Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  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/CMT defaults
 19 */
 20 
 21 #include "h/types.h"
 22 #include "h/fddi.h"
 23 #include "h/smc.h"
 24 
 25 #ifndef OEM_USER_DATA
 26 #define OEM_USER_DATA   "SK-NET FDDI V2.0 Userdata"
 27 #endif
 28 
 29 #ifndef lint
 30 static const char ID_sccs[] = "@(#)smtdef.c     2.53 99/08/11 (C) SK " ;
 31 #endif
 32 
 33 /*
 34  * defaults
 35  */
 36 #define TTMS(x) ((u_long)(x)*1000L)
 37 #define TTS(x)  ((u_long)(x)*1000000L)
 38 #define TTUS(x) ((u_long)(x))
 39 
 40 #define DEFAULT_TB_MIN          TTMS(5)
 41 #define DEFAULT_TB_MAX          TTMS(50)
 42 #define DEFAULT_C_MIN           TTUS(1600)
 43 #define DEFAULT_T_OUT           TTMS(100+5)
 44 #define DEFAULT_TL_MIN          TTUS(30)
 45 #define DEFAULT_LC_SHORT        TTMS(50+5)
 46 #define DEFAULT_LC_MEDIUM       TTMS(500+20)
 47 #define DEFAULT_LC_LONG         TTS(5)+TTMS(50)
 48 #define DEFAULT_LC_EXTENDED     TTS(50)+TTMS(50)
 49 #define DEFAULT_T_NEXT_9        TTMS(200+10)
 50 #define DEFAULT_NS_MAX          TTUS(1310)
 51 #define DEFAULT_I_MAX           TTMS(25)
 52 #define DEFAULT_IN_MAX          TTMS(40)
 53 #define DEFAULT_TD_MIN          TTMS(5)
 54 #define DEFAULT_T_NON_OP        TTS(1)
 55 #define DEFAULT_T_STUCK         TTS(8)
 56 #define DEFAULT_T_DIRECT        TTMS(370)
 57 #define DEFAULT_T_JAM           TTMS(370)
 58 #define DEFAULT_T_ANNOUNCE      TTMS(2500)
 59 #define DEFAULT_D_MAX           TTUS(1617)
 60 #define DEFAULT_LEM_ALARM       (8)
 61 #define DEFAULT_LEM_CUTOFF      (7)
 62 #define DEFAULT_TEST_DONE       TTS(1)
 63 #define DEFAULT_CHECK_POLL      TTS(1)
 64 #define DEFAULT_POLL            TTMS(50)
 65 
 66 /*
 67  * LCT errors threshold
 68  */
 69 #define DEFAULT_LCT_SHORT       1
 70 #define DEFAULT_LCT_MEDIUM      3
 71 #define DEFAULT_LCT_LONG        5
 72 #define DEFAULT_LCT_EXTEND      50
 73 
 74 /* Forward declarations */
 75 void smt_reset_defaults(struct s_smc *smc, int level);
 76 static void smt_init_mib(struct s_smc *smc, int level);
 77 static int set_min_max(int maxflag, u_long mib, u_long limit, u_long *oper);
 78 
 79 void smt_set_defaults(struct s_smc *smc)
 80 {
 81         smt_reset_defaults(smc,0) ;
 82 }
 83 
 84 #define MS2BCLK(x)      ((x)*12500L)
 85 #define US2BCLK(x)      ((x)*1250L)
 86 
 87 void smt_reset_defaults(struct s_smc *smc, int level)
 88 {
 89         struct smt_config       *smt ;
 90         int                     i ;
 91         u_long                  smt_boot_time;
 92 
 93 
 94         smt_init_mib(smc,level) ;
 95 
 96         smc->os.smc_version = SMC_VERSION ;
 97         smt_boot_time = smt_get_time();
 98         for( i = 0; i < NUMMACS; i++ )
 99                 smc->sm.last_tok_time[i] = smt_boot_time ;
100         smt = &smc->s ;
101         smt->attach_s = 0 ;
102         smt->build_ring_map = 1 ;
103         smt->sas = SMT_DAS ;
104         smt->numphys = NUMPHYS ;
105         smt->pcm_tb_min = DEFAULT_TB_MIN ;
106         smt->pcm_tb_max = DEFAULT_TB_MAX ;
107         smt->pcm_c_min = DEFAULT_C_MIN ;
108         smt->pcm_t_out = DEFAULT_T_OUT ;
109         smt->pcm_tl_min = DEFAULT_TL_MIN ;
110         smt->pcm_lc_short = DEFAULT_LC_SHORT ;
111         smt->pcm_lc_medium = DEFAULT_LC_MEDIUM ;
112         smt->pcm_lc_long = DEFAULT_LC_LONG ;
113         smt->pcm_lc_extended = DEFAULT_LC_EXTENDED ;
114         smt->pcm_t_next_9 = DEFAULT_T_NEXT_9 ;
115         smt->pcm_ns_max = DEFAULT_NS_MAX ;
