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cardslot.c revision 1.15 
      1 /*	$NetBSD: cardslot.c,v 1.15 2001/11/13 12:51:12 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999 and 2000
      5  *       HAYAKAWA Koichi.  All rights reserved.
      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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by HAYAKAWA Koichi.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: cardslot.c,v 1.15 2001/11/13 12:51:12 lukem Exp $");
     37 
     38 #include "opt_cardslot.h"
     39 
     40 #include <sys/types.h>
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 #include <sys/malloc.h>
     45 #include <sys/kernel.h>
     46 #include <sys/syslog.h>
     47 #include <sys/kthread.h>
     48 
     49 #include <machine/bus.h>
     50 
     51 #include <dev/cardbus/cardslotvar.h>
     52 #include <dev/cardbus/cardbusvar.h>
     53 #include <dev/pcmcia/pcmciavar.h>
     54 #include <dev/pcmcia/pcmciachip.h>
     55 #include <dev/ic/i82365var.h>
     56 
     57 
     58 #if defined CARDSLOT_DEBUG
     59 #define STATIC
     60 #define DPRINTF(a) printf a
     61 #else
     62 #define STATIC static
     63 #define DPRINTF(a)
     64 #endif
     65 
     66 
     67 
     68 STATIC void cardslotattach __P((struct device *, struct device *, void *));
     69 
     70 STATIC int cardslotmatch __P((struct device *, struct cfdata *, void *));
     71 static void create_slot_manager __P((void *));
     72 static void cardslot_event_thread __P((void *arg));
     73 
     74 STATIC int cardslot_cb_print __P((void *aux, const char *pcic));
     75 static int cardslot_16_print __P((void *, const char *));
     76 static int cardslot_16_submatch __P((struct device *, struct cfdata *,void *));
     77 
     78 struct cfattach cardslot_ca = {
     79 	sizeof(struct cardslot_softc), cardslotmatch, cardslotattach
     80 };
     81 
     82 
     83 STATIC int
     84 cardslotmatch(parent, cf, aux)
     85 	struct device *parent;
     86 	struct cfdata *cf;
     87 	void *aux;
     88 {
     89 	struct cardslot_attach_args *caa = aux;
     90 
     91 	if (caa->caa_cb_attach == NULL && caa->caa_16_attach == NULL) {
     92 		/* Neither CardBus nor 16-bit PCMCIA are defined. */
     93 		return 0;
     94 	}
     95 
     96 	return 1;
     97 }
     98 
     99 
    100 
    101 STATIC void
    102 cardslotattach(parent, self, aux)
    103 	struct device *parent;
    104 	struct device *self;
    105 	void *aux;
    106 {
    107 	struct cardslot_softc *sc = (struct cardslot_softc *)self;
    108 	struct cardslot_attach_args *caa = aux;
    109 
    110 	struct cbslot_attach_args *cba = caa->caa_cb_attach;
    111 	struct pcmciabus_attach_args *pa = caa->caa_16_attach;
    112 
    113 	struct cardbus_softc *csc;
    114 	struct pcmcia_softc *psc;
    115 
    116 	sc->sc_slot = sc->sc_dev.dv_unit;
    117 	sc->sc_cb_softc = NULL;
    118 	sc->sc_16_softc = NULL;
    119 	SIMPLEQ_INIT(&sc->sc_events);
    120 	sc->sc_th_enable = 0;
    121 
    122 	printf(" slot %d flags %x\n", sc->sc_slot, sc->sc_dev.dv_cfdata->cf_flags);
    123 
    124 	DPRINTF(("%s attaching CardBus bus...\n", sc->sc_dev.dv_xname));
    125 	if (cba != NULL) {
    126 		if (NULL != (csc = (void *)config_found(self, cba, cardslot_cb_print))) {
    127 			/* cardbus found */
    128 			DPRINTF(("cardslotattach: found cardbus on %s\n", sc->sc_dev.dv_xname));
    129 			sc->sc_cb_softc = csc;
    130 		}
    131 	}
    132 
    133 	if (pa != NULL) {
    134 		if (NULL != (psc = (void *)config_found_sm(self, pa,
    135 		    cardslot_16_print, cardslot_16_submatch))) {
    136 			/* pcmcia 16-bit bus found */
    137 			DPRINTF(("cardslotattach: found 16-bit pcmcia bus\n"));
    138 			sc->sc_16_softc = psc;
    139 			/*
    140 			 * XXX:
    141 			 * dirty.  This code should be removed to achieve MI.
