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