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>
87 #include <sys/interrupt.h>
89 #include <sys/malloc.h>
90 #include <sys/mutex.h>
93 #include <sys/sysctl.h>
94 #include <sys/systm.h>
95 #include <machine/bus.h>
96 #include <machine/resource.h>
98 #include <dev/pci/pcireg.h>
99 #include <dev/pci/pcivar.h>
101 #include <dev/pccard/pccardreg.h>
102 #include <dev/pccard/pccardvar.h>
104 #include <dev/exca/excareg.h>
105 #include <dev/exca/excavar.h>
107 #include <dev/pccbb/pccbbreg.h>
108 #include <dev/pccbb/pccbbvar.h>
110 #include "power_if.h"
114 #define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
115 #define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
117 #define PCI_MASK_CONFIG(DEV,REG,MASK,SIZE) \
118 pci_write_config(DEV, REG, pci_read_config(DEV, REG, SIZE) MASK, SIZE)
119 #define PCI_MASK2_CONFIG(DEV,REG,MASK1,MASK2,SIZE) \
120 pci_write_config(DEV, REG, ( \
121 pci_read_config(DEV, REG, SIZE) MASK1) MASK2, SIZE)
123 #define CBB_CARD_PRESENT(s) ((s & CBB_STATE_CD) == 0)
125 #define CBB_START_MEM 0x88000000
126 #define CBB_START_32_IO 0x1000
127 #define CBB_START_16_IO 0x100
129 devclass_t cbb_devclass;
132 SYSCTL_NODE(_hw, OID_AUTO, cbb, CTLFLAG_RD, 0, "CBB parameters");
134 /* There's no way to say TUNEABLE_LONG to get the right types */
135 u_long cbb_start_mem = CBB_START_MEM;
136 TUNABLE_ULONG("hw.cbb.start_memory", &cbb_start_mem);
137 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_memory, CTLFLAG_RW,
138 &cbb_start_mem, CBB_START_MEM,
139 "Starting address for memory allocations");
141 u_long cbb_start_16_io = CBB_START_16_IO;
142 TUNABLE_ULONG("hw.cbb.start_16_io", &cbb_start_16_io);
143 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_16_io, CTLFLAG_RW,
144 &cbb_start_16_io, CBB_START_16_IO,
145 "Starting ioport for 16-bit cards");
147 u_long cbb_start_32_io = CBB_START_32_IO;
148 TUNABLE_ULONG("hw.cbb.start_32_io", &cbb_start_32_io);
149 SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_32_io, CTLFLAG_RW,
150 &cbb_start_32_io, CBB_START_32_IO,
151 "Starting ioport for 32-bit cards");
154 TUNABLE_INT("hw.cbb.debug", &cbb_debug);
155 SYSCTL_ULONG(_hw_cbb, OID_AUTO, debug, CTLFLAG_RW, &cbb_debug, 0,
156 "Verbose cardbus bridge debugging");
158 static void cbb_insert(struct cbb_softc *sc);
159 static void cbb_removal(struct cbb_softc *sc);
160 static uint32_t cbb_detect_voltage(device_t brdev);
161 static void cbb_cardbus_reset(device_t brdev);
162 static int cbb_cardbus_io_open(device_t brdev, int win, uint32_t start,
164 static int cbb_cardbus_mem_open(device_t brdev, int win,
165 uint32_t start, uint32_t end);
166 static void cbb_cardbus_auto_open(struct cbb_softc *sc, int type);
167 static int cbb_cardbus_activate_resource(device_t brdev, device_t child,
168 int type, int rid, struct resource *res);
169 static int cbb_cardbus_deactivate_resource(device_t brdev,
170 device_t child, int type, int rid, struct resource *res);
171 static struct resource *cbb_cardbus_alloc_resource(device_t brdev,
172 device_t child, int type, int *rid, u_long start,
173 u_long end, u_long count, u_int flags);
174 static int cbb_cardbus_release_resource(device_t brdev, device_t child,
175 int type, int rid, struct resource *res);
176 static int cbb_cardbus_power_enable_socket(device_t brdev,
178 static void cbb_cardbus_power_disable_socket(device_t brdev,
180 static int cbb_func_filt(void *arg);
181 static void cbb_func_intr(void *arg);
184 cbb_remove_res(struct cbb_softc *sc, struct resource *res)
186 struct cbb_reslist *rle;
188 SLIST_FOREACH(rle, &sc->rl, link) {
189 if (rle->res == res) {
190 SLIST_REMOVE(&sc->rl, rle, cbb_reslist, link);
197 static struct resource *
198 cbb_find_res(struct cbb_softc *sc, int type, int rid)
200 struct cbb_reslist *rle;
202 SLIST_FOREACH(rle, &sc->rl, link)
203 if (SYS_RES_MEMORY == rle->type && rid == rle->rid)
209 cbb_insert_res(struct cbb_softc *sc, struct resource *res, int type,
212 struct cbb_reslist *rle;
215 * Need to record allocated resource so we can iterate through
218 rle = malloc(sizeof(struct cbb_reslist), M_DEVBUF, M_NOWAIT);
220 panic("cbb_cardbus_alloc_resource: can't record entry!");
224 SLIST_INSERT_HEAD(&sc->rl, rle, link);
228 cbb_destroy_res(struct cbb_softc *sc)
230 struct cbb_reslist *rle;
232 while ((rle = SLIST_FIRST(&sc->rl)) != NULL) {
233 device_printf(sc->dev, "Danger Will Robinson: Resource "
234 "left allocated! This is a bug... "
235 "(rid=%x, type=%d, addr=%lx)\n", rle->rid, rle->type,
236 rman_get_start(rle->res));
237 SLIST_REMOVE_HEAD(&sc->rl, link);
243 * Disable function interrupts by telling the bridge to generate IRQ1
244 * interrupts. These interrupts aren't really generated by the chip, since
245 * IRQ1 is reserved. Some chipsets assert INTA# inappropriately during
246 * initialization, so this helps to work around the problem.
