struct cbb_softc *sc = device_get_softc(brdev);
925 * 20ms is necessary for most bridges. For some reason, the Ricoh
926 * RF5C47x bridges need 400ms.
928 delay = sc->chipset == CB_RF5C47X ? 400 : 20;
930 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
932 pause("cbbP3", hz * delay / 1000);
934 /* If a card exists, unreset it! */
935 if (CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) {
936 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
937 &~CBBM_BRIDGECTRL_RESET, 2);
938 pause("cbbP4", hz * delay / 1000);
943 cbb_cardbus_power_enable_socket(device_t brdev, device_t child)
945 struct cbb_softc *sc = device_get_softc(brdev);
948 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE)))
951 err = cbb_do_power(brdev);
954 cbb_cardbus_reset(brdev);
959 cbb_cardbus_power_disable_socket(device_t brdev, device_t child)
961 cbb_power(brdev, CARD_OFF);
962 cbb_cardbus_reset(brdev);
965 /************************************************************************/
966 /* CardBus Resource */
967 /************************************************************************/
970 cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end)
975 if ((win < 0) || (win > 1)) {
977 "cbb_cardbus_io_open: window out of range %d\n", win));
981 basereg = win * 8 + CBBR_IOBASE0;
982 limitreg = win * 8 + CBBR_IOLIMIT0;
984 pci_write_config(brdev, basereg, start, 4);
985 pci_write_config(brdev, limitreg, end, 4);
990 cbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end)
995 if ((win < 0) || (win > 1)) {
997 "cbb_cardbus_mem_open: window out of range %d\n", win));
1001 basereg = win*8 + CBBR_MEMBASE0;
1002 limitreg = win*8 + CBBR_MEMLIMIT0;
1004 pci_write_config(brdev, basereg, start, 4);
1005 pci_write_config(brdev, limitreg, end, 4);
1009 #define START_NONE 0xffffffff
1013 cbb_cardbus_auto_open(struct cbb_softc *sc, int type)
1017 struct cbb_reslist *rle;
1021 starts[0] = starts[1] = START_NONE;
1022 ends[0] = ends[1] = END_NONE;
1024 if (type == SYS_RES_MEMORY)
1025 align = CBB_MEMALIGN;
1026 else if (type == SYS_RES_IOPORT)
1027 align = CBB_IOALIGN;
1031 SLIST_FOREACH(rle, &sc->rl, link) {
1032 if (rle->type != type)
1034 if (rle->res == NULL)
1036 if (!(rman_get_flags(rle->res) & RF_ACTIVE))
1038 if (rman_get_flags(rle->res) & RF_PREFETCHABLE)
1042 if (rman_get_start(rle->res) < starts[i])
1043 starts[i] = rman_get_start(rle->res);
1044 if (rman_get_end(rle->res) > ends[i])
1045 ends[i] = rman_get_end(rle->res);
1047 for (i = 0; i < 2; i++) {
1048 if (starts[i] == START_NONE)
1050 starts[i] &= ~(align - 1);
1051 ends[i] = ((ends[i] + align - 1) & ~(align - 1)) - 1;
1053 if (starts[0] != START_NONE && starts[1] != START_NONE) {
1054 if (starts[0] < starts[1]) {
1055 if (ends[0] > starts[1]) {
1056 device_printf(sc->dev, "Overlapping ranges"
1057 " for prefetch and non-prefetch memory\n");
1061 if (ends[1] > starts[0]) {
1062 device_printf(sc->dev, "Overlapping ranges"
1063 " for prefetch and non-prefetch memory\n");
1069 if (type == SYS_RES_MEMORY) {
1070 cbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]);
1071 cbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]);
1072 reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2);
1073 reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0 |
1074 CBBM_BRIDGECTRL_PREFETCH_1);
1075 if (starts[1] != START_NONE)
1076 reg |= CBBM_BRIDGECTRL_PREFETCH_1;
1077 pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2);
1079 device_printf(sc->dev, "Opening memory:\n");
1080 if (starts[0] != START_NONE)
