2 * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 /*---------------------------------------------------------------------------
28 * i4b_ifpnp_l1fsm.c - AVM Fritz PnP layer 1 I.430 state machine
29 * -------------------------------------------------------------
30 * $Id: i4b_ifpnp_l1fsm.c,v 1.4 2000/05/29 15:41:41 hm Exp $
31 * $Ust: src/i4b/layer1-nb/ifpnp/i4b_ifpnp_l1fsm.c,v 1.4 2000/04/18 08:03:05 ust Exp $
32 * last edit-date: [Mon May 29 15:25:04 2000]
34 *---------------------------------------------------------------------------*/
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/param.h>
40 #include <sys/kernel.h>
41 #include <sys/systm.h>
42 #include <sys/socket.h>
46 #include <i4b/include/i4b_debug.h>
47 #include <i4b/include/i4b_ioctl.h>
48 #include <i4b/include/i4b_trace.h>
50 #include <i4b/layer1/isic/i4b_isic.h>
52 #include <i4b/layer1/i4b_l1.h>
54 #include <i4b/include/i4b_global.h>
56 #include <i4b/include/i4b_mbuf.h>
58 #include <i4b/layer1/ifpnp/i4b_ifpnp_ext.h>
61 static char *state_text[N_STATES] = {
64 "F5 Identifying Input",
71 static char *event_text[N_EVENTS] = {
73 "EV_T3 Timer 3 expired",
74 "EV_INFO0 INFO0 received",
75 "EV_RSY Level Detected",
76 "EV_INFO2 INFO2 received",
77 "EV_INFO48 INFO4 received",
78 "EV_INFO410 INFO4 received",
79 "EV_DR Deactivate Req",
81 "EV_DIS Disconnected",
87 /* Function prototypes */
89 static void timer3_expired (struct l1_softc *sc);
90 static void T3_start (struct l1_softc *sc);
91 static void T3_stop (struct l1_softc *sc);
92 static void F_T3ex (struct l1_softc *sc);
93 static void timer4_expired (struct l1_softc *sc);
94 static void T4_start (struct l1_softc *sc);
95 static void T4_stop (struct l1_softc *sc);
96 static void F_AI8 (struct l1_softc *sc);
97 static void F_AI10 (struct l1_softc *sc);
98 static void F_I01 (struct l1_softc *sc);
99 static void F_I02 (struct l1_softc *sc);
100 static void F_I03 (struct l1_softc *sc);
101 static void F_I2 (struct l1_softc *sc);
102 static void F_ill (struct l1_softc *sc);
103 static void F_NULL (struct l1_softc *sc);
105 /*---------------------------------------------------------------------------*
106 * I.430 Timer T3 expire function
107 *---------------------------------------------------------------------------*/
109 timer3_expired(struct l1_softc *sc)
113 NDBGL1(L1_T_ERR, "state = %s", ifpnp_printstate(sc));
116 /* XXX try some recovery here XXX */
120 sc->sc_init_tries++; /* increment retry count */
122 /*XXX*/ if(sc->sc_init_tries > 4)
126 sc->sc_init_tries = 0;
128 if(sc->sc_obuf2 != NULL)
130 i4b_Dfreembuf(sc->sc_obuf2);
133 if(sc->sc_obuf != NULL)
135 i4b_Dfreembuf(sc->sc_obuf);
144 i4b_l1_mph_status_ind(L0IFPNPUNIT(sc->sc_unit), STI_NOL1ACC, 0, NULL);
147 ifpnp_next_state(sc, EV_T3);
151 NDBGL1(L1_T_ERR, "expired without starting it ....");
155 /*---------------------------------------------------------------------------*
156 * I.430 Timer T3 start
157 *---------------------------------------------------------------------------*/
159 T3_start(struct l1_softc *sc)
161 NDBGL1(L1_T_MSG, "state = %s", ifpnp_printstate(sc));
163 sc->sc_T3_callout = timeout((TIMEOUT_FUNC_T)timer3_expired,(struct l1_softc *)sc, 2*hz);
166 /*---------------------------------------------------------------------------*
167 * I.430 Timer T3 stop
168 *---------------------------------------------------------------------------*/
170 T3_stop(struct l1_softc *sc)
172 NDBGL1(L1_T_MSG, "state = %s", ifpnp_printstate(sc));
174 sc->sc_init_tries = 0; /* init connect retry count */
179 untimeout((TIMEOUT_FUNC_T)timer3_expired,(struct l1_softc *)sc, sc->sc_T3_callout);
183 /*---------------------------------------------------------------------------*
184 * I.430 Timer T3 expiry
185 *---------------------------------------------------------------------------*/
187 F_T3ex(struct l1_softc *sc)
189 NDBGL1(L1_F_MSG, "FSM function F_T3ex executing");
190 if(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S)
191 i4b_l1_ph_deactivate_ind(L0IFPNPUNIT(sc->sc_unit));
194 /*---------------------------------------------------------------------------*