    142 			 */
    143 			caa->caa_ph->pcmcia = (struct device *)psc;
    144 		}
    145 	}
    146 
    147 	if (csc != NULL || psc != NULL) {
    148 		config_pending_incr();
    149 		kthread_create(create_slot_manager, (void *)sc);
    150 	}
    151 
    152 	if (csc && (csc->sc_cf->cardbus_ctrl)(csc->sc_cc, CARDBUS_CD)) {
    153 		DPRINTF(("cardslotattach: CardBus card found\n"));
    154 		/* attach deferred */
    155 		cardslot_event_throw(sc, CARDSLOT_EVENT_INSERTION_CB);
    156 	}
    157 
    158 	if (psc && (psc->pct->card_detect)(psc->pch)) {
    159 		DPRINTF(("cardbusattach: 16-bit card found\n"));
    160 		/* attach deferred */
    161 		cardslot_event_throw(sc, CARDSLOT_EVENT_INSERTION_16);
    162 	}
    163 }
    164 
    165 
    166 
    167 STATIC int
    168 cardslot_cb_print(aux, pnp)
    169 	void *aux;
    170 	const char *pnp;
    171 {
    172 	struct cbslot_attach_args *cba = aux;
    173 
    174 	if (pnp) {
    175 		printf("cardbus at %s subordinate bus %d", pnp, cba->cba_bus);
    176 	}
    177 
    178 	return UNCONF;
    179 }
    180 
    181 
    182 static int
    183 cardslot_16_submatch(parent, cf, aux)
    184 	struct device *parent;
    185 	struct cfdata *cf;
    186 	void *aux;
    187 {
    188 
    189 	if (cf->cf_loc[PCMCIABUSCF_CONTROLLER] != PCMCIABUSCF_CONTROLLER_DEFAULT
    190 	    && cf->cf_loc[PCMCIABUSCF_CONTROLLER] != 0) {
    191 		return 0;
    192 	}
    193 
    194 	if ((cf->cf_loc[PCMCIABUSCF_CONTROLLER] == PCMCIABUSCF_CONTROLLER_DEFAULT)) {
    195 		return ((*cf->cf_attach->ca_match)(parent, cf, aux));
    196 	}
    197 
    198 	return 0;
    199 }
    200 
    201 
    202 
    203 static int
    204 cardslot_16_print(arg, pnp)
    205 	void *arg;
    206 	const char *pnp;
    207 {
    208 
    209 	if (pnp) {
    210 		printf("pcmciabus at %s", pnp);
    211 	}
    212 
    213 	return UNCONF;
    214 }
    215 
    216 
    217 
    218 
    219 static void
    220 create_slot_manager(arg)
    221 	void *arg;
    222 {
    223 	struct cardslot_softc *sc = (struct cardslot_softc *)arg;
    224 
    225 	sc->sc_th_enable = 1;
    226 
    227 	if (kthread_create1(cardslot_event_thread, sc, &sc->sc_event_thread,
    228 	    "%s", sc->sc_dev.dv_xname)) {
    229 		printf("%s: unable to create event thread for slot %d\n",
    230 		    sc->sc_dev.dv_xname, sc->sc_slot);
    231 		panic("create_slot_manager");
    232 	}
    233 }
    234 
    235 
    236 
    237 
    238 /*
    239  * void cardslot_event_throw(struct cardslot_softc *sc, int ev)
    240  *
    241  *   This function throws an event to the event handler.  If the state
    242  *   of a slot is changed, it should be noticed using this function.