248 * XXX We can't do this workaround for all chipsets, because this
249 * XXX causes interference with the keyboard because somechipsets will
250 * XXX actually signal IRQ1 over their serial interrupt connections to
251 * XXX the south bridge. Disable it it for now.
254 cbb_disable_func_intr(struct cbb_softc *sc)
259 reg = (exca_getb(&sc->exca[0], EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) |
260 EXCA_INTR_IRQ_RESERVED1;
261 exca_putb(&sc->exca[0], EXCA_INTR, reg);
266 * Enable function interrupts. We turn on function interrupts when the card
267 * requests an interrupt. The PCMCIA standard says that we should set
268 * the lower 4 bits to 0 to route via PCI. Note: we call this for both
269 * CardBus and R2 (PC Card) cases, but it should have no effect on CardBus
273 cbb_enable_func_intr(struct cbb_softc *sc)
277 reg = (exca_getb(&sc->exca[0], EXCA_INTR) & ~EXCA_INTR_IRQ_MASK) |
279 exca_putb(&sc->exca[0], EXCA_INTR, reg);
283 cbb_detach(device_t brdev)
285 struct cbb_softc *sc = device_get_softc(brdev);
287 int tmp, tries, error, numdevs;
290 * Before we delete the children (which we have to do because
291 * attach doesn't check for children busses correctly), we have
292 * to detach the children. Even if we didn't need to delete the
293 * children, we have to detach them.
295 error = bus_generic_detach(brdev);
300 * Since the attach routine doesn't search for children before it
301 * attaches them to this device, we must delete them here in order
302 * for the kldload/unload case to work. If we failed to do that, then
303 * we'd get duplicate devices when cbb.ko was reloaded.
307 error = device_get_children(brdev, &devlist, &numdevs);
311 * Try hard to cope with low memory.
313 if (error == ENOMEM) {
314 pause("cbbnomem", 1);
317 } while (tries-- > 0);
318 for (tmp = 0; tmp < numdevs; tmp++)
319 device_delete_child(brdev, devlist[tmp]);
320 free(devlist, M_TEMP);
322 /* Turn off the interrupts */
323 cbb_set(sc, CBB_SOCKET_MASK, 0);
325 /* reset 16-bit pcmcia bus */
326 exca_clrb(&sc->exca[0], EXCA_INTR, EXCA_INTR_RESET);
329 cbb_power(brdev, CARD_OFF);
331 /* Ack the interrupt */
332 cbb_set(sc, CBB_SOCKET_EVENT, 0xffffffff);
335 * Wait for the thread to die. kthread_exit will do a wakeup
336 * on the event thread's struct thread * so that we know it is
337 * safe to proceed. IF the thread is running, set the please
338 * die flag and wait for it to comply. Since the wakeup on
339 * the event thread happens only in kthread_exit, we don't
342 bus_teardown_intr(brdev, sc->irq_res, sc->intrhand);
344 sc->flags |= CBB_KTHREAD_DONE;
345 while (sc->flags & CBB_KTHREAD_RUNNING) {
346 DEVPRINTF((sc->dev, "Waiting for thread to die\n"));
347 cv_broadcast(&sc->cv);
348 msleep(sc->event_thread, &sc->mtx, PWAIT, "cbbun", 0);
350 mtx_unlock(&sc->mtx);
352 bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res);
353 bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
355 mtx_destroy(&sc->mtx);
357 cv_destroy(&sc->powercv);
362 cbb_setup_intr(device_t dev, device_t child, struct resource *irq,
363 int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
366 struct cbb_intrhand *ih;
367 struct cbb_softc *sc = device_get_softc(dev);
370 if (filt == NULL && intr == NULL)
372 ih = malloc(sizeof(struct cbb_intrhand), M_DEVBUF, M_NOWAIT);
381 * XXX need to turn on ISA interrupts, if we ever support them, but
382 * XXX for now that's all we need to do.
384 err = BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags,
385 filt ? cbb_func_filt : NULL, intr ? cbb_func_intr : NULL, ih,
391 cbb_enable_func_intr(sc);
392 sc->flags |= CBB_CARD_OK;
397 cbb_teardown_intr(device_t dev, device_t child, struct resource *irq,
400 struct cbb_intrhand *ih;
403 /* XXX Need to do different things for ISA interrupts. */
404 ih = (struct cbb_intrhand *) cookie;
405 err = BUS_TEARDOWN_INTR(device_get_parent(dev), child, irq,
415 cbb_driver_added(device_t brdev, driver_t *driver)
417 struct cbb_softc *sc = device_get_softc(brdev);
424 DEVICE_IDENTIFY(driver, brdev);
425 tmp = device_get_children(brdev, &devlist, &numdevs);
427 device_printf(brdev, "Cannot get children list, no reprobe\n");
430 for (tmp = 0; tmp < numdevs; tmp++) {
432 if (device_get_state(dev) == DS_NOTPRESENT &&
433 device_probe_and_attach(dev) == 0)
436 free(devlist, M_TEMP);
441 mtx_unlock(&sc->mtx);
446 cbb_child_detached(device_t brdev, device_t child)
448 struct cbb_softc *sc = device_get_softc(brdev);
450 /* I'm not sure we even need this */
451 if (child != sc->cbdev && child != sc->exca[0].pccarddev)
452 device_printf(brdev, "Unknown child detached: %s\n",
453 device_get_nameunit(child));
456 /************************************************************************/
458 /************************************************************************/
461 cbb_event_thread(void *arg)
463 struct cbb_softc *sc = arg;
469 sc->flags |= CBB_KTHREAD_RUNNING;
470 while ((sc->flags & CBB_KTHREAD_DONE) == 0) {
471 mtx_unlock(&sc->mtx);
473 * We take out Giant here because we need it deep,
474 * down in the bowels of the vm system for mapping the
475 * memory we need to read the CIS. In addition, since
476 * we are adding/deleting devices from the dev tree,
477 * and that code isn't MP safe, we have to hold Giant.
