NetBSD-5.0.2/sys/dev/pci/iwic_fsm.c
/* $NetBSD: iwic_fsm.c,v 1.4 2007/10/19 12:00:51 ad Exp $ */
/*
* Copyright (c) 1999, 2000 Dave Boyce. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
*---------------------------------------------------------------------------
*
* i4b_iwic - isdn4bsd Winbond W6692 driver
* ----------------------------------------
*
* $FreeBSD$
*
* last edit-date: [Sun Jan 21 11:09:24 2001]
*
*---------------------------------------------------------------------------*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: iwic_fsm.c,v 1.4 2007/10/19 12:00:51 ad Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/callout.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <net/if.h>
#include <sys/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/iwicreg.h>
#include <dev/pci/iwicvar.h>
#if DO_I4B_DEBUG
static const char *state_names[] = {
"F3N",
"F3",
"F4",
"F5",
"F6",
"F7",
"F8",
"ILLEGAL",
};
static const char *event_names[] = {
"PHAR",
"CE",
"T3",
"INFO0",
"RSY",
"INFO2",
"INFO48",
"INFO410",
"DR",
"PU",
"DIS",
"EI",
"ILLEGAL"
};
#endif
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_NULL(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_NULL executing");
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_AR(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_AR executing");
IWIC_WRITE(sc, CIX, CIX_ECK);
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_AR3(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_AR3 executing");
IWIC_WRITE(sc, CIX, CIX_AR8);
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_I0I(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_IOI executing");
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_I0A(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_IOA executing");
iwic_dchan_disable(sc);
isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 0);
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_AI8(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_AI8 executing");
iwic_dchan_transmit(sc);
isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 1);
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
static void
F_AI10(struct iwic_softc *sc)
{
NDBGL1(L1_F_MSG, "FSM function F_AI10 executing");
iwic_dchan_transmit(sc);
isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 1);
}
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
struct iwic_state_tab {
void (*func) (struct iwic_softc *sc); /* function to execute */
int newstate; /* next state */
} iwic_state_tab[N_EVENTS][N_STATES] = {
/* STATE: F3N F3 F4 F5 F6 F7 F8 ILLEGAL STATE */
/* ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ */
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
/* 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 }},
};
/*---------------------------------------------------------------------------*
*
*---------------------------------------------------------------------------*/
void
iwic_next_state(struct iwic_softc *sc, int event)
{
int currstate, newstate;
NDBGL1(L1_F_MSG, "event %s", event_names[event]);
if (event >= N_EVENTS)
{
printf("iwic_next_state: event >= N_EVENTS\n");
return;
}
currstate = sc->sc_I430state;
newstate = iwic_state_tab[event][currstate].newstate;
if (newstate >= N_STATES)
{
printf("iwic_next_state: newstate >= N_STATES\n");
return;
}
NDBGL1(L1_F_MSG, "state %s -> %s",
state_names[currstate], state_names[newstate]);
sc->sc_I430state = newstate;
(*iwic_state_tab[event][currstate].func) (sc);
}
#if DO_I4B_DEBUG
/*---------------------------------------------------------------------------*
* return pointer to current state description
*---------------------------------------------------------------------------*/
const char *
iwic_printstate(struct iwic_softc *sc)
{
return state_names[sc->sc_I430state];
}
#endif