summaryrefslogtreecommitdiff
path: root/drivers/net/npe/include/IxHssAcc.h
blob: 07bb119b0b75eec5e27dcb5411fa7bb3b09e010b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
/**
 * @file IxHssAcc.h
 * 
 * @date 07-DEC-2001
 *
 * @brief This file contains the public API of the IXP400 HSS Access
 * component
 *
 * 
 * @par
 * IXP400 SW Release version 2.0
 * 
 * -- Copyright Notice --
 * 
 * @par
 * Copyright 2001-2005, Intel Corporation.
 * All rights reserved.
 * 
 * @par
 * 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.
 * 3. Neither the name of the Intel Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * @par
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 * 
 * @par
 * -- End of Copyright Notice --
*/
 
/* ------------------------------------------------------
   Doxygen group definitions
   ------------------------------------------------------ */
/**
 * @defgroup IxHssAccAPI IXP400 HSS Access (IxHssAcc) API
 *
 * @brief The public API for the IXP400 HssAccess component
 *
 * IxHssAcc is the access layer to the HSS packetised and channelised
 * services
 * 
 * <b> Design Notes </b><br>
 * <UL>
 * <LI>When a packet-pipe is configured for 56Kbps RAW mode, byte alignment of 
 *     the transmitted data is not preserved. All raw data that is transmitted 
 *     will be received in proper order by the receiver, but the first bit of 
 *     the packet may be seen at any offset within a byte; all subsequent bytes 
 *     will have the same offset for the duration of the packet. The same offset 
 *     also applies to all subsequent packets received on the packet-pipe too. 
 *     (Similar results will occur for data received from remote end.) While 
 *     this behavior will also occur for 56Kbps HDLC mode, the HDLC 
 *     encoding/decoding will preserve the original byte alignment at the 
 *     receiver end.
 * </UL>
 *
 * <b> 56Kbps Packetised Service Bandwidth Limitation </b><br>
 * <UL>
 * <LI>IxHssAcc supports 56Kbps packetised service at a maximum aggregate rate
 *     for all HSS ports/HDLC channels of 12.288Mbps[1] in each direction, i.e.
 *     it supports 56Kbps packetised service on up to 8 T1 trunks. It does
 *     not support 56Kbps packetised service on 8 E1 trunks (i.e. 4 trunks per 
 *     HSS port) unless those trunks are running 'fractional E1' with maximum 
 *     aggregate rate of 12.288 Mbps in each direction.<br>
 *     [1] 12.288Mbps = 1.536Mbp * 8 T1
 * </UL>
 * @{ */

#ifndef IXHSSACC_H
#define IXHSSACC_H

#include "IxOsal.h"

/*
 * #defines for function return types, etc.
 */

/**
 * @def IX_HSSACC_TSLOTS_PER_HSS_PORT
 *
 * @brief The max number of TDM timeslots supported per HSS port - 4E1's =
 *  32x4 = 128 
 */
#define IX_HSSACC_TSLOTS_PER_HSS_PORT 128

/* -----------------------------------------------------------
   The following are HssAccess return values returned through 
   service interfaces. The globally defined IX_SUCCESS (0) and
   IX_FAIL (1) in IxOsalTypes.h are also used.
   ----------------------------------------------------------- */
/**
 * @def IX_HSSACC_PARAM_ERR
 *
 * @brief HssAccess function return value for a parameter error
 */
#define IX_HSSACC_PARAM_ERR 2

/**
 * @def IX_HSSACC_RESOURCE_ERR
 *
 * @brief HssAccess function return value for a resource error
 */
#define IX_HSSACC_RESOURCE_ERR 3

/**
 * @def IX_HSSACC_PKT_DISCONNECTING
 *
 * @brief Indicates that a disconnect call is progressing and will 
 * disconnect soon
 */
#define IX_HSSACC_PKT_DISCONNECTING 4

/**
 * @def IX_HSSACC_Q_WRITE_OVERFLOW
 *
 * @brief Indicates that an attempt to Tx or to replenish an 
 * RxFree Q failed due to Q overflow.  
 */
#define IX_HSSACC_Q_WRITE_OVERFLOW 5

/* -------------------------------------------------------------------
   The following errors are HSS/NPE errors returned on error retrieval
   ------------------------------------------------------------------- */
/**
 * @def IX_HSSACC_NO_ERROR
 *
 * @brief HSS port no error present
 */
#define IX_HSSACC_NO_ERROR 0

