sys/dev/pci/iwic_fsm.c

   1 /*      $NetBSD: iwic_fsm.c,v 1.3 2005/12/11 12:22:50 christos Exp $    */
   2
   3 /*
   4  * Copyright (c) 1999, 2000 Dave Boyce. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  *---------------------------------------------------------------------------
  28  *
  29  *      i4b_iwic - isdn4bsd Winbond W6692 driver
  30  *      ----------------------------------------
  31  *
  32  * $FreeBSD$
  33  *
  34  *      last edit-date: [Sun Jan 21 11:09:24 2001]
  35  *
  36  *---------------------------------------------------------------------------*/
  37
  38 #include <sys/cdefs.h>
  39 __KERNEL_RCSID(0, "$NetBSD: iwic_fsm.c,v 1.3 2005/12/11 12:22:50 christos Exp $");
  40
  41 #include <sys/param.h>
  42 #include <sys/kernel.h>
  43 #include <sys/systm.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/callout.h>
  46 #include <sys/socket.h>
  47 #include <sys/device.h>
  48 #include <net/if.h>
  49
  50 #include <sys/bus.h>
  51
  52 #include <dev/pci/pcireg.h>
  53 #include <dev/pci/pcivar.h>
  54 #include <dev/pci/pcidevs.h>
  55
  56 #include <dev/pci/iwicreg.h>
  57 #include <dev/pci/iwicvar.h>
  58
  59 #if DO_I4B_DEBUG
  60 static const char *state_names[] = {
  61         "F3N",
  62         "F3",
  63         "F4",
  64         "F5",
  65         "F6",
  66         "F7",
  67         "F8",
  68         "ILLEGAL",
  69 };
  70
  71 static const char *event_names[] = {
  72         "PHAR",
  73         "CE",
  74         "T3",
  75         "INFO0",
  76         "RSY",
  77         "INFO2",
  78         "INFO48",
  79         "INFO410",
  80         "DR",
  81         "PU",
  82         "DIS",
  83         "EI",
  84         "ILLEGAL"
  85 };
  86 #endif
  87
  88 /*---------------------------------------------------------------------------*
  89  *
  90  *---------------------------------------------------------------------------*/
  91 static void
  92 F_NULL(struct iwic_softc *sc)
  93 {
  94         NDBGL1(L1_F_MSG, "FSM function F_NULL executing");
  95 }
  96
  97 /*---------------------------------------------------------------------------*
  98  *
  99  *---------------------------------------------------------------------------*/
 100 static void
 101 F_AR(struct iwic_softc *sc)
 102 {
 103         NDBGL1(L1_F_MSG, "FSM function F_AR executing");
 104         IWIC_WRITE(sc, CIX, CIX_ECK);
 105 }
 106
 107 /*---------------------------------------------------------------------------*
 108  *
 109  *---------------------------------------------------------------------------*/
 110 static void
 111 F_AR3(struct iwic_softc *sc)
 112 {
 113         NDBGL1(L1_F_MSG, "FSM function F_AR3 executing");
 114         IWIC_WRITE(sc, CIX, CIX_AR8);
 115 }
 116
 117 /*---------------------------------------------------------------------------*
 118  *
 119  *---------------------------------------------------------------------------*/
 120 static void
 121 F_I0I(struct iwic_softc *sc)
 122 {
 123         NDBGL1(L1_F_MSG, "FSM function F_IOI executing");
 124 }
 125
 126 /*---------------------------------------------------------------------------*
 127  *
 128  *---------------------------------------------------------------------------*/
 129 static void
 130 F_I0A(struct iwic_softc *sc)
 131 {
 132         NDBGL1(L1_F_MSG, "FSM function F_IOA executing");
 133         iwic_dchan_disable(sc);
 134         isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 0);
 135 }
 136
 137 /*---------------------------------------------------------------------------*
 138  *
 139  *---------------------------------------------------------------------------*/
 140 static void
 141 F_AI8(struct iwic_softc *sc)
 142 {
 143         NDBGL1(L1_F_MSG, "FSM function F_AI8 executing");
 144         iwic_dchan_transmit(sc);
 145         isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 1);
 146 }
 147
 148 /*---------------------------------------------------------------------------*
 149  *
 150  *---------------------------------------------------------------------------*/
 151 static void
 152 F_AI10(struct iwic_softc *sc)
 153 {
 154         NDBGL1(L1_F_MSG, "FSM function F_AI10 executing");
 155         iwic_dchan_transmit(sc);
 156         isdn_layer2_activate_ind(&sc->sc_l2, sc->sc_l3token, 1);
 157 }
 158
 159 /*---------------------------------------------------------------------------*
 160  *
 161  *---------------------------------------------------------------------------*/
 162 struct iwic_state_tab {
 163         void (*func) (struct iwic_softc *sc);   /* function to execute */
 164         int newstate;                           /* next state */
 165 } iwic_state_tab[N_EVENTS][N_STATES] = {
 166
 167 /* STATE:       F3N                  F3                  F4                  F5                  F6                  F7                  F8                  ILLEGAL STATE        */
 168 /* ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ */
 169 /* 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 }},
 170 /* 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 }},
 171 /* 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 }},
 172 /* 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 }},
 173 /* 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 }},
 174 /* 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 }},
 175 /* 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 }},
 176 /* 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 }},
 177 /* 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 }},
 178 /* 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 }},
 179 /* 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 }},
 180 /* 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 }},
 181 /* 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 }},
 182 };
 183
 184 /*---------------------------------------------------------------------------*
 185  *
 186  *---------------------------------------------------------------------------*/
 187 void
 188 iwic_next_state(struct iwic_softc *sc, int event)
 189 {
 190         int currstate, newstate;
 191
 192         NDBGL1(L1_F_MSG, "event %s", event_names[event]);
 193
 194         if (event >= N_EVENTS)
 195         {
 196                 printf("iwic_next_state: event >= N_EVENTS\n");
 197                 return;
 198         }
 199
 200         currstate = sc->sc_I430state;
 201
 202         newstate = iwic_state_tab[event][currstate].newstate;
 203         if (newstate >= N_STATES)
 204         {
 205                 printf("iwic_next_state: newstate >= N_STATES\n");
 206                 return;
 207         }
 208
 209         NDBGL1(L1_F_MSG, "state %s -> %s",
 210                 state_names[currstate], state_names[newstate]);
 211
 212         sc->sc_I430state = newstate;
 213
 214         (*iwic_state_tab[event][currstate].func) (sc);
 215 }
 216
 217 #if DO_I4B_DEBUG
 218 /*---------------------------------------------------------------------------*
 219  *      return pointer to current state description
 220  *---------------------------------------------------------------------------*/
 221 const char *
 222 iwic_printstate(struct iwic_softc *sc)
 223 {
 224         return state_names[sc->sc_I430state];
 225 }
 226 #endif