116         smt->ecm_i_max = DEFAULT_I_MAX ;
117         smt->ecm_in_max = DEFAULT_IN_MAX ;
118         smt->ecm_td_min = DEFAULT_TD_MIN ;
119         smt->ecm_test_done = DEFAULT_TEST_DONE ;
120         smt->ecm_check_poll = DEFAULT_CHECK_POLL ;
121         smt->rmt_t_non_op = DEFAULT_T_NON_OP ;
122         smt->rmt_t_stuck = DEFAULT_T_STUCK ;
123         smt->rmt_t_direct = DEFAULT_T_DIRECT ;
124         smt->rmt_t_jam = DEFAULT_T_JAM ;
125         smt->rmt_t_announce = DEFAULT_T_ANNOUNCE ;
126         smt->rmt_t_poll = DEFAULT_POLL ;
127         smt->rmt_dup_mac_behavior = FALSE ;  /* See Struct smt_config */
128         smt->mac_d_max = DEFAULT_D_MAX ;
129 
130         smt->lct_short = DEFAULT_LCT_SHORT ;
131         smt->lct_medium = DEFAULT_LCT_MEDIUM ;
132         smt->lct_long = DEFAULT_LCT_LONG ;
133         smt->lct_extended = DEFAULT_LCT_EXTEND ;
134 
135 #ifndef SLIM_SMT
136 #ifdef  ESS
137         if (level == 0) {
138                 smc->ess.sync_bw_available = FALSE ;
139                 smc->mib.fddiESSPayload = 0 ;
140                 smc->mib.fddiESSOverhead = 0 ;
141                 smc->mib.fddiESSMaxTNeg = (u_long)(- MS2BCLK(25)) ;
142                 smc->mib.fddiESSMinSegmentSize = 1 ;
143                 smc->mib.fddiESSCategory = SB_STATIC ;
144                 smc->mib.fddiESSSynchTxMode = FALSE ;
145                 smc->ess.raf_act_timer_poll = FALSE ;
146                 smc->ess.timer_count = 7 ;      /* first RAF alc req after 3s */
147         }
148         smc->ess.local_sba_active = FALSE ;
149         smc->ess.sba_reply_pend = NULL ;
150 #endif
151 #ifdef  SBA
152         smt_init_sba(smc,level) ;
153 #endif
154 #endif  /* no SLIM_SMT */
155 #ifdef  TAG_MODE
156         if (level == 0) {
157                 smc->hw.pci_fix_value = 0 ;
158         }
159 #endif
160 }
161 
162 /*
163  * manufacturer data
164  */
165 static const char man_data[32] =
166 /*       01234567890123456789012345678901       */
167         "xxxSK-NET FDDI SMT 7.3 - V2.8.8" ;
168 
169 static void smt_init_mib(struct s_smc *smc, int level)
170 {
171         struct fddi_mib         *mib ;
172         struct fddi_mib_p       *pm ;
173         int                     port ;
174         int                     path ;
175 
176         mib = &smc->mib ;
177         if (level == 0) {
178                 /*
179                  * set EVERYTHING to ZERO
180                  * EXCEPT hw and os
181                  */
182                 memset(((char *)smc)+
183                         sizeof(struct s_smt_os)+sizeof(struct s_smt_hw), 0,
184                         sizeof(struct s_smc) -
185                         sizeof(struct s_smt_os) - sizeof(struct s_smt_hw)) ;
186         }
187         else {
188                 mib->fddiSMTRemoteDisconnectFlag = 0 ;
189                 mib->fddiSMTPeerWrapFlag = 0 ;
190         }
191 
192         mib->fddiSMTOpVersionId = 2 ;
193         mib->fddiSMTHiVersionId = 2 ;
194         mib->fddiSMTLoVersionId = 2 ;
195         memcpy((char *) mib->fddiSMTManufacturerData,man_data,32) ;
196         if (level == 0) {
197                 strcpy(mib->fddiSMTUserData,OEM_USER_DATA) ;
198         }
199         mib->fddiSMTMIBVersionId = 1 ;
200         mib->fddiSMTMac_Ct = NUMMACS ;
201         mib->fddiSMTConnectionPolicy = POLICY_MM | POLICY_AA | POLICY_BB ;
202 
203         /*
204          * fddiSMTNonMaster_Ct and fddiSMTMaster_Ct are set in smt_fixup_mib