/**
 * @def IX_HSSACC_TX_FRM_SYNC_ERR
 *
 * @brief HSS port TX Frame Sync error
 */
#define IX_HSSACC_TX_FRM_SYNC_ERR 1

/**
 * @def IX_HSSACC_TX_OVER_RUN_ERR
 *
 * @brief HSS port TX over-run error
 */
#define IX_HSSACC_TX_OVER_RUN_ERR 2

/**
 * @def IX_HSSACC_CHANNELISED_SW_TX_ERR
 *
 * @brief NPE software error in channelised TX
 */
#define IX_HSSACC_CHANNELISED_SW_TX_ERR 3

/**
 * @def IX_HSSACC_PACKETISED_SW_TX_ERR
 *
 * @brief NPE software error in packetised TX
 */
#define IX_HSSACC_PACKETISED_SW_TX_ERR 4

/**
 * @def IX_HSSACC_RX_FRM_SYNC_ERR
 *
 * @brief HSS port RX Frame Sync error
 */
#define IX_HSSACC_RX_FRM_SYNC_ERR 5

/**
 * @def IX_HSSACC_RX_OVER_RUN_ERR
 *
 * @brief HSS port RX over-run error
 */
#define IX_HSSACC_RX_OVER_RUN_ERR 6

/**
 * @def IX_HSSACC_CHANNELISED_SW_RX_ERR
 *
 * @brief NPE software error in channelised RX
 */
#define IX_HSSACC_CHANNELISED_SW_RX_ERR 7

/**
 * @def IX_HSSACC_PACKETISED_SW_RX_ERR
 *
 * @brief NPE software error in packetised TX
 */
#define IX_HSSACC_PACKETISED_SW_RX_ERR 8

/* -----------------------------------
   Packetised service specific defines
   ----------------------------------- */

/**
 * @def IX_HSSACC_PKT_MIN_RX_MBUF_SIZE
 *
 * @brief Minimum size of the Rx mbuf in bytes which the client must supply 
 * to the component. 
 */
#define IX_HSSACC_PKT_MIN_RX_MBUF_SIZE 64

/* --------------------------------------------------------------------
   Enumerated Types - these enumerated values may be used in setting up
   the contents of hardware registers
   -------------------------------------------------------------------- */
/**
 * @enum IxHssAccHssPort
 * @brief The HSS port ID - There are two identical ports (0-1). 
 * 
 */
typedef enum
{
    IX_HSSACC_HSS_PORT_0,   /**< HSS Port 0 */
    IX_HSSACC_HSS_PORT_1,   /**< HSS Port 1 */
    IX_HSSACC_HSS_PORT_MAX  /**< Delimiter for error checks */
} IxHssAccHssPort;

/**
 * @enum IxHssAccHdlcPort
 * @brief The HDLC port ID - There are four identical HDLC ports (0-3) per 
 * HSS port and they correspond to the 4 E1/T1 trunks.
 * 
 */
typedef enum
{
   IX_HSSACC_HDLC_PORT_0,   /**< HDLC Port 0 */
   IX_HSSACC_HDLC_PORT_1,   /**< HDLC Port 1 */
   IX_HSSACC_HDLC_PORT_2,   /**< HDLC Port 2 */
   IX_HSSACC_HDLC_PORT_3,   /**< HDLC Port 3 */
   IX_HSSACC_HDLC_PORT_MAX  /**< Delimiter for error checks */
} IxHssAccHdlcPort;

/**
 * @enum IxHssAccTdmSlotUsage
 * @brief The HSS TDM stream timeslot assignment types
 *
 */
typedef enum
{
    IX_HSSACC_TDMMAP_UNASSIGNED,    /**< Unassigned */
    IX_HSSACC_TDMMAP_HDLC,          /**< HDLC - packetised */
    IX_HSSACC_TDMMAP_VOICE56K,      /**< Voice56K - channelised */
    IX_HSSACC_TDMMAP_VOICE64K,      /**< Voice64K - channelised */
    IX_HSSACC_TDMMAP_MAX            /**< Delimiter for error checks */
} IxHssAccTdmSlotUsage;