    243  */
    244 void
    245 cardslot_event_throw(sc, ev)
    246 	struct cardslot_softc *sc;
    247 	int ev;
    248 {
    249 	struct cardslot_event *ce;
    250 
    251 	DPRINTF(("cardslot_event_throw: an event %s comes\n",
    252 	    ev == CARDSLOT_EVENT_INSERTION_CB ? "CardBus Card inserted" :
    253 	    ev == CARDSLOT_EVENT_INSERTION_16 ? "16-bit Card inserted" :
    254 	    ev == CARDSLOT_EVENT_REMOVAL_CB ? "CardBus Card removed" :
    255 	    ev == CARDSLOT_EVENT_REMOVAL_16 ? "16-bit Card removed" : "???"));
    256 
    257 	if (NULL == (ce = (struct cardslot_event *)malloc(sizeof (struct cardslot_event), M_TEMP, M_NOWAIT))) {
    258 		panic("cardslot_enevt");
    259 	}
    260 
    261 	ce->ce_type = ev;
    262 
    263 	{
    264 		int s = spltty();
    265 		SIMPLEQ_INSERT_TAIL(&sc->sc_events, ce, ce_q);
    266 		splx(s);
    267 	}
    268 
    269 	wakeup(&sc->sc_events);
    270 
    271 	return;
    272 }
    273 
    274 
    275 /*
    276  * static void cardslot_event_thread(void *arg)
    277  *
    278  *   This function is the main routine handing cardslot events such as
    279  *   insertions and removals.
    280  *
    281  */
    282 static void
    283 cardslot_event_thread(arg)
    284 	void *arg;
    285 {
    286 	struct cardslot_softc *sc = arg;
    287 	struct cardslot_event *ce;
    288 	int s, first = 1;
    289 	static int antonym_ev[4] = {
    290 		CARDSLOT_EVENT_REMOVAL_16, CARDSLOT_EVENT_INSERTION_16,
    291 		CARDSLOT_EVENT_REMOVAL_CB, CARDSLOT_EVENT_INSERTION_CB
    292 	};
    293 
    294 	while (sc->sc_th_enable) {
    295 		s = spltty();
    296 		if ((ce = SIMPLEQ_FIRST(&sc->sc_events)) == NULL) {
    297 			splx(s);
    298 			if (first) {
    299 				first = 0;
    300 				config_pending_decr();
    301 			}
    302 			(void) tsleep(&sc->sc_events, PWAIT, "cardslotev", 0);
    303 			continue;
    304 		}
    305 		SIMPLEQ_REMOVE_HEAD(&sc->sc_events, ce, ce_q);
    306 		splx(s);
    307 
    308 		if (IS_CARDSLOT_INSERT_REMOVE_EV(ce->ce_type)) {
    309 			/* Chattering supression */
    310 			s = spltty();
    311 			while (1) {
    312 				struct cardslot_event *ce1, *ce2;
    313 
    314 				if ((ce1 = SIMPLEQ_FIRST(&sc->sc_events)) == NULL) {
    315 					break;
    316 				}
    317 				if (ce1->ce_type != antonym_ev[ce->ce_type]) {
    318 					break;
    319 				}
    320 				if ((ce2 = SIMPLEQ_NEXT(ce1, ce_q)) == NULL) {
    321 					break;
    322 				}
    323 				if (ce2->ce_type == ce->ce_type) {
    324 					SIMPLEQ_REMOVE_HEAD(&sc->sc_events, ce1, ce_q);
    325 					free(ce1, M_TEMP);
    326 					SIMPLEQ_REMOVE_HEAD(&sc->sc_events, ce2, ce_q);
    327 					free(ce2, M_TEMP);
    328 				}
    329 			}
    330 			splx(s);
    331 		}
    332 
    333 		switch (ce->ce_type) {
    334 		case CARDSLOT_EVENT_INSERTION_CB:
    335 			if ((CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_CB)
    336 			    || (CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_16)) {
    337 				if (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING) {
    338 					/*
    339 					 * A card has already been
    340 					 * inserted and works.