205          * s.sas is not set yet (is set in init driver)
206          */
207         mib->fddiSMTAvailablePaths = MIB_PATH_P | MIB_PATH_S ;
208 
209         mib->fddiSMTConfigCapabilities = 0 ;    /* no hold,no wrap_ab*/
210         mib->fddiSMTTT_Notify = 10 ;
211         mib->fddiSMTStatRptPolicy = TRUE ;
212         mib->fddiSMTTrace_MaxExpiration = SEC2MIB(7) ;
213         mib->fddiSMTMACIndexes = INDEX_MAC ;
214         mib->fddiSMTStationStatus = MIB_SMT_STASTA_SEPA ;       /* separated */
215 
216         mib->m[MAC0].fddiMACIndex = INDEX_MAC ;
217         mib->m[MAC0].fddiMACFrameStatusFunctions = FSC_TYPE0 ;
218         mib->m[MAC0].fddiMACRequestedPaths =
219                 MIB_P_PATH_LOCAL |
220                 MIB_P_PATH_SEC_ALTER |
221                 MIB_P_PATH_PRIM_ALTER ;
222         mib->m[MAC0].fddiMACAvailablePaths = MIB_PATH_P ;
223         mib->m[MAC0].fddiMACCurrentPath = MIB_PATH_PRIMARY ;
224         mib->m[MAC0].fddiMACT_MaxCapabilitiy = (u_long)(- MS2BCLK(165)) ;
225         mib->m[MAC0].fddiMACTVXCapabilitiy = (u_long)(- US2BCLK(52)) ;
226         if (level == 0) {
227                 mib->m[MAC0].fddiMACTvxValue = (u_long)(- US2BCLK(27)) ;
228                 mib->m[MAC0].fddiMACTvxValueMIB = (u_long)(- US2BCLK(27)) ;
229                 mib->m[MAC0].fddiMACT_Req = (u_long)(- MS2BCLK(165)) ;
230                 mib->m[MAC0].fddiMACT_ReqMIB = (u_long)(- MS2BCLK(165)) ;
231                 mib->m[MAC0].fddiMACT_Max = (u_long)(- MS2BCLK(165)) ;
232                 mib->m[MAC0].fddiMACT_MaxMIB = (u_long)(- MS2BCLK(165)) ;
233                 mib->m[MAC0].fddiMACT_Min = (u_long)(- MS2BCLK(4)) ;
234         }
235         mib->m[MAC0].fddiMACHardwarePresent = TRUE ;
236         mib->m[MAC0].fddiMACMA_UnitdataEnable = TRUE ;
237         mib->m[MAC0].fddiMACFrameErrorThreshold = 1 ;
238         mib->m[MAC0].fddiMACNotCopiedThreshold = 1 ;
239         /*
240          * Path attributes
241          */
242         for (path = 0 ; path < NUMPATHS ; path++) {
243                 mib->a[path].fddiPATHIndex = INDEX_PATH + path ;
244                 if (level == 0) {
245                         mib->a[path].fddiPATHTVXLowerBound =
246                                 (u_long)(- US2BCLK(27)) ;
247                         mib->a[path].fddiPATHT_MaxLowerBound =
248                                 (u_long)(- MS2BCLK(165)) ;
249                         mib->a[path].fddiPATHMaxT_Req =
250                                 (u_long)(- MS2BCLK(165)) ;
251                 }
252         }
253 
254 
255         /*
256          * Port attributes
257          */
258         pm = mib->p ;
259         for (port = 0 ; port <  NUMPHYS ; port++) {
260                 /*
261                  * set MIB pointer in phy
262                  */
263                 /* Attention: don't initialize mib pointer here! */
264                 /*  It must be initialized during phase 2 */
265                 smc->y[port].mib = NULL;
266                 mib->fddiSMTPORTIndexes[port] = port+INDEX_PORT ;
267 
268                 pm->fddiPORTIndex = port+INDEX_PORT ;
269                 pm->fddiPORTHardwarePresent = TRUE ;
270                 if (level == 0) {
271                         pm->fddiPORTLer_Alarm = DEFAULT_LEM_ALARM ;
272                         pm->fddiPORTLer_Cutoff = DEFAULT_LEM_CUTOFF ;
273                 }
274                 /*
275                  * fddiPORTRequestedPaths are set in pcmplc.c
276                  * we don't know the port type yet !