/**
 * @enum IxHssAccFrmSyncType
 * @brief The HSS frame sync pulse type
 *
 */
typedef enum
{
    IX_HSSACC_FRM_SYNC_ACTIVE_LOW,   /**< Frame sync is sampled low */
    IX_HSSACC_FRM_SYNC_ACTIVE_HIGH,  /**< sampled high */
    IX_HSSACC_FRM_SYNC_FALLINGEDGE,  /**< sampled on a falling edge */
    IX_HSSACC_FRM_SYNC_RISINGEDGE,   /**< sampled on a rising edge */
    IX_HSSACC_FRM_SYNC_TYPE_MAX      /**< Delimiter for error checks */
} IxHssAccFrmSyncType;

/**
 * @enum IxHssAccFrmSyncEnable
 * @brief The IxHssAccFrmSyncEnable determines how the frame sync pulse is
 * used
 * */
typedef enum
{
    IX_HSSACC_FRM_SYNC_INPUT,          /**< Frame sync is sampled as an input */
    IX_HSSACC_FRM_SYNC_INVALID_VALUE,  /**< 1 is not used */
    IX_HSSACC_FRM_SYNC_OUTPUT_FALLING, /**< Frame sync is an output generated 
					  off a falling clock edge */
    IX_HSSACC_FRM_SYNC_OUTPUT_RISING,  /**< Frame sync is an output generated 
					  off a rising clock edge */
    IX_HSSACC_FRM_SYNC_ENABLE_MAX      /**< Delimiter for error checks */
} IxHssAccFrmSyncEnable;

/**
 * @enum IxHssAccClkEdge
 * @brief IxHssAccClkEdge is used to determine the clk edge to use for 
 * framing and data
 *
 */
typedef enum
{
    IX_HSSACC_CLK_EDGE_FALLING,  /**< Clock sampled off a falling edge */
    IX_HSSACC_CLK_EDGE_RISING,   /**< Clock sampled off a rising edge */
    IX_HSSACC_CLK_EDGE_MAX       /**< Delimiter for error checks */
} IxHssAccClkEdge;

/**
 * @enum IxHssAccClkDir
 * @brief The HSS clock direction
 *
 */
typedef enum
{
    IX_HSSACC_SYNC_CLK_DIR_INPUT,    /**< Clock is an input */
    IX_HSSACC_SYNC_CLK_DIR_OUTPUT,   /**< Clock is an output */
    IX_HSSACC_SYNC_CLK_DIR_MAX       /**< Delimiter for error checks */
} IxHssAccClkDir;

/**
 * @enum IxHssAccFrmPulseUsage
 * @brief The HSS frame pulse usage
 *
 */
typedef enum
{
    IX_HSSACC_FRM_PULSE_ENABLED,     /**< Generate/Receive frame pulses */
    IX_HSSACC_FRM_PULSE_DISABLED,    /**< Disregard frame pulses */
    IX_HSSACC_FRM_PULSE_MAX          /**< Delimiter for error checks */
} IxHssAccFrmPulseUsage;

/**
 * @enum IxHssAccDataRate
 * @brief The HSS Data rate in relation to the clock
 *
 */
typedef enum
{
    IX_HSSACC_CLK_RATE,      /**< Data rate is at the configured clk speed */
    IX_HSSACC_HALF_CLK_RATE, /**< Data rate is half the configured clk speed */
    IX_HSSACC_DATA_RATE_MAX  /**< Delimiter for error checks */
} IxHssAccDataRate;

/**
 * @enum IxHssAccDataPolarity
 * @brief The HSS data polarity type
 *
 */
typedef enum
{
    IX_HSSACC_DATA_POLARITY_SAME,   /**< Don't invert data between NPE and 
				       HSS FIFOs */
    IX_HSSACC_DATA_POLARITY_INVERT, /**< Invert data between NPE and HSS 
				       FIFOs */
    IX_HSSACC_DATA_POLARITY_MAX     /**< Delimiter for error checks */
} IxHssAccDataPolarity;

/**
 * @enum IxHssAccBitEndian
 * @brief HSS Data endianness
 *
 */
typedef enum
{
    IX_HSSACC_LSB_ENDIAN,    /**< TX/RX Least Significant Bit first */
    IX_HSSACC_MSB_ENDIAN,    /**< TX/RX Most Significant Bit first */
    IX_HSSACC_ENDIAN_MAX     /**< Delimiter for the purposes of error checks */
} IxHssAccBitEndian;