1081 device_printf(sc->dev, "Normal: %#x-%#x\n",
1082 starts[0], ends[0]);
1083 if (starts[1] != START_NONE)
1084 device_printf(sc->dev, "Prefetch: %#x-%#x\n",
1085 starts[1], ends[1]);
1087 } else if (type == SYS_RES_IOPORT) {
1088 cbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]);
1089 cbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]);
1090 if (bootverbose && starts[0] != START_NONE)
1091 device_printf(sc->dev, "Opening I/O: %#x-%#x\n",
1092 starts[0], ends[0]);
1097 cbb_cardbus_activate_resource(device_t brdev, device_t child, int type,
1098 int rid, struct resource *res)
1102 ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child,
1106 cbb_cardbus_auto_open(device_get_softc(brdev), type);
1111 cbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type,
1112 int rid, struct resource *res)
1116 ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child,
1120 cbb_cardbus_auto_open(device_get_softc(brdev), type);
1124 static struct resource *
1125 cbb_cardbus_alloc_resource(device_t brdev, device_t child, int type,
1126 int *rid, u_long start, u_long end, u_long count, u_int flags)
1128 struct cbb_softc *sc = device_get_softc(brdev);
1130 struct resource *res;
1135 tmp = rman_get_start(sc->irq_res);
1136 if (start > tmp || end < tmp || count != 1) {
1137 device_printf(child, "requested interrupt %ld-%ld,"
1138 "count = %ld not supported by cbb\n",
1143 flags |= RF_SHAREABLE;
1145 case SYS_RES_IOPORT:
1146 if (start <= cbb_start_32_io)
1147 start = cbb_start_32_io;
1150 if (count > (1 << RF_ALIGNMENT(flags)))
1151 flags = (flags & ~RF_ALIGNMENT_MASK) |
1152 rman_make_alignment_flags(count);
1154 case SYS_RES_MEMORY:
1155 if (start <= cbb_start_mem)
1156 start = cbb_start_mem;
1159 if (count < CBB_MEMALIGN)
1160 align = CBB_MEMALIGN;
1163 if (align > (1 << RF_ALIGNMENT(flags)))
1164 flags = (flags & ~RF_ALIGNMENT_MASK) |
1165 rman_make_alignment_flags(align);
1168 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
1169 start, end, count, flags & ~RF_ACTIVE);
1171 printf("cbb alloc res fail\n");
1174 cbb_insert_res(sc, res, type, *rid);
1175 if (flags & RF_ACTIVE)
1176 if (bus_activate_resource(child, type, *rid, res) != 0) {
1177 bus_release_resource(child, type, *rid, res);
1185 cbb_cardbus_release_resource(device_t brdev, device_t child, int type,
1186 int rid, struct resource *res)
1188 struct cbb_softc *sc = device_get_softc(brdev);
1191 if (rman_get_flags(res) & RF_ACTIVE) {
1192 error = bus_deactivate_resource(child, type, rid, res);
1196 cbb_remove_res(sc, res);
1197 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
1201 /************************************************************************/
1202 /* PC Card Power Functions */
1203 /************************************************************************/
1206 cbb_pcic_power_enable_socket(device_t brdev, device_t child)
1208 struct cbb_softc *sc = device_get_softc(brdev);
1211 DPRINTF(("cbb_pcic_socket_enable:\n"));
1213 /* power down/up the socket to reset */
1214 err = cbb_do_power(brdev);
1217 exca_reset(&sc->exca[0], child);
1223 cbb_pcic_power_disable_socket(device_t brdev, device_t child)
1225 struct cbb_softc *sc = device_get_softc(brdev);
1227 DPRINTF(("cbb_pcic_socket_disable\n"));
1229 /* Turn off the card's interrupt and leave it in reset, wait 10ms */
1230 exca_putb(&sc->exca[0], EXCA_INTR, 0);
1231 pause("cbbP1", hz / 100);
1233 /* power down the socket */
1234 cbb_power(brdev, CARD_OFF);
1235 exca_putb(&sc->exca[0], EXCA_PWRCTL, 0);