480 status = cbb_get(sc, CBB_SOCKET_STATE);
481 DPRINTF(("Status is 0x%x\n", status));
482 if (!CBB_CARD_PRESENT(status)) {
483 not_a_card = 0; /* We know card type */
485 } else if (status & CBB_STATE_NOT_A_CARD) {
487 * Up to 10 times, try to rescan the card when we see
488 * NOT_A_CARD. 10 is somehwat arbitrary. When this
489 * pathology hits, there's a ~40% chance each try will
490 * fail. 10 tries takes about 5s and results in a
491 * 99.99% certainty of the results.
493 if (not_a_card++ < 10) {
495 "Not a card bit set, rescanning\n"));
496 cbb_setb(sc, CBB_SOCKET_FORCE, CBB_FORCE_CV_TEST);
498 device_printf(sc->dev,
499 "Can't determine card type\n");
502 not_a_card = 0; /* We know card type */
508 * Wait until it has been 250ms since the last time we
509 * get an interrupt. We handle the rest of the interrupt
510 * at the top of the loop. Although we clear the bit in the
511 * ISR, we signal sc->cv from the detach path after we've
512 * set the CBB_KTHREAD_DONE bit, so we can't do a simple
515 * In our ISR, we turn off the card changed interrupt. Turn
516 * them back on here before we wait for them to happen. We
517 * turn them on/off so that we can tolerate a large latency
518 * between the time we signal cbb_event_thread and it gets
522 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
523 cv_wait(&sc->cv, &sc->mtx);
525 while (err != EWOULDBLOCK &&
526 (sc->flags & CBB_KTHREAD_DONE) == 0)
527 err = cv_timedwait(&sc->cv, &sc->mtx, hz / 4);
529 DEVPRINTF((sc->dev, "Thread terminating\n"));
530 sc->flags &= ~CBB_KTHREAD_RUNNING;
531 mtx_unlock(&sc->mtx);
535 /************************************************************************/
537 /************************************************************************/
540 cbb_insert(struct cbb_softc *sc)
542 uint32_t sockevent, sockstate;
544 sockevent = cbb_get(sc, CBB_SOCKET_EVENT);
545 sockstate = cbb_get(sc, CBB_SOCKET_STATE);
547 DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n",
548 sockevent, sockstate));
550 if (sockstate & CBB_STATE_R2_CARD) {
551 if (device_is_attached(sc->exca[0].pccarddev)) {
552 sc->flags |= CBB_16BIT_CARD;
553 exca_insert(&sc->exca[0]);
555 device_printf(sc->dev,
556 "16-bit card inserted, but no pccard bus.\n");
558 } else if (sockstate & CBB_STATE_CB_CARD) {
559 if (device_is_attached(sc->cbdev)) {
560 sc->flags &= ~CBB_16BIT_CARD;
561 CARD_ATTACH_CARD(sc->cbdev);
563 device_printf(sc->dev,
564 "CardBus card inserted, but no cardbus bus.\n");
568 * We should power the card down, and try again a couple of
569 * times if this happens. XXX
571 device_printf(sc->dev, "Unsupported card type detected\n");
576 cbb_removal(struct cbb_softc *sc)
578 sc->flags &= ~CBB_CARD_OK;
579 if (sc->flags & CBB_16BIT_CARD) {
580 exca_removal(&sc->exca[0]);
582 if (device_is_attached(sc->cbdev))
583 CARD_DETACH_CARD(sc->cbdev);
588 /************************************************************************/
589 /* Interrupt Handler */
590 /************************************************************************/
593 * Since we touch hardware in the worst case, we don't need to use atomic ops
594 * on the CARD_OK tests. They would save us a trip to the hardware if CARD_OK
595 * was recently cleared and the caches haven't updated yet. However, an
596 * atomic op costs between 100-200 CPU cycles. On a 3GHz machine, this is
597 * about 33-66ns, whereas a trip the the hardware is about that. On slower
598 * machines, the cost is even higher, so the trip to the hardware is cheaper
599 * and achieves the same ends that a fully locked operation would give us.
601 * This is a separate routine because we'd have to use locking and/or other
602 * synchronization in cbb_intr to do this there. That would be even more
605 * I need to investigate what this means for a SMP machine with multiple CPUs
606 * servicing the ISR when an eject happens. In the case of a dirty eject, CD
607 * glitches and we might read 'card present' from the hardware due to this
608 * jitter. If we assumed that cbb_intr() ran before cbb_func_intr(), we could
609 * just check the SOCKET_MASK register and if CD changes were clear there,
610 * then we'd know the card was gone.