/**
 * @enum IxHssAccDrainMode
 * @brief Tx pin open drain mode
 *
 */
typedef enum
{
    IX_HSSACC_TX_PINS_NORMAL,       /**< Normal mode */
    IX_HSSACC_TX_PINS_OPEN_DRAIN,   /**< Open Drain mode */
    IX_HSSACC_TX_PINS_MAX           /**< Delimiter for error checks */
} IxHssAccDrainMode;

/**
 * @enum IxHssAccSOFType
 * @brief HSS start of frame types
 *
 */
typedef enum
{
    IX_HSSACC_SOF_FBIT,  /**< Framing bit transmitted and expected on rx */
    IX_HSSACC_SOF_DATA,  /**< Framing bit not transmitted nor expected on rx */
    IX_HSSACC_SOF_MAX    /**< Delimiter for error checks */
} IxHssAccSOFType;

/**
 * @enum IxHssAccDataEnable
 * @brief IxHssAccDataEnable is used to determine whether or not to drive 
 * the data pins
 *
 */
typedef enum
{
    IX_HSSACC_DE_TRI_STATE,   /**< TRI-State the data pins */
    IX_HSSACC_DE_DATA,        /**< Push data out the data pins */
    IX_HSSACC_DE_MAX          /**< Delimiter for error checks */
} IxHssAccDataEnable;

/**
 * @enum IxHssAccTxSigType
 * @brief IxHssAccTxSigType is used to determine how to drive the data pins
 *
 */
typedef enum
{
    IX_HSSACC_TXSIG_LOW,        /**< Drive the data pins low */
    IX_HSSACC_TXSIG_HIGH,       /**< Drive the data pins high */
    IX_HSSACC_TXSIG_HIGH_IMP,   /**< Drive the data pins with high impedance */
    IX_HSSACC_TXSIG_MAX         /**< Delimiter for error checks */
} IxHssAccTxSigType;

/**
 * @enum IxHssAccFbType
 * @brief IxHssAccFbType determines how to drive the Fbit
 *
 * @warning This will only be used for T1 @ 1.544MHz
 *
 */
typedef enum
{
    IX_HSSACC_FB_FIFO,        /**< Fbit is dictated in FIFO */
    IX_HSSACC_FB_HIGH_IMP,    /**< Fbit is high impedance */
    IX_HSSACC_FB_MAX          /**< Delimiter for error checks */
} IxHssAccFbType;

/**
 * @enum IxHssAcc56kEndianness
 * @brief 56k data endianness when using the 56k type
 *
 */
typedef enum
{
    IX_HSSACC_56KE_BIT_7_UNUSED,  /**< High bit is unused */
    IX_HSSACC_56KE_BIT_0_UNUSED,  /**< Low bit is unused */
    IX_HSSACC_56KE_MAX            /**< Delimiter for error checks */
} IxHssAcc56kEndianness;

/**
 * @enum IxHssAcc56kSel
 * @brief 56k data transmission type when using the 56k type
 *
 */
typedef enum
{
    IX_HSSACC_56KS_32_8_DATA,  /**< 32/8 bit data */
    IX_HSSACC_56KS_56K_DATA,   /**< 56K data */
    IX_HSSACC_56KS_MAX         /**< Delimiter for error checks */
} IxHssAcc56kSel;


/**
 * @enum IxHssAccClkSpeed
 * @brief IxHssAccClkSpeed represents the HSS clock speeds available
 *
 */
typedef enum
{
    IX_HSSACC_CLK_SPEED_512KHZ,     /**< 512KHz */
    IX_HSSACC_CLK_SPEED_1536KHZ,    /**< 1.536MHz */
    IX_HSSACC_CLK_SPEED_1544KHZ,    /**< 1.544MHz */
    IX_HSSACC_CLK_SPEED_2048KHZ,    /**< 2.048MHz */
    IX_HSSACC_CLK_SPEED_4096KHZ,    /**< 4.096MHz */
    IX_HSSACC_CLK_SPEED_8192KHZ,    /**< 8.192MHz */
    IX_HSSACC_CLK_SPEED_MAX      /**< Delimiter for error checking */
} IxHssAccClkSpeed;

