/* $NetBSD: cardslot.c,v 1.26 2005/02/04 02:10:36 perry Exp $ */ /* * Copyright (c) 1999 and 2000 * HAYAKAWA Koichi. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by HAYAKAWA Koichi. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: cardslot.c,v 1.26 2005/02/04 02:10:36 perry Exp $"); #include "opt_cardslot.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" #if defined CARDSLOT_DEBUG #define STATIC #define DPRINTF(a) printf a #else #define STATIC static #define DPRINTF(a) #endif STATIC void cardslotattach(struct device *, struct device *, void *); STATIC int cardslotmatch(struct device *, struct cfdata *, void *); static void create_slot_manager(void *); static void cardslot_event_thread(void *arg); STATIC int cardslot_cb_print(void *aux, const char *pcic); static int cardslot_16_print(void *, const char *); static int cardslot_16_submatch(struct device *, struct cfdata *, const locdesc_t *, void *); CFATTACH_DECL(cardslot, sizeof(struct cardslot_softc), cardslotmatch, cardslotattach, NULL, NULL); STATIC int cardslotmatch(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct cardslot_attach_args *caa = aux; if (caa->caa_cb_attach == NULL && caa->caa_16_attach == NULL) { /* Neither CardBus nor 16-bit PCMCIA are defined. */ return 0; } return 1; } STATIC void cardslotattach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct cardslot_softc *sc = (struct cardslot_softc *)self; struct cardslot_attach_args *caa = aux; struct cbslot_attach_args *cba = caa->caa_cb_attach; struct pcmciabus_attach_args *pa = caa->caa_16_attach; struct cardbus_softc *csc = NULL; struct pcmcia_softc *psc = NULL; sc->sc_slot = sc->sc_dev.dv_unit; sc->sc_cb_softc = NULL; sc->sc_16_softc = NULL; SIMPLEQ_INIT(&sc->sc_events); sc->sc_th_enable = 0; printf(" slot %d flags %x\n", sc->sc_slot, sc->sc_dev.dv_cfdata->cf_flags); DPRINTF(("%s attaching CardBus bus...\n", sc->sc_dev.dv_xname)); if (cba != NULL) { csc = (void *)config_found_ia(self, "cbbus", cba, cardslot_cb_print); if (csc) { /* cardbus found */ DPRINTF(("cardslotattach: found cardbus on %s\n", sc->sc_dev.dv_xname)); sc->sc_cb_softc = csc; } } if (pa != NULL) { psc = (void *)config_found_sm_loc(self, "pcmciabus", NULL, pa, cardslot_16_print, cardslot_16_submatch); if (psc) { /* pcmcia 16-bit bus found */ DPRINTF(("cardslotattach: found 16-bit pcmcia bus\n")); sc->sc_16_softc = psc; /* * XXX: * dirty. This code should be removed to achieve MI. */ caa->caa_ph->pcmcia = (struct device *)psc; } } if (csc != NULL || psc != NULL) { config_pending_incr(); kthread_create(create_slot_manager, (void *)sc); } if (csc && (csc->sc_cf->cardbus_ctrl)(csc->sc_cc, CARDBUS_CD)) { DPRINTF(("cardslotattach: CardBus card found\n")); /* attach deferred */ cardslot_event_throw(sc, CARDSLOT_EVENT_INSERTION_CB); } if (psc && (psc->pct->card_detect)(psc->pch)) { DPRINTF(("cardbusattach: 16-bit card found\n")); /* attach deferred */ cardslot_event_throw(sc, CARDSLOT_EVENT_INSERTION_16); } } STATIC int cardslot_cb_print(aux, pnp) void *aux; const char *pnp; { struct cbslot_attach_args *cba = aux; if (pnp) { aprint_normal("cardbus at %s subordinate bus %d", pnp, cba->cba_bus); } return UNCONF; } static int cardslot_16_submatch(parent, cf, ldesc, aux) struct device *parent; struct cfdata *cf; const locdesc_t *ldesc; void *aux; { if (cf->cf_loc[PCMCIABUSCF_CONTROLLER] != PCMCIABUSCF_CONTROLLER_DEFAULT && cf->cf_loc[PCMCIABUSCF_CONTROLLER] != 0) { return 0; } if ((cf->cf_loc[PCMCIABUSCF_CONTROLLER] == PCMCIABUSCF_CONTROLLER_DEFAULT)) { return (config_match(parent, cf, aux)); } return 0; } static int cardslot_16_print(arg, pnp) void *arg; const char *pnp; { if (pnp) { aprint_normal("pcmciabus at %s", pnp); } return UNCONF; } static void create_slot_manager(arg) void *arg; { struct cardslot_softc *sc = (struct cardslot_softc *)arg; sc->sc_th_enable = 1; if (kthread_create1(cardslot_event_thread, sc, &sc->sc_event_thread, "%s", sc->sc_dev.dv_xname)) { printf("%s: unable to create event thread for slot %d\n", sc->sc_dev.dv_xname, sc->sc_slot); panic("create_slot_manager"); } } /* * void cardslot_event_throw(struct cardslot_softc *sc, int ev) * * This function throws an event to the event handler. If the state * of a slot is changed, it should be noticed using this function. */ void cardslot_event_throw(sc, ev) struct cardslot_softc *sc; int ev; { struct cardslot_event *ce; DPRINTF(("cardslot_event_throw: an event %s comes\n", ev == CARDSLOT_EVENT_INSERTION_CB ? "CardBus Card inserted" : ev == CARDSLOT_EVENT_INSERTION_16 ? "16-bit