277                  */
278                 pm->fddiPORTRequestedPaths[1] = 0 ;
279                 pm->fddiPORTRequestedPaths[2] = 0 ;
280                 pm->fddiPORTRequestedPaths[3] = 0 ;
281                 pm->fddiPORTAvailablePaths = MIB_PATH_P ;
282                 pm->fddiPORTPMDClass = MIB_PMDCLASS_MULTI ;
283                 pm++ ;
284         }
285 
286         (void) smt_set_mac_opvalues(smc) ;
287 }
288 
289 int smt_set_mac_opvalues(struct s_smc *smc)
290 {
291         int     st ;
292         int     st2 ;
293 
294         st = set_min_max(1,smc->mib.m[MAC0].fddiMACTvxValueMIB,
295                 smc->mib.a[PATH0].fddiPATHTVXLowerBound,
296                 &smc->mib.m[MAC0].fddiMACTvxValue) ;
297         st |= set_min_max(0,smc->mib.m[MAC0].fddiMACT_MaxMIB,
298                 smc->mib.a[PATH0].fddiPATHT_MaxLowerBound,
299                 &smc->mib.m[MAC0].fddiMACT_Max) ;
300         st |= (st2 = set_min_max(0,smc->mib.m[MAC0].fddiMACT_ReqMIB,
301                 smc->mib.a[PATH0].fddiPATHMaxT_Req,
302                 &smc->mib.m[MAC0].fddiMACT_Req)) ;
303         if (st2) {
304                 /* Treq attribute changed remotely. So send an AIX_EVENT to the
305                  * user
306                  */
307                 AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
308                         FDDI_SMT_EVENT, (u_long) FDDI_REMOTE_T_REQ,
309                         smt_get_event_word(smc));
310         }
311         return(st) ;
312 }
313 
314 void smt_fixup_mib(struct s_smc *smc)
315 {
316 #ifdef  CONCENTRATOR
317         switch (smc->s.sas) {
318         case SMT_SAS :
319                 smc->mib.fddiSMTNonMaster_Ct = 1 ;
320                 break ;
321         case SMT_DAS :
322                 smc->mib.fddiSMTNonMaster_Ct = 2 ;
323                 break ;
324         case SMT_NAC :
325                 smc->mib.fddiSMTNonMaster_Ct = 0 ;
326                 break ;
327         }
328         smc->mib.fddiSMTMaster_Ct = NUMPHYS - smc->mib.fddiSMTNonMaster_Ct ;
329 #else
330         switch (smc->s.sas) {
331         case SMT_SAS :
332                 smc->mib.fddiSMTNonMaster_Ct = 1 ;
333                 break ;
334         case SMT_DAS :
335                 smc->mib.fddiSMTNonMaster_Ct = 2 ;
336                 break ;
337         }
338         smc->mib.fddiSMTMaster_Ct = 0 ;
339 #endif
340 }
341 
342 /*
343  * determine new setting for operational value
344  * if limit is lower than mib
345  *      use limit
346  * else
347  *      use mib
348  * NOTE : numbers are negative, negate comparison !
349  */
350 static int set_min_max(int maxflag, u_long mib, u_long limit, u_long *oper)
351 {
352         u_long  old ;
353         old = *oper ;
354         if ((limit > mib) ^ maxflag)
355                 *oper = limit ;
356         else
357                 *oper = mib ;
358         return(old != *oper) ;
359 }
360 
361 
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