1237 /* wait 300ms until power fails (Tpf). */
1238 pause("cbbP2", hz * 300 / 1000);
1240 /* enable CSC interrupts */
1241 exca_putb(&sc->exca[0], EXCA_INTR, EXCA_INTR_ENABLE);
1244 /************************************************************************/
1246 /************************************************************************/
1249 cbb_power_enable_socket(device_t brdev, device_t child)
1251 struct cbb_softc *sc = device_get_softc(brdev);
1253 if (sc->flags & CBB_16BIT_CARD)
1254 return (cbb_pcic_power_enable_socket(brdev, child));
1256 return (cbb_cardbus_power_enable_socket(brdev, child));
1260 cbb_power_disable_socket(device_t brdev, device_t child)
1262 struct cbb_softc *sc = device_get_softc(brdev);
1263 if (sc->flags & CBB_16BIT_CARD)
1264 cbb_pcic_power_disable_socket(brdev, child);
1266 cbb_cardbus_power_disable_socket(brdev, child);
1270 cbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid,
1271 struct resource *res)
1273 struct cbb_softc *sc = device_get_softc(brdev);
1274 return (exca_activate_resource(&sc->exca[0], child, type, rid, res));
1278 cbb_pcic_deactivate_resource(device_t brdev, device_t child, int type,
1279 int rid, struct resource *res)
1281 struct cbb_softc *sc = device_get_softc(brdev);
1282 return (exca_deactivate_resource(&sc->exca[0], child, type, rid, res));
1285 static struct resource *
1286 cbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid,
1287 u_long start, u_long end, u_long count, u_int flags)
1289 struct resource *res = NULL;
1290 struct cbb_softc *sc = device_get_softc(brdev);
1295 case SYS_RES_MEMORY:
1296 if (start < cbb_start_mem)
1297 start = cbb_start_mem;
1300 if (count < CBB_MEMALIGN)
1301 align = CBB_MEMALIGN;
1304 if (align > (1 << RF_ALIGNMENT(flags)))
1305 flags = (flags & ~RF_ALIGNMENT_MASK) |
1306 rman_make_alignment_flags(align);
1308 case SYS_RES_IOPORT:
1309 if (start < cbb_start_16_io)
1310 start = cbb_start_16_io;
1315 tmp = rman_get_start(sc->irq_res);
1316 if (start > tmp || end < tmp || count != 1) {
1317 device_printf(child, "requested interrupt %ld-%ld,"
1318 "count = %ld not supported by cbb\n",
1322 flags |= RF_SHAREABLE;
1323 start = end = rman_get_start(sc->irq_res);
1326 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
1327 start, end, count, flags & ~RF_ACTIVE);
1330 cbb_insert_res(sc, res, type, *rid);
1331 if (flags & RF_ACTIVE) {
1332 if (bus_activate_resource(child, type, *rid, res) != 0) {
1333 bus_release_resource(child, type, *rid, res);
1342 cbb_pcic_release_resource(device_t brdev, device_t child, int type,
1343 int rid, struct resource *res)
1345 struct cbb_softc *sc = device_get_softc(brdev);
1348 if (rman_get_flags(res) & RF_ACTIVE) {
1349 error = bus_deactivate_resource(child, type, rid, res);
1353 cbb_remove_res(sc, res);
1354 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
1358 /************************************************************************/
1359 /* PC Card methods */
1360 /************************************************************************/
1363 cbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid,
1366 struct cbb_softc *sc = device_get_softc(brdev);
1367 struct resource *res;
1369 if (type != SYS_RES_MEMORY)
1371 res = cbb_find_res(sc, type, rid);
1373 device_printf(brdev,
1374 "set_res_flags: specified rid not found\n");
1377 return (exca_mem_set_flags(&sc->exca[0], res, flags));
1381 cbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid,
1382 uint32_t cardaddr, uint32_t *deltap)
