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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * (C)Copyright 1998,1999 SysKonnect, | |
4 | * a business unit of Schneider & Koch & Co. Datensysteme GmbH. | |
5 | * | |
6 | * See the file "skfddi.c" for further information. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * The information in this file is provided "AS IS" without warranty. | |
14 | * | |
15 | ******************************************************************************/ | |
16 | ||
17 | /* | |
18 | SMT Event Queue Management | |
19 | */ | |
20 | ||
21 | #include "h/types.h" | |
22 | #include "h/fddi.h" | |
23 | #include "h/smc.h" | |
24 | ||
25 | #ifndef lint | |
26 | static const char ID_sccs[] = "@(#)queue.c 2.9 97/08/04 (C) SK " ; | |
27 | #endif | |
28 | ||
29 | #define PRINTF(a,b,c) | |
30 | ||
31 | /* | |
32 | * init event queue management | |
33 | */ | |
34 | void ev_init(struct s_smc *smc) | |
35 | { | |
36 | smc->q.ev_put = smc->q.ev_get = smc->q.ev_queue ; | |
37 | } | |
38 | ||
39 | /* | |
40 | * add event to queue | |
41 | */ | |
42 | void queue_event(struct s_smc *smc, int class, int event) | |
43 | { | |
44 | PRINTF("queue class %d event %d\n",class,event) ; | |
45 | smc->q.ev_put->class = class ; | |
46 | smc->q.ev_put->event = event ; | |
47 | if (++smc->q.ev_put == &smc->q.ev_queue[MAX_EVENT]) | |
48 | smc->q.ev_put = smc->q.ev_queue ; | |
49 | ||
50 | if (smc->q.ev_put == smc->q.ev_get) { | |
51 | SMT_ERR_LOG(smc,SMT_E0137, SMT_E0137_MSG) ; | |
52 | } | |
53 | } | |
54 | ||
55 | /* | |
56 | * timer_event is called from HW timer package. | |
57 | */ | |
58 | void timer_event(struct s_smc *smc, u_long token) | |
59 | { | |
60 | PRINTF("timer event class %d token %d\n", | |
61 | EV_T_CLASS(token), | |
62 | EV_T_EVENT(token)) ; | |
63 | queue_event(smc,EV_T_CLASS(token),EV_T_EVENT(token)); | |
64 | } | |
65 | ||
66 | /* | |
67 | * event dispatcher | |
68 | * while event queue is not empty | |
69 | * get event from queue | |
70 | * send command to state machine | |
71 | * end | |
72 | */ | |
73 | void ev_dispatcher(struct s_smc *smc) | |
74 | { | |
75 | struct event_queue *ev ; /* pointer into queue */ | |
76 | int class ; | |
77 | ||
78 | ev = smc->q.ev_get ; | |
79 | PRINTF("dispatch get %x put %x\n",ev,smc->q.ev_put) ; | |
80 | while (ev != smc->q.ev_put) { | |
81 | PRINTF("dispatch class %d event %d\n",ev->class,ev->event) ; | |
82 | switch(class = ev->class) { | |
83 | case EVENT_ECM : /* Entity Corordination Man. */ | |
84 | ecm(smc,(int)ev->event) ; | |
85 | break ; | |
86 | case EVENT_CFM : /* Configuration Man. */ | |
87 | cfm(smc,(int)ev->event) ; | |
88 | break ; | |
89 | case EVENT_RMT : /* Ring Man. */ | |
90 | rmt(smc,(int)ev->event) ; | |
91 | break ; | |
92 | case EVENT_SMT : | |
93 | smt_event(smc,(int)ev->event) ; | |
94 | break ; | |
95 | #ifdef CONCENTRATOR | |
96 | case 99 : | |
97 | timer_test_event(smc,(int)ev->event) ; | |
98 | break ; | |
99 | #endif | |
100 | case EVENT_PCMA : /* PHY A */ | |
101 | case EVENT_PCMB : /* PHY B */ | |
102 | default : | |
103 | if (class >= EVENT_PCMA && | |
104 | class < EVENT_PCMA + NUMPHYS) { | |
105 | pcm(smc,class - EVENT_PCMA,(int)ev->event) ; | |
106 | break ; | |
107 | } | |
108 | SMT_PANIC(smc,SMT_E0121, SMT_E0121_MSG) ; | |
109 | return ; | |
110 | } | |
111 | ||
112 | if (++ev == &smc->q.ev_queue[MAX_EVENT]) | |
113 | ev = smc->q.ev_queue ; | |
114 | ||
115 | /* Renew get: it is used in queue_events to detect overruns */ | |
116 | smc->q.ev_get = ev; | |
117 | } | |
118 | } | |
119 | ||
120 | /* | |
121 | * smt_online connects to or disconnects from the ring | |
122 | * MUST be called to initiate connection establishment | |
123 | * | |
124 | * on 0 disconnect | |
125 | * on 1 connect | |
126 | */ | |
127 | u_short smt_online(struct s_smc *smc, int on) | |
128 | { | |
129 | queue_event(smc,EVENT_ECM,on ? EC_CONNECT : EC_DISCONNECT) ; | |
130 | ev_dispatcher(smc) ; | |
807540ba | 131 | return smc->mib.fddiSMTCF_State; |
1da177e4 LT |
132 | } |
133 | ||
134 | /* | |
135 | * set SMT flag to value | |
136 | * flag flag name | |
137 | * value flag value | |
138 | * dump current flag setting | |
139 | */ | |
140 | #ifdef CONCENTRATOR | |
141 | void do_smt_flag(struct s_smc *smc, char *flag, int value) | |
142 | { | |
143 | #ifdef DEBUG | |
144 | struct smt_debug *deb; | |
145 | ||
146 | SK_UNUSED(smc) ; | |
147 | ||
148 | #ifdef DEBUG_BRD | |
149 | deb = &smc->debug; | |
150 | #else | |
151 | deb = &debug; | |
152 | #endif | |
153 | if (!strcmp(flag,"smt")) | |
154 | deb->d_smt = value ; | |
155 | else if (!strcmp(flag,"smtf")) | |
156 | deb->d_smtf = value ; | |
157 | else if (!strcmp(flag,"pcm")) | |
158 | deb->d_pcm = value ; | |
159 | else if (!strcmp(flag,"rmt")) | |
160 | deb->d_rmt = value ; | |
161 | else if (!strcmp(flag,"cfm")) | |
162 | deb->d_cfm = value ; | |
163 | else if (!strcmp(flag,"ecm")) | |
164 | deb->d_ecm = value ; | |
165 | printf("smt %d\n",deb->d_smt) ; | |
166 | printf("smtf %d\n",deb->d_smtf) ; | |
167 | printf("pcm %d\n",deb->d_pcm) ; | |
168 | printf("rmt %d\n",deb->d_rmt) ; | |
169 | printf("cfm %d\n",deb->d_cfm) ; | |
170 | printf("ecm %d\n",deb->d_ecm) ; | |
171 | #endif /* DEBUG */ | |
172 | } | |
173 | #endif |