613 cbb_func_filt(void *arg)
615 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg;
616 struct cbb_softc *sc = ih->sc;
619 * Make sure that the card is really there.
621 if ((sc->flags & CBB_CARD_OK) == 0)
622 return (FILTER_STRAY);
623 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) {
624 sc->flags &= ~CBB_CARD_OK;
625 return (FILTER_HANDLED);
629 * nb: don't have to check for giant or not, since that's done in the
630 * ISR dispatch and one can't hold Giant in a filter anyway...
632 return ((*ih->filt)(ih->arg));
636 cbb_func_intr(void *arg)
638 struct cbb_intrhand *ih = (struct cbb_intrhand *)arg;
639 struct cbb_softc *sc = ih->sc;
642 * While this check may seem redundant, it helps close a race
643 * condition. If the card is ejected after the filter runs, but
644 * before this ISR can be scheduled, then we need to do the same
645 * filtering to prevent the card's ISR from being called. One could
646 * argue that the card's ISR should be able to cope, but experience
647 * has shown they can't always. This mitigates the problem by making
648 * the race quite a bit smaller. Properly written client ISRs should
649 * cope with the card going away in the middle of the ISR. We assume
650 * that drivers that are sophisticated enough to use filters don't
651 * need our protection. This also allows us to ensure they *ARE*
652 * called if their filter said they needed to be called.
654 if (ih->filt == NULL) {
655 if ((sc->flags & CBB_CARD_OK) == 0)
657 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) {
658 sc->flags &= ~CBB_CARD_OK;
664 * Call the registered ithread interrupt handler. This entire routine
665 * will be called with Giant if this isn't an MP safe driver, or not
666 * if it is. Either way, we don't have to worry.
671 /************************************************************************/
672 /* Generic Power functions */
673 /************************************************************************/
676 cbb_detect_voltage(device_t brdev)
678 struct cbb_softc *sc = device_get_softc(brdev);
680 uint32_t vol = CARD_UKN_CARD;
682 psr = cbb_get(sc, CBB_SOCKET_STATE);
684 if (psr & CBB_STATE_5VCARD && psr & CBB_STATE_5VSOCK)
686 if (psr & CBB_STATE_3VCARD && psr & CBB_STATE_3VSOCK)
688 if (psr & CBB_STATE_XVCARD && psr & CBB_STATE_XVSOCK)
690 if (psr & CBB_STATE_YVCARD && psr & CBB_STATE_YVSOCK)
697 cbb_o2micro_power_hack(struct cbb_softc *sc)
702 * Issue #2: INT# not qualified with IRQ Routing Bit. An
703 * unexpected PCI INT# may be generated during PC Card
704 * initialization even with the IRQ Routing Bit Set with some
707 * This is a two part issue. The first part is that some of
708 * our older controllers have an issue in which the slot's PCI
709 * INT# is NOT qualified by the IRQ routing bit (PCI reg. 3Eh
710 * bit 7). Regardless of the IRQ routing bit, if NO ISA IRQ
711 * is selected (ExCA register 03h bits 3:0, of the slot, are
712 * cleared) we will generate INT# if IREQ# is asserted. The
713 * second part is because some PC Cards prematurally assert
714 * IREQ# before the ExCA registers are fully programmed. This
715 * in turn asserts INT# because ExCA register 03h bits 3:0
716 * (ISA IRQ Select) are not yet programmed.
718 * The fix for this issue, which will work for any controller
719 * (old or new), is to set ExCA register 03h bits 3:0 = 0001b
720 * (select IRQ1), of the slot, before turning on slot power.
721 * Selecting IRQ1 will result in INT# NOT being asserted
722 * (because IRQ1 is selected), and IRQ1 won't be asserted
723 * because our controllers don't generate IRQ1.
725 * Other, non O2Micro controllers will generate irq 1 in some
726 * situations, so we can't do this hack for everybody. Reports of
727 * keyboard controller's interrupts being suppressed occurred when
730 reg = exca_getb(&sc->exca[0], EXCA_INTR);
731 exca_putb(&sc->exca[0], EXCA_INTR, (reg & 0xf0) | 1);
736 * Restore the damage that cbb_o2micro_power_hack does to EXCA_INTR so
737 * we don't have an interrupt storm on power on. This has the efect of
738 * disabling card status change interrupts for the duration of poweron.
741 cbb_o2micro_power_hack2(struct cbb_softc *sc, uint8_t reg)
743 exca_putb(&sc->exca[0], EXCA_INTR, reg);
747 cbb_power(device_t brdev, int volts)
749 uint32_t status, sock_ctrl, reg_ctrl, mask;
750 struct cbb_softc *sc = device_get_softc(brdev);
756 sock_ctrl = cbb_get(sc, CBB_SOCKET_CONTROL);
758 sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
759 switch (volts & CARD_VCCMASK) {
761 sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V;
765 sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V;
769 sock_ctrl |= CBB_SOCKET_CTRL_VCC_XV;
773 sock_ctrl |= CBB_SOCKET_CTRL_VCC_YV;
779 return (0); /* power NEVER changed */
783 sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
784 sock_ctrl |= ((sock_ctrl >> 4) & 0x07);
786 if (cbb_get(sc, CBB_SOCKET_CONTROL) == sock_ctrl)
787 return (1); /* no change necessary */
788 DEVPRINTF((sc->dev, "cbb_power: %dV\n", volts));
789 if (volts != 0 && sc->chipset == CB_O2MICRO)
790 reg = cbb_o2micro_power_hack(sc);
793 * We have to mask the card change detect interrupt while
794 * we're messing with the power. It is allowed to bounce
795 * while we're messing with power as things settle down. In
796 * addition, we mask off the card's function interrupt by
797 * routing it via the ISA bus. This bit generally only
798 * affects 16-bit cards. Some bridges allow one to set
799 * another bit to have it also affect 32-bit cards. Since
800 * 32-bit cards are required to be better behaved, we don't
801 * bother to get into those bridge specific features.