1384 struct cbb_softc *sc = device_get_softc(brdev);
1385 struct resource *res;
1387 res = cbb_find_res(sc, SYS_RES_MEMORY, rid);
1389 device_printf(brdev,
1390 "set_memory_offset: specified rid not found\n");
1393 return (exca_mem_set_offset(&sc->exca[0], res, cardaddr, deltap));
1396 /************************************************************************/
1398 /************************************************************************/
1402 cbb_activate_resource(device_t brdev, device_t child, int type, int rid,
1405 struct cbb_softc *sc = device_get_softc(brdev);
1407 if (sc->flags & CBB_16BIT_CARD)
1408 return (cbb_pcic_activate_resource(brdev, child, type, rid, r));
1410 return (cbb_cardbus_activate_resource(brdev, child, type, rid,
1415 cbb_deactivate_resource(device_t brdev, device_t child, int type,
1416 int rid, struct resource *r)
1418 struct cbb_softc *sc = device_get_softc(brdev);
1420 if (sc->flags & CBB_16BIT_CARD)
1421 return (cbb_pcic_deactivate_resource(brdev, child, type,
1424 return (cbb_cardbus_deactivate_resource(brdev, child, type,
1429 cbb_alloc_resource(device_t brdev, device_t child, int type, int *rid,
1430 u_long start, u_long end, u_long count, u_int flags)
1432 struct cbb_softc *sc = device_get_softc(brdev);
1434 if (sc->flags & CBB_16BIT_CARD)
1435 return (cbb_pcic_alloc_resource(brdev, child, type, rid,
1436 start, end, count, flags));
1438 return (cbb_cardbus_alloc_resource(brdev, child, type, rid,
1439 start, end, count, flags));
1443 cbb_release_resource(device_t brdev, device_t child, int type, int rid,
1446 struct cbb_softc *sc = device_get_softc(brdev);
1448 if (sc->flags & CBB_16BIT_CARD)
1449 return (cbb_pcic_release_resource(brdev, child, type,
1452 return (cbb_cardbus_release_resource(brdev, child, type,
1457 cbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result)
1459 struct cbb_softc *sc = device_get_softc(brdev);
1463 *result = sc->secbus;
1470 cbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value)
1472 struct cbb_softc *sc = device_get_softc(brdev);
1483 cbb_suspend(device_t self)
1486 struct cbb_softc *sc = device_get_softc(self);
1488 error = bus_generic_suspend(self);
1491 cbb_set(sc, CBB_SOCKET_MASK, 0); /* Quiet hardware */
1492 sc->flags &= ~CBB_CARD_OK; /* Card is bogus now */
1497 cbb_resume(device_t self)
1500 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(self);
1504 * Some BIOSes will not save the BARs for the pci chips, so we
1505 * must do it ourselves. If the BAR is reset to 0 for an I/O
1506 * device, it will read back as 0x1, so no explicit test for
1507 * memory devices are needed.
1509 * Note: The PCI bus code should do this automatically for us on
1510 * suspend/resume, but until it does, we have to cope.
1512 pci_write_config(self, CBBR_SOCKBASE, rman_get_start(sc->base_res), 4);
1513 DEVPRINTF((self, "PCI Memory allocated: %08lx\n",
1514 rman_get_start(sc->base_res)));
1518 /* reset interrupt -- Do we really need to do this? */
1519 tmp = cbb_get(sc, CBB_SOCKET_EVENT);
1520 cbb_set(sc, CBB_SOCKET_EVENT, tmp);
1522 /* CSC Interrupt: Card detect interrupt on */
1523 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
1525 /* Signal the thread to wakeup. */
1528 mtx_unlock(&sc->mtx);
1530 error = bus_generic_resume(self);
1536 cbb_child_present(device_t self)
1538 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(self);
1541 sockstate = cbb_get(sc, CBB_SOCKET_STATE);
1542 return (CBB_CARD_PRESENT(sockstate) &&
1543 (sc->flags & CBB_CARD_OK) == CBB_CARD_OK);