    341 					 */
    342 					break;
    343 				}
    344 			}
    345 
    346 			if (sc->sc_cb_softc) {
    347 				CARDSLOT_SET_CARDTYPE(sc->sc_status,
    348 				    CARDSLOT_STATUS_CARD_CB);
    349 				if (cardbus_attach_card(sc->sc_cb_softc) > 0) {
    350 					/* at least one function works */
    351 					CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_WORKING);
    352 				} else {
    353 					/*
    354 					 * no functions work or this
    355 					 * card is not known
    356 					 */
    357 					CARDSLOT_SET_WORK(sc->sc_status,
    358 					    CARDSLOT_STATUS_NOTWORK);
    359 				}
    360 			} else {
    361 				panic("no cardbus on %s", sc->sc_dev.dv_xname);
    362 			}
    363 
    364 			break;
    365 
    366 		case CARDSLOT_EVENT_INSERTION_16:
    367 			if ((CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_CB)
    368 			    || (CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_16)) {
    369 				if (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING) {
    370 					/*
    371 					 * A card has already been
    372 					 * inserted and work.
    373 					 */
    374 					break;
    375 				}
    376 			}
    377 			if (sc->sc_16_softc) {
    378 				CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_16);
    379 				if (pcmcia_card_attach((struct device *)sc->sc_16_softc)) {
    380 					/* Do not attach */
    381 					CARDSLOT_SET_WORK(sc->sc_status,
    382 					    CARDSLOT_STATUS_NOTWORK);
    383 				} else {
    384 					/* working */
    385 					CARDSLOT_SET_WORK(sc->sc_status,
    386 					    CARDSLOT_STATUS_WORKING);
    387 				}
    388 			} else {
    389 				panic("no 16-bit pcmcia on %s", sc->sc_dev.dv_xname);
    390 			}
    391 
    392 			break;
    393 
    394 		case CARDSLOT_EVENT_REMOVAL_CB:
    395 			if (CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_CB) {
    396 				/* CardBus card has not been inserted. */
    397 				if (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING) {
    398 					cardbus_detach_card(sc->sc_cb_softc);
    399 					CARDSLOT_SET_WORK(sc->sc_status,
    400 					    CARDSLOT_STATUS_NOTWORK);
    401 					CARDSLOT_SET_WORK(sc->sc_status,
    402 					    CARDSLOT_STATUS_CARD_NONE);
    403 				}
    404 				CARDSLOT_SET_CARDTYPE(sc->sc_status,
    405 				    CARDSLOT_STATUS_CARD_NONE);
    406 			} else if (CARDSLOT_CARDTYPE(sc->sc_status) != CARDSLOT_STATUS_CARD_16) {
    407 				/* Unknown card... */
    408 				CARDSLOT_SET_CARDTYPE(sc->sc_status,
    409 				    CARDSLOT_STATUS_CARD_NONE);
    410 			}
    411 			CARDSLOT_SET_WORK(sc->sc_status,
    412 			    CARDSLOT_STATUS_NOTWORK);
    413 			break;
    414 
    415 		case CARDSLOT_EVENT_REMOVAL_16:
    416 			DPRINTF(("%s: removal event\n", sc->sc_dev.dv_xname));
    417 			if (CARDSLOT_CARDTYPE(sc->sc_status) != CARDSLOT_STATUS_CARD_16) {
    418 				/* 16-bit card has not been inserted. */
    419 				break;
    420 			}
    421 			if ((sc->sc_16_softc != NULL)
    422 			    && (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING)) {
    423 				struct pcmcia_softc *psc = sc->sc_16_softc;
    424 
    425 				pcmcia_card_deactivate((struct device *)psc);
    426 				pcmcia_chip_socket_disable(psc->pct, psc->pch);
    427 				pcmcia_card_detach((struct device *)psc, DETACH_FORCE);
    428 			}
    429 			CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_NONE);
    430 			CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_NOTWORK);
    431 			break;
    432 
    433 		default:
    434 			panic("cardslot_event_thread: unknown event %d", ce->ce_type);
    435 		}
    436 		free(ce, M_TEMP);
    437 	}
    438 
    439 	sc->sc_event_thread = NULL;
    440 
    441 	/* In case the parent device is waiting for us to exit. */
    442 	wakeup(sc);
    443 
    444 	kthread_exit(0);
    445 }
    446