803 mask = cbb_get(sc, CBB_SOCKET_MASK);
804 mask |= CBB_SOCKET_MASK_POWER;
805 mask &= ~CBB_SOCKET_MASK_CD;
806 cbb_set(sc, CBB_SOCKET_MASK, mask);
807 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
808 |CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2);
809 cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl);
814 * We have a shortish timeout of 500ms here. Some
815 * bridges do not generate a POWER_CYCLE event for
816 * 16-bit cards. In those cases, we have to cope the
817 * best we can, and having only a short delay is
818 * better than the alternatives.
821 while (!(cbb_get(sc, CBB_SOCKET_STATE) & CBB_STATE_POWER_CYCLE) &&
822 cnt == sc->powerintr && sane-- > 0)
823 cv_timedwait(&sc->powercv, &sc->mtx, hz / 20);
824 mtx_unlock(&sc->mtx);
826 * The TOPIC95B requires a little bit extra time to get
827 * its act together, so delay for an additional 100ms. Also
828 * as documented below, it doesn't seem to set the POWER_CYCLE
829 * bit, so don't whine if it never came on.
831 if (sc->chipset == CB_TOPIC95) {
832 pause("cbb95B", hz / 10);
833 } else if (sane <= 0) {
834 device_printf(sc->dev, "power timeout, doom?\n");
839 * After the power is good, we can turn off the power interrupt.
840 * However, the PC Card standard says that we must delay turning the
841 * CD bit back on for a bit to allow for bouncyness on power down
842 * (recall that we don't wait above for a power down, since we don't
843 * get an interrupt for that). We're called either from the suspend
844 * code in which case we don't want to turn card change on again, or
845 * we're called from the card insertion code, in which case the cbb
846 * thread will turn it on for us before it waits to be woken by a
849 * NB: Topic95B doesn't set the power cycle bit. we assume that
850 * both it and the TOPIC95 behave the same.
852 cbb_clrb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_POWER);
853 status = cbb_get(sc, CBB_SOCKET_STATE);
854 if (on && sc->chipset != CB_TOPIC95) {
855 if ((status & CBB_STATE_POWER_CYCLE) == 0)
856 device_printf(sc->dev, "Power not on?\n");
858 if (status & CBB_STATE_BAD_VCC_REQ) {
859 device_printf(sc->dev, "Bad Vcc requested\n");
860 /* XXX Do we want to do something to mitigate things here? */
863 if (sc->chipset == CB_TOPIC97) {
864 reg_ctrl = pci_read_config(sc->dev, TOPIC_REG_CTRL, 4);
865 reg_ctrl &= ~TOPIC97_REG_CTRL_TESTMODE;
867 reg_ctrl |= TOPIC97_REG_CTRL_CLKRUN_ENA;
869 reg_ctrl &= ~TOPIC97_REG_CTRL_CLKRUN_ENA;
870 pci_write_config(sc->dev, TOPIC_REG_CTRL, reg_ctrl, 4);
872 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
873 & ~CBBM_BRIDGECTRL_INTR_IREQ_ISA_EN, 2);
876 if (volts != 0 && sc->chipset == CB_O2MICRO)
877 cbb_o2micro_power_hack2(sc, reg);
882 cbb_current_voltage(device_t brdev)
884 struct cbb_softc *sc = device_get_softc(brdev);
887 ctrl = cbb_get(sc, CBB_SOCKET_CONTROL);
888 switch (ctrl & CBB_SOCKET_CTRL_VCCMASK) {
889 case CBB_SOCKET_CTRL_VCC_5V:
891 case CBB_SOCKET_CTRL_VCC_3V:
893 case CBB_SOCKET_CTRL_VCC_XV:
895 case CBB_SOCKET_CTRL_VCC_YV:
902 * detect the voltage for the card, and set it. Since the power
903 * used is the square of the voltage, lower voltages is a big win
904 * and what Windows does (and what Microsoft prefers). The MS paper
905 * also talks about preferring the CIS entry as well, but that has
906 * to be done elsewhere. We also optimize power sequencing here
907 * and don't change things if we're already powered up at a supported
910 * In addition, we power up with OE disabled. We'll set it later
911 * in the power up sequence.
914 cbb_do_power(device_t brdev)
916 struct cbb_softc *sc = device_get_softc(brdev);
917 uint32_t voltage, curpwr;
920 /* Don't enable OE (output enable) until power stable */
921 exca_clrb(&sc->exca[0], EXCA_PWRCTL, EXCA_PWRCTL_OE);
923 voltage = cbb_detect_voltage(brdev);
924 curpwr = cbb_current_voltage(brdev);
925 status = cbb_get(sc, CBB_SOCKET_STATE);
926 if ((status & CBB_STATE_POWER_CYCLE) && (voltage & curpwr))
928 /* Prefer lowest voltage supported */
929 cbb_power(brdev, CARD_OFF);
930 if (voltage & CARD_YV_CARD)
931 cbb_power(brdev, CARD_VCC(YV));
932 else if (voltage & CARD_XV_CARD)
933 cbb_power(brdev, CARD_VCC(XV));
934 else if (voltage & CARD_3V_CARD)
935 cbb_power(brdev, CARD_VCC(3));
936 else if (voltage & CARD_5V_CARD)
937 cbb_power(brdev, CARD_VCC(5));
939 device_printf(brdev, "Unknown card voltage\n");
945 /************************************************************************/
946 /* CardBus power functions */
947 /************************************************************************/
950 cbb_cardbus_reset(device_t brdev)
952 struct cbb_softc *sc = device_get_softc(brdev);
956 * 20ms is necessary for most bridges. For some reason, the Ricoh
957 * RF5C47x bridges need 400ms.