/**
 * @enum IxHssAccPktStatus
 * @brief Indicates the status of packets passed to the client
 *
 */
typedef enum
{
    IX_HSSACC_PKT_OK,              /**< Error free.*/
    IX_HSSACC_STOP_SHUTDOWN_ERROR, /**< Errored due to stop or shutdown 
				      occurrance.*/
    IX_HSSACC_HDLC_ALN_ERROR,      /**< HDLC alignment error */
    IX_HSSACC_HDLC_FCS_ERROR,       /**< HDLC Frame Check Sum error.*/
    IX_HSSACC_RXFREE_Q_EMPTY_ERROR,       /**< RxFree Q became empty 
					     while receiving this packet.*/
    IX_HSSACC_HDLC_MAX_FRAME_SIZE_EXCEEDED,      /**< HDLC frame size 
						   received is greater than
						   max specified at connect.*/
    IX_HSSACC_HDLC_ABORT_ERROR,   /**< HDLC frame received is invalid due to an 
				   abort sequence received.*/
    IX_HSSACC_DISCONNECT_IN_PROGRESS     /**< Packet returned
					    because a disconnect is in progress */
} IxHssAccPktStatus;


/**
 * @enum IxHssAccPktCrcType
 * @brief HDLC CRC type
 *
 */
typedef enum
{
    IX_HSSACC_PKT_16_BIT_CRC = 16,  /**< 16 bit CRC is being used */
    IX_HSSACC_PKT_32_BIT_CRC = 32   /**< 32 bit CRC is being used */
} IxHssAccPktCrcType;

/**
 * @enum IxHssAccPktHdlcIdleType
 * @brief HDLC idle transmission type
 *
 */
typedef enum
{
    IX_HSSACC_HDLC_IDLE_ONES,    /**< idle tx/rx will be a succession of ones */
    IX_HSSACC_HDLC_IDLE_FLAGS    /**< idle tx/rx will be repeated flags */
} IxHssAccPktHdlcIdleType;

/**
 * @brief Structure containing HSS port configuration parameters
 *
 * Note: All of these are used for TX. Only some are specific to RX.
 *
 */
typedef struct
{
    IxHssAccFrmSyncType frmSyncType;     /**< frame sync pulse type (tx/rx) */
    IxHssAccFrmSyncEnable frmSyncIO;     /**< how the frame sync pulse is 
					    used (tx/rx) */
    IxHssAccClkEdge frmSyncClkEdge;      /**< frame sync clock edge type 
					    (tx/rx) */
    IxHssAccClkEdge dataClkEdge;         /**< data clock edge type (tx/rx) */
    IxHssAccClkDir clkDirection;         /**< clock direction (tx/rx) */
    IxHssAccFrmPulseUsage frmPulseUsage; /**< whether to use the frame sync 
					    pulse or not (tx/rx) */
    IxHssAccDataRate dataRate;           /**< data rate in relation to the 
					    clock (tx/rx) */
    IxHssAccDataPolarity dataPolarity;   /**< data polarity type (tx/rx) */
    IxHssAccBitEndian dataEndianness;    /**< data endianness (tx/rx) */
    IxHssAccDrainMode drainMode;         /**< tx pin open drain mode (tx) */
    IxHssAccSOFType fBitUsage;           /**< start of frame types (tx/rx) */
    IxHssAccDataEnable dataEnable;       /**< whether or not to drive the data 
					    pins (tx) */
    IxHssAccTxSigType voice56kType;      /**< how to drive the data pins for 
					    voice56k type (tx) */
    IxHssAccTxSigType unassignedType;    /**< how to drive the data pins for 
					    unassigned type (tx) */
    IxHssAccFbType fBitType;             /**< how to drive the Fbit (tx) */
    IxHssAcc56kEndianness voice56kEndian;/**< 56k data endianness when using 
					    the 56k type (tx) */
    IxHssAcc56kSel voice56kSel;          /**< 56k data transmission type when 
					    using the 56k type (tx) */
    unsigned frmOffset;                  /**< frame pulse offset in bits wrt 
					    the first timeslot (0-1023) (tx/rx) */
    unsigned maxFrmSize;                 /**< frame size in bits (1-1024) 
					    (tx/rx) */
} IxHssAccPortConfig;

/**
 * @brief Structure containing HSS configuration parameters
 *
 */
typedef struct
{
    IxHssAccPortConfig txPortConfig; /**< HSS tx port configuration */
    IxHssAccPortConfig rxPortConfig; /**< HSS rx port configuration */
    unsigned numChannelised;         /**< The number of channelised 
					timeslots (0-32) */
    unsigned hssPktChannelCount;     /**< