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