959 delay = sc->chipset == CB_RF5C47X ? 400 : 20;
961 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
963 pause("cbbP3", hz * delay / 1000);
965 /* If a card exists, unreset it! */
966 if (CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE))) {
967 PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
968 &~CBBM_BRIDGECTRL_RESET, 2);
969 pause("cbbP4", hz * delay / 1000);
974 cbb_cardbus_power_enable_socket(device_t brdev, device_t child)
976 struct cbb_softc *sc = device_get_softc(brdev);
979 if (!CBB_CARD_PRESENT(cbb_get(sc, CBB_SOCKET_STATE)))
982 err = cbb_do_power(brdev);
985 cbb_cardbus_reset(brdev);
990 cbb_cardbus_power_disable_socket(device_t brdev, device_t child)
992 cbb_power(brdev, CARD_OFF);
993 cbb_cardbus_reset(brdev);
996 /************************************************************************/
997 /* CardBus Resource */
998 /************************************************************************/
1001 cbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end)
1006 if ((win < 0) || (win > 1)) {
1008 "cbb_cardbus_io_open: window out of range %d\n", win));
1012 basereg = win * 8 + CBBR_IOBASE0;
1013 limitreg = win * 8 + CBBR_IOLIMIT0;
1015 pci_write_config(brdev, basereg, start, 4);
1016 pci_write_config(brdev, limitreg, end, 4);
1021 cbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end)
1026 if ((win < 0) || (win > 1)) {
1028 "cbb_cardbus_mem_open: window out of range %d\n", win));
1032 basereg = win*8 + CBBR_MEMBASE0;
1033 limitreg = win*8 + CBBR_MEMLIMIT0;
1035 pci_write_config(brdev, basereg, start, 4);
1036 pci_write_config(brdev, limitreg, end, 4);
1040 #define START_NONE 0xffffffff
1044 cbb_cardbus_auto_open(struct cbb_softc *sc, int type)
1048 struct cbb_reslist *rle;
1052 starts[0] = starts[1] = START_NONE;
1053 ends[0] = ends[1] = END_NONE;
1055 if (type == SYS_RES_MEMORY)
1056 align = CBB_MEMALIGN;
1057 else if (type == SYS_RES_IOPORT)
1058 align = CBB_IOALIGN;
1062 SLIST_FOREACH(rle, &sc->rl, link) {
1063 if (rle->type != type)
1065 if (rle->res == NULL)
1067 if (!(rman_get_flags(rle->res) & RF_ACTIVE))
1069 if (rman_get_flags(rle->res) & RF_PREFETCHABLE)
1073 if (rman_get_start(rle->res) < starts[i])
1074 starts[i] = rman_get_start(rle->res);
1075 if (rman_get_end(rle->res) > ends[i])
1076 ends[i] = rman_get_end(rle->res);
1078 for (i = 0; i < 2; i++) {
1079 if (starts[i] == START_NONE)
1081 starts[i] &= ~(align - 1);
1082 ends[i] = ((ends[i] + align - 1) & ~(align - 1)) - 1;
1084 if (starts[0] != START_NONE && starts[1] != START_NONE) {
1085 if (starts[0] < starts[1]) {
1086 if (ends[0] > starts[1]) {
1087 device_printf(sc->dev, "Overlapping ranges"
1088 " for prefetch and non-prefetch memory\n");
1092 if (ends[1] > starts[0]) {
1093 device_printf(sc->dev, "Overlapping ranges"
1094 " for prefetch and non-prefetch memory\n");
1100 if (type == SYS_RES_MEMORY) {
1101 cbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]);
1102 cbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]);
1103 reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2);
1104 reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0 |
1105 CBBM_BRIDGECTRL_PREFETCH_1);
1106 if (starts[1] != START_NONE)
1107 reg |= CBBM_BRIDGECTRL_PREFETCH_1;
1108 pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2);
1110 device_printf(sc->dev, "Opening memory:\n");
1111 if (starts[0] != START_NONE)
1112 device_printf(sc->dev, "Normal: %#x-%#x\n",
1113 starts[0], ends[0]);
1114 if (starts[1] != START_NONE)
1115 device_printf(sc->dev, "Prefetch: %#x-%#x\n",
1116 starts[1], ends[1]);
1118 } else if (type == SYS_RES_IOPORT) {
1119 cbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]);
1120 cbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]);
1121 if (bootverbose && starts[0] != START_NONE)
1122 device_printf(sc->dev, "Opening I/O: %#x-%#x\n",
1123 starts[0], ends[0]);
1128 cbb_cardbus_activate_resource(device_t brdev, device_t child, int type,
1129 int rid, struct resource *res)
1133 ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child,
1137 cbb_cardbus_auto_open(device_get_softc(brdev), type);
1142 cbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type,
1143 int rid, struct resource *res)
1147 ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child,
1151 cbb_cardbus_auto_open(device_get_softc(brdev), type);
1155 static struct resource *
1156 cbb_cardbus_alloc_resource(device_t brdev, device_t child, int type,
1157 int *rid, u_long start, u_long end, u_long count, u_int flags)
1159 struct cbb_softc *sc = device_get_softc(brdev);
1161 struct resource *res;
1166 tmp = rman_get_start(sc->irq_res);
1167 if (start > tmp || end < tmp || count != 1) {
1168 device_printf(child, "requested interrupt %ld-%ld,"
1169 "count = %ld not supported by cbb\n",
1174 flags |= RF_SHAREABLE;
1176 case SYS_RES_IOPORT:
1177 if (start <= cbb_start_32_io)
1178 start = cbb_start_32_io;
1181 if (count > (1 << RF_ALIGNMENT(flags)))
1182 flags = (flags & ~RF_ALIGNMENT_MASK) |
1183 rman_make_alignment_flags(count);
1185 case SYS_RES_MEMORY:
1186 if (start <= cbb_start_mem)
1187 start = cbb_start_mem;
1190 if (count < CBB_MEMALIGN)
1191 align = CBB_MEMALIGN;
1194 if (align > (1 << RF_ALIGNMENT(flags)))
1195 flags = (flags & ~RF_ALIGNMENT_MASK) |
1196 rman_make_alignment_flags(align);
1199 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
1200 start, end, count, flags & ~RF_ACTIVE);
1202 printf("cbb alloc res fail type %d rid %x\n", type, *rid);
1205 cbb_insert_res(sc, res, type, *rid);
1206 if (flags & RF_ACTIVE)
1207 if (bus_activate_resource(child, type, *rid, res) != 0) {
1208 bus_release_resource(child, type, *rid, res);
1216 cbb_cardbus_release_resource(device_t brdev, device_t child, int type,
1217 int rid, struct resource *res)
1219 struct cbb_softc *sc = device_get_softc(brdev);
1222 if (rman_get_flags(res) & RF_ACTIVE) {
1223 error = bus_deactivate_resource(child, type, rid, res);
1227 cbb_remove_res(sc, res);
1228 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
1232 /************************************************************************/
1233 /* PC Card Power Functions */
1234 /************************************************************************/
1237 cbb_pcic_power_enable_socket(device_t brdev, device_t child)
1239 struct cbb_softc *sc = device_get_softc(brdev);
1242 DPRINTF(("cbb_pcic_socket_enable:\n"));
1244 /* power down/up the socket to reset */
1245 err = cbb_do_power(brdev);
1248 exca_reset(&sc->exca[0], child);
1254 cbb_pcic_power_disable_socket(device_t brdev, device_t child)
1256 struct cbb_softc *sc = device_get_softc(brdev);
1258 DPRINTF(("cbb_pcic_socket_disable\n"));
1260 /* Turn off the card's interrupt and leave it in reset, wait 10ms */
1261 exca_putb(&sc->exca[0], EXCA_INTR, 0);
1262 pause("cbbP1", hz / 100);
1264 /* power down the socket */
1265 cbb_power(brdev, CARD_OFF);
1266 exca_putb(&sc->exca[0], EXCA_PWRCTL, 0);
1268 /* wait 300ms until power fails (Tpf). */
1269 pause("cbbP2", hz * 300 / 1000);
1271 /* enable CSC interrupts */
1272 exca_putb(&sc->exca[0], EXCA_INTR, EXCA_INTR_ENABLE);
1275 /************************************************************************/
1277 /************************************************************************/
1280 cbb_power_enable_socket(device_t brdev, device_t child)
1282 struct cbb_softc *sc = device_get_softc(brdev);
1284 if (sc->flags & CBB_16BIT_CARD)
1285 return (cbb_pcic_power_enable_socket(brdev, child));
1287 return (cbb_cardbus_power_enable_socket(brdev, child));
1291 cbb_power_disable_socket(device_t brdev, device_t child)
1293 struct cbb_softc *sc = device_get_softc(brdev);
1294 if (sc->flags & CBB_16BIT_CARD)
1295 cbb_pcic_power_disable_socket(brdev, child);
1297 cbb_cardbus_power_disable_socket(brdev, child);
1301 cbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid,
1302 struct resource *res)
1304 struct cbb_softc *sc = device_get_softc(brdev);
1305 return (exca_activate_resource(&sc->exca[0], child, type, rid, res));
1309 cbb_pcic_deactivate_resource(device_t brdev, device_t child, int type,
1310 int rid, struct resource *res)
1312 struct cbb_softc *sc = device_get_softc(brdev);
1313 return (exca_deactivate_resource(&sc->exca[0], child, type, rid, res));
1316 static struct resource *
1317 cbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid,
1318 u_long start, u_long end, u_long count, u_int flags)
1320 struct resource *res = NULL;
1321 struct cbb_softc *sc = device_get_softc(brdev);
1326 case SYS_RES_MEMORY:
1327 if (start < cbb_start_mem)
1328 start = cbb_start_mem;
1331 if (count < CBB_MEMALIGN)
1332 align = CBB_MEMALIGN;
1335 if (align > (1 << RF_ALIGNMENT(flags)))
1336 flags = (flags & ~RF_ALIGNMENT_MASK) |
1337 rman_make_alignment_flags(align);
1339 case SYS_RES_IOPORT:
1340 if (start < cbb_start_16_io)
1341 start = cbb_start_16_io;
1346 tmp = rman_get_start(sc->irq_res);
1347 if (start > tmp || end < tmp || count != 1) {
1348 device_printf(child, "requested interrupt %ld-%ld,"
1349 "count = %ld not supported by cbb\n",
1353 flags |= RF_SHAREABLE;
1354 start = end = rman_get_start(sc->irq_res);
1357 res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
1358 start, end, count, flags & ~RF_ACTIVE);
1361 cbb_insert_res(sc, res, type, *rid);
1362 if (flags & RF_ACTIVE) {