195 * Timer T4 expire function
196 *---------------------------------------------------------------------------*/
198 timer4_expired(struct l1_softc *sc)
202 NDBGL1(L1_T_MSG, "state = %s", ifpnp_printstate(sc));
204 i4b_l1_mph_status_ind(L0IFPNPUNIT(sc->sc_unit), STI_PDEACT, 0, NULL);
208 NDBGL1(L1_T_ERR, "expired without starting it ....");
212 /*---------------------------------------------------------------------------*
214 *---------------------------------------------------------------------------*/
216 T4_start(struct l1_softc *sc)
218 NDBGL1(L1_T_MSG, "state = %s", ifpnp_printstate(sc));
220 sc->sc_T4_callout = timeout((TIMEOUT_FUNC_T)timer4_expired,(struct l1_softc *)sc, hz);
223 /*---------------------------------------------------------------------------*
225 *---------------------------------------------------------------------------*/
227 T4_stop(struct l1_softc *sc)
229 NDBGL1(L1_T_MSG, "state = %s", ifpnp_printstate(sc));
234 untimeout((TIMEOUT_FUNC_T)timer4_expired,(struct l1_softc *)sc, sc->sc_T4_callout);
238 /*---------------------------------------------------------------------------*
239 * FSM function: received AI8
240 *---------------------------------------------------------------------------*/
242 F_AI8(struct l1_softc *sc)
246 NDBGL1(L1_F_MSG, "FSM function F_AI8 executing");
248 if(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S)
249 i4b_l1_ph_activate_ind(L0IFPNPUNIT(sc->sc_unit));
253 if(sc->sc_trace & TRACE_I)
258 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
263 i4b_l1_trace_ind(&hdr, 1, &info);
267 /*---------------------------------------------------------------------------*
268 * FSM function: received AI10
269 *---------------------------------------------------------------------------*/
271 F_AI10(struct l1_softc *sc)
275 NDBGL1(L1_F_MSG, "FSM function F_AI10 executing");
277 if(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S)
278 i4b_l1_ph_activate_ind(L0IFPNPUNIT(sc->sc_unit));
282 if(sc->sc_trace & TRACE_I)
285 char info = INFO4_10;
287 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
292 i4b_l1_trace_ind(&hdr, 1, &info);
296 /*---------------------------------------------------------------------------*
297 * FSM function: received INFO 0 in states F3 .. F5
298 *---------------------------------------------------------------------------*/
300 F_I01(struct l1_softc *sc)
302 NDBGL1(L1_F_MSG, "FSM function F_I01 executing");
304 if(sc->sc_trace & TRACE_I)
309 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
314 i4b_l1_trace_ind(&hdr, 1, &info);
318 /*---------------------------------------------------------------------------*
319 * FSM function: received INFO 0 in state F6
320 *---------------------------------------------------------------------------*/
322 F_I02(struct l1_softc *sc)
324 NDBGL1(L1_F_MSG, "FSM function F_I02 executing");
326 if(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S)
327 i4b_l1_ph_deactivate_ind(L0IFPNPUNIT(sc->sc_unit));
329 if(sc->sc_trace & TRACE_I)
334 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
339 i4b_l1_trace_ind(&hdr, 1, &info);
343 /*---------------------------------------------------------------------------*
344 * FSM function: received INFO 0 in state F7 or F8
345 *---------------------------------------------------------------------------*/
347 F_I03(struct l1_softc *sc)
349 NDBGL1(L1_F_MSG, "FSM function F_I03 executing");
351 if(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S)
352 i4b_l1_ph_deactivate_ind(L0IFPNPUNIT(sc->sc_unit));
356 if(sc->sc_trace & TRACE_I)
361 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
366 i4b_l1_trace_ind(&hdr, 1, &info);
370 /*---------------------------------------------------------------------------*
371 * FSM function: activate request
372 *---------------------------------------------------------------------------*/
374 F_AR(struct l1_softc *sc)
376 NDBGL1(L1_F_MSG, "FSM function F_AR executing");
378 if(sc->sc_trace & TRACE_I)
383 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
388 i4b_l1_trace_ind(&hdr, 1, &info);