Card inserted" : ev == CARDSLOT_EVENT_REMOVAL_CB ? "CardBus Card removed" : ev == CARDSLOT_EVENT_REMOVAL_16 ? "16-bit Card removed" : "???")); if (NULL == (ce = (struct cardslot_event *)malloc(sizeof (struct cardslot_event), M_TEMP, M_NOWAIT))) { panic("cardslot_enevt"); } ce->ce_type = ev; { int s = spltty(); SIMPLEQ_INSERT_TAIL(&sc->sc_events, ce, ce_q); splx(s); } wakeup(&sc->sc_events); return; } /* * static void cardslot_event_thread(void *arg) * * This function is the main routine handing cardslot events such as * insertions and removals. * */ static void cardslot_event_thread(arg) void *arg; { struct cardslot_softc *sc = arg; struct cardslot_event *ce; int s, first = 1; static int antonym_ev[4] = { CARDSLOT_EVENT_REMOVAL_16, CARDSLOT_EVENT_INSERTION_16, CARDSLOT_EVENT_REMOVAL_CB, CARDSLOT_EVENT_INSERTION_CB }; while (sc->sc_th_enable) { s = spltty(); if ((ce = SIMPLEQ_FIRST(&sc->sc_events)) == NULL) { splx(s); if (first) { first = 0; config_pending_decr(); } (void) tsleep(&sc->sc_events, PWAIT, "cardslotev", 0); continue; } SIMPLEQ_REMOVE_HEAD(&sc->sc_events, ce_q); splx(s); if (IS_CARDSLOT_INSERT_REMOVE_EV(ce->ce_type)) { /* Chattering suppression */ s = spltty(); while (1) { struct cardslot_event *ce1, *ce2; if ((ce1 = SIMPLEQ_FIRST(&sc->sc_events)) == NULL) { break; } if (ce1->ce_type != antonym_ev[ce->ce_type]) { break; } if ((ce2 = SIMPLEQ_NEXT(ce1, ce_q)) == NULL) { break; } if (ce2->ce_type == ce->ce_type) { SIMPLEQ_REMOVE_HEAD(&sc->sc_events, ce_q); free(ce1, M_TEMP); SIMPLEQ_REMOVE_HEAD(&sc->sc_events, ce_q); free(ce2, M_TEMP); } } splx(s); } switch (ce->ce_type) { case CARDSLOT_EVENT_INSERTION_CB: if ((CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_CB) || (CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_16)) { if (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING) { /* * A card has already been * inserted and works. */ break; } } if (sc->sc_cb_softc) { CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_CB); if (cardbus_attach_card(sc->sc_cb_softc) > 0) { /* at least one function works */ CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_WORKING); } else { /* * no functions work or this * card is not known */ CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_NOTWORK); } } else { panic("no cardbus on %s", sc->sc_dev.dv_xname); } break; case CARDSLOT_EVENT_INSERTION_16: if ((CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_CB) || (CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_16)) { if (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING) { /* * A card has already been * inserted and work. */ break; } } if (sc->sc_16_softc) { CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_16); if (pcmcia_card_attach((struct device *)sc->sc_16_softc)) { /* Do not attach */ CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_NOTWORK); } else { /* working */ CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_WORKING); } } else { panic("no 16-bit pcmcia on %s", sc->sc_dev.dv_xname); } break; case CARDSLOT_EVENT_REMOVAL_CB: if (CARDSLOT_CARDTYPE(sc->sc_status) == CARDSLOT_STATUS_CARD_CB) { /* CardBus card has not been inserted. */ if (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING) { cardbus_detach_card(sc->sc_cb_softc); CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_NOTWORK); CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_CARD_NONE); } CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_NONE); } else if (CARDSLOT_CARDTYPE(sc->sc_status) != CARDSLOT_STATUS_CARD_16) { /* Unknown card... */ CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_NONE); } CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_NOTWORK); break; case CARDSLOT_EVENT_REMOVAL_16: DPRINTF(("%s: removal event\n", sc->sc_dev.dv_xname)); if (CARDSLOT_CARDTYPE(sc->sc_status) != CARDSLOT_STATUS_CARD_16) { /* 16-bit card has not been inserted. */ break; } if ((sc->sc_16_softc != NULL) && (CARDSLOT_WORK(sc->sc_status) == CARDSLOT_STATUS_WORKING)) { struct pcmcia_softc *psc = sc->sc_16_softc; pcmcia_card_deactivate((struct device *)psc); pcmcia_chip_socket_disable(psc->pct, psc->pch); pcmcia_card_detach((struct device *)psc, DETACH_FORCE); } CARDSLOT_SET_CARDTYPE(sc->sc_status, CARDSLOT_STATUS_CARD_NONE); CARDSLOT_SET_WORK(sc->sc_status, CARDSLOT_STATUS_NOTWORK); break; default: panic("cardslot_event_thread: unknown event %d", ce->ce_type); } free(ce, M_TEMP); } sc->sc_event_thread = NULL; /* In case the parent device is waiting for us to exit. */ wakeup(sc); kthread_exit(0); }