227 lines
8.5 KiB
C
227 lines
8.5 KiB
C
/* $NetBSD: iwic_fsm.c,v 1.4 2007/10/19 12:00:51 ad Exp $ */
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/*
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* Copyright (c) 1999, 2000 Dave Boyce. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_iwic - isdn4bsd Winbond W6692 driver
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* ----------------------------------------
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*
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* $FreeBSD$
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*
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* last edit-date: [Sun Jan 21 11:09:24 2001]
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*
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*---------------------------------------------------------------------------*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: iwic_fsm.c,v 1.4 2007/10/19 12:00:51 ad Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/callout.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <sys/bus.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/pci/iwicreg.h>
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#include <dev/pci/iwicvar.h>
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#if DO_I4B_DEBUG
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static const char *state_names[] = {
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"F3N",
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"F3",
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"F4",
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"F5",
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"F6",
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"F7",
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"F8",
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"ILLEGAL",
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};
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static const char *event_names[] = {
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"PHAR",
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"CE",
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"T3",
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"INFO0",
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"RSY",
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"INFO2",
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"INFO48",
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"INFO410",
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"DR",
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"PU",
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"DIS",
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"EI",
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"ILLEGAL"
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};
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#endif
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_NULL(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_NULL executing");
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_AR(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_AR executing");
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IWIC_WRITE(sc, CIX, CIX_ECK);
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_AR3(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_AR3 executing");
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IWIC_WRITE(sc, CIX, CIX_AR8);
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_I0I(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_IOI executing");
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_I0A(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_IOA executing");
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iwic_dchan_disable(sc);
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isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 0);
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_AI8(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_AI8 executing");
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iwic_dchan_transmit(sc);
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isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 1);
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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static void
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F_AI10(struct iwic_softc *sc)
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{
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NDBGL1(L1_F_MSG, "FSM function F_AI10 executing");
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iwic_dchan_transmit(sc);
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isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 1);
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}
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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struct iwic_state_tab {
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void (*func) (struct iwic_softc *sc); /* function to execute */
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int newstate; /* next state */
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} iwic_state_tab[N_EVENTS][N_STATES] = {
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/* STATE: F3N F3 F4 F5 F6 F7 F8 ILLEGAL STATE */
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/* ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ */
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/* EV_PHAR */ {{F_AR, ST_F3 }, {F_AR3, ST_F4 }, {F_NULL, ST_F4 }, {F_NULL, ST_F5 }, {F_NULL, ST_F6 }, {F_NULL, ST_F7 }, {F_NULL, ST_F8 }, {F_NULL, ST_ILL }},
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/* EV_CE */ {{F_NULL, ST_F3 }, {F_AR3, ST_F4 }, {F_NULL, ST_F4 }, {F_NULL, ST_F4 }, {F_NULL, ST_F4 }, {F_NULL, ST_F4 }, {F_NULL, ST_F4 }, {F_NULL, ST_ILL }},
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/* EV_T3 */ {{F_NULL, ST_F3N }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F7 }, {F_NULL, ST_F8 }, {F_NULL, ST_ILL }},
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/* EV_INFO0 */ {{F_I0I, ST_F3 }, {F_I0I, ST_F3 }, {F_I0I, ST_F3 }, {F_I0I, ST_F3 }, {F_I0A, ST_F3 }, {F_I0A, ST_F3 }, {F_I0A, ST_F3 }, {F_NULL, ST_ILL }},
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/* EV_RSY */ {{F_NULL, ST_F3 }, {F_NULL, ST_F5 }, {F_NULL, ST_F5 }, {F_NULL, ST_F5 }, {F_NULL, ST_F8 }, {F_NULL, ST_F8 }, {F_NULL, ST_F8 }, {F_NULL, ST_ILL }},
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/* EV_INFO2 */ {{F_NULL, ST_F6 }, {F_NULL, ST_F6 }, {F_NULL, ST_F6 }, {F_NULL, ST_F6 }, {F_NULL, ST_F6 }, {F_NULL, ST_F6 }, {F_NULL, ST_F6 }, {F_NULL, ST_ILL }},
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/* EV_INFO48 */ {{F_AI8 , ST_F7 }, {F_AI8, ST_F7 }, {F_AI8, ST_F7 }, {F_AI8, ST_F7 }, {F_AI8, ST_F7 }, {F_AI8, ST_F7 }, {F_AI8, ST_F7 }, {F_NULL, ST_ILL }},
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/* EV_INFO410*/ {{F_AI10, ST_F7 }, {F_AI10, ST_F7 }, {F_AI10, ST_F7 }, {F_AI10, ST_F7 }, {F_AI10, ST_F7 }, {F_AI10, ST_F7 }, {F_AI10, ST_F7 }, {F_NULL, ST_ILL }},
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/* EV_DR */ {{F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F4 }, {F_NULL, ST_F5 }, {F_NULL, ST_F6 }, {F_NULL, ST_F7 }, {F_NULL, ST_F8 }, {F_NULL, ST_ILL }},
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/* EV_PU */ {{F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F4 }, {F_NULL, ST_F5 }, {F_NULL, ST_F6 }, {F_NULL, ST_F7 }, {F_NULL, ST_F8 }, {F_NULL, ST_ILL }},
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/* EV_DIS */ {{F_NULL, ST_F3N }, {F_NULL, ST_F3N }, {F_NULL, ST_F3N }, {F_NULL, ST_F3N }, {F_NULL, ST_F3N }, {F_I0A, ST_F3N }, {F_I0A, ST_F3N }, {F_NULL, ST_ILL }},
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/* EV_EI */ {{F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_F3 }, {F_NULL, ST_ILL }},
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/* EV_ILL */ {{F_NULL, ST_ILL }, {F_NULL, ST_ILL }, {F_NULL, ST_ILL }, {F_NULL, ST_ILL }, {F_NULL, ST_ILL }, {F_NULL, ST_ILL }, {F_NULL, ST_ILL }, {F_NULL, ST_ILL }},
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};
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/*---------------------------------------------------------------------------*
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*
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*---------------------------------------------------------------------------*/
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void
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iwic_next_state(struct iwic_softc *sc, int event)
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{
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int currstate, newstate;
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NDBGL1(L1_F_MSG, "event %s", event_names[event]);
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if (event >= N_EVENTS)
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{
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printf("iwic_next_state: event >= N_EVENTS\n");
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return;
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}
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currstate = sc->sc_I430state;
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newstate = iwic_state_tab[event][currstate].newstate;
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if (newstate >= N_STATES)
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{
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printf("iwic_next_state: newstate >= N_STATES\n");
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return;
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}
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NDBGL1(L1_F_MSG, "state %s -> %s",
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state_names[currstate], state_names[newstate]);
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sc->sc_I430state = newstate;
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(*iwic_state_tab[event][currstate].func) (sc);
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}
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#if DO_I4B_DEBUG
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/*---------------------------------------------------------------------------*
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* return pointer to current state description
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*---------------------------------------------------------------------------*/
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const char *
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iwic_printstate(struct iwic_softc *sc)
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{
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return state_names[sc->sc_I430state];
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}
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#endif
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