1363 if (bus_activate_resource(child, type, *rid, res) != 0) {
1364 bus_release_resource(child, type, *rid, res);
1373 cbb_pcic_release_resource(device_t brdev, device_t child, int type,
1374 int rid, struct resource *res)
1376 struct cbb_softc *sc = device_get_softc(brdev);
1379 if (rman_get_flags(res) & RF_ACTIVE) {
1380 error = bus_deactivate_resource(child, type, rid, res);
1384 cbb_remove_res(sc, res);
1385 return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
1389 /************************************************************************/
1390 /* PC Card methods */
1391 /************************************************************************/
1394 cbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid,
1397 struct cbb_softc *sc = device_get_softc(brdev);
1398 struct resource *res;
1400 if (type != SYS_RES_MEMORY)
1402 res = cbb_find_res(sc, type, rid);
1404 device_printf(brdev,
1405 "set_res_flags: specified rid not found\n");
1408 return (exca_mem_set_flags(&sc->exca[0], res, flags));
1412 cbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid,
1413 uint32_t cardaddr, uint32_t *deltap)
1415 struct cbb_softc *sc = device_get_softc(brdev);
1416 struct resource *res;
1418 res = cbb_find_res(sc, SYS_RES_MEMORY, rid);
1420 device_printf(brdev,
1421 "set_memory_offset: specified rid not found\n");
1424 return (exca_mem_set_offset(&sc->exca[0], res, cardaddr, deltap));
1427 /************************************************************************/
1429 /************************************************************************/
1433 cbb_activate_resource(device_t brdev, device_t child, int type, int rid,
1436 struct cbb_softc *sc = device_get_softc(brdev);
1438 if (sc->flags & CBB_16BIT_CARD)
1439 return (cbb_pcic_activate_resource(brdev, child, type, rid, r));
1441 return (cbb_cardbus_activate_resource(brdev, child, type, rid,
1446 cbb_deactivate_resource(device_t brdev, device_t child, int type,
1447 int rid, struct resource *r)
1449 struct cbb_softc *sc = device_get_softc(brdev);
1451 if (sc->flags & CBB_16BIT_CARD)
1452 return (cbb_pcic_deactivate_resource(brdev, child, type,
1455 return (cbb_cardbus_deactivate_resource(brdev, child, type,
1460 cbb_alloc_resource(device_t brdev, device_t child, int type, int *rid,
1461 u_long start, u_long end, u_long count, u_int flags)
1463 struct cbb_softc *sc = device_get_softc(brdev);
1465 if (sc->flags & CBB_16BIT_CARD)
1466 return (cbb_pcic_alloc_resource(brdev, child, type, rid,
1467 start, end, count, flags));
1469 return (cbb_cardbus_alloc_resource(brdev, child, type, rid,
1470 start, end, count, flags));
1474 cbb_release_resource(device_t brdev, device_t child, int type, int rid,
1477 struct cbb_softc *sc = device_get_softc(brdev);
1479 if (sc->flags & CBB_16BIT_CARD)
1480 return (cbb_pcic_release_resource(brdev, child, type,
1483 return (cbb_cardbus_release_resource(brdev, child, type,
1488 cbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result)
1490 struct cbb_softc *sc = device_get_softc(brdev);
1494 *result = sc->secbus;
1501 cbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value)
1503 struct cbb_softc *sc = device_get_softc(brdev);
1514 cbb_suspend(device_t self)
1517 struct cbb_softc *sc = device_get_softc(self);
1519 error = bus_generic_suspend(self);
1522 cbb_set(sc, CBB_SOCKET_MASK, 0); /* Quiet hardware */
1523 sc->flags &= ~CBB_CARD_OK; /* Card is bogus now */
1528 cbb_resume(device_t self)
1531 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(self);
1535 * Some BIOSes will not save the BARs for the pci chips, so we
1536 * must do it ourselves. If the BAR is reset to 0 for an I/O
1537 * device, it will read back as 0x1, so no explicit test for
1538 * memory devices are needed.
1540 * Note: The PCI bus code should do this automatically for us on
1541 * suspend/resume, but until it does, we have to cope.
1543 pci_write_config(self, CBBR_SOCKBASE, rman_get_start(sc->base_res), 4);
1544 DEVPRINTF((self, "PCI Memory allocated: %08lx\n",
1545 rman_get_start(sc->base_res)));
1549 /* reset interrupt -- Do we really need to do this? */
1550 tmp = cbb_get(sc, CBB_SOCKET_EVENT);
1551 cbb_set(sc, CBB_SOCKET_EVENT, tmp);
1553 /* CSC Interrupt: Card detect interrupt on */
1554 cbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
1556 /* Signal the thread to wakeup. */
1559 mtx_unlock(&sc->mtx);
1561 error = bus_generic_resume(self);
1567 cbb_child_present(device_t self)
1569 struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(self);
1572 sockstate = cbb_get(sc, CBB_SOCKET_STATE);
1573 return (CBB_CARD_PRESENT(sockstate) &&
1574 (sc->flags & CBB_CARD_OK) == CBB_CARD_OK);