391 ifpnp_isac_l1_cmd(sc, CMD_AR8);
396 /*---------------------------------------------------------------------------*
397 * FSM function: received INFO2
398 *---------------------------------------------------------------------------*/
400 F_I2(struct l1_softc *sc)
402 NDBGL1(L1_F_MSG, "FSM function F_I2 executing");
404 if(sc->sc_trace & TRACE_I)
409 hdr.unit = L0IFPNPUNIT(sc->sc_unit);
414 i4b_l1_trace_ind(&hdr, 1, &info);
419 /*---------------------------------------------------------------------------*
420 * illegal state default action
421 *---------------------------------------------------------------------------*/
423 F_ill(struct l1_softc *sc)
425 NDBGL1(L1_F_ERR, "FSM function F_ill executing");
428 /*---------------------------------------------------------------------------*
430 *---------------------------------------------------------------------------*/
432 F_NULL(struct l1_softc *sc)
434 NDBGL1(L1_F_MSG, "FSM function F_NULL executing");
438 /*---------------------------------------------------------------------------*
439 * layer 1 state transition table
440 *---------------------------------------------------------------------------*/
441 struct ifpnp_state_tab {
442 void (*func) (struct l1_softc *sc); /* function to execute */
443 int newstate; /* next state */
444 } ifpnp_state_tab[N_EVENTS][N_STATES] = {
446 /* STATE: F3 F4 F5 F6 F7 F8 ILLEGAL STATE */
447 /* -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
448 /* EV_PHAR x*/ {{F_AR, ST_F4}, {F_NULL, ST_F4}, {F_NULL, ST_F5}, {F_NULL, ST_F6}, {F_ill, ST_ILL}, {F_NULL, ST_F8}, {F_ill, ST_ILL}},
449 /* EV_T3 x*/ {{F_NULL, ST_F3}, {F_T3ex, ST_F3}, {F_T3ex, ST_F3}, {F_T3ex, ST_F3}, {F_NULL, ST_F7}, {F_NULL, ST_F8}, {F_ill, ST_ILL}},
450 /* EV_INFO0 */ {{F_I01, ST_F3}, {F_I01, ST_F4}, {F_I01, ST_F5}, {F_I02, ST_F3}, {F_I03, ST_F3}, {F_I03, ST_F3}, {F_ill, ST_ILL}},
451 /* EV_RSY x*/ {{F_NULL, ST_F3}, {F_NULL, ST_F5}, {F_NULL, ST_F5}, {F_NULL, ST_F8}, {F_NULL, ST_F8}, {F_NULL, ST_F8}, {F_ill, ST_ILL}},
452 /* EV_INFO2 */ {{F_I2, ST_F6}, {F_I2, ST_F6}, {F_I2, ST_F6}, {F_I2, ST_F6}, {F_I2, ST_F6}, {F_I2, ST_F6}, {F_ill, ST_ILL}},
453 /* EV_INFO48*/ {{F_AI8, ST_F7}, {F_AI8, ST_F7}, {F_AI8, ST_F7}, {F_AI8, ST_F7}, {F_NULL, ST_F7}, {F_AI8, ST_F7}, {F_ill, ST_ILL}},
454 /* EV_INFO41*/ {{F_AI10, ST_F7}, {F_AI10, ST_F7}, {F_AI10, ST_F7}, {F_AI10, ST_F7}, {F_NULL, ST_F7}, {F_AI10, ST_F7}, {F_ill, ST_ILL}},
455 /* EV_DR */ {{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_ill, ST_ILL}},
456 /* EV_PU */ {{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_ill, ST_ILL}},
457 /* EV_DIS */ {{F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}},
458 /* 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_ill, ST_ILL}},
459 /* EV_ILL */ {{F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}, {F_ill, ST_ILL}}
462 /*---------------------------------------------------------------------------*
464 *---------------------------------------------------------------------------*/
466 ifpnp_next_state(struct l1_softc *sc, int event)
468 int currstate, newstate;
470 if(event >= N_EVENTS)
471 panic("i4b_l1fsm.c: event >= N_EVENTS\n");
473 currstate = sc->sc_I430state;
475 if(currstate >= N_STATES)
476 panic("i4b_l1fsm.c: currstate >= N_STATES\n");
478 newstate = ifpnp_state_tab[event][currstate].newstate;
480 if(newstate >= N_STATES)
481 panic("i4b_l1fsm.c: newstate >= N_STATES\n");
483 NDBGL1(L1_F_MSG, "FSM event [%s]: [%s => %s]", event_text[event],
484 state_text[currstate],
485 state_text[newstate]);
487 (*ifpnp_state_tab[event][currstate].func)(sc);
489 if(newstate == ST_ILL)
492 NDBGL1(L1_F_ERR, "FSM Illegal State ERROR, oldstate = %s, newstate = %s, event = %s!",
493 state_text[currstate],
494 state_text[newstate],
498 sc->sc_I430state = newstate;
502 /*---------------------------------------------------------------------------*
503 * return pointer to current state description
504 *---------------------------------------------------------------------------*/
506 ifpnp_printstate(struct l1_softc *sc)
508 return((char *) state_text[sc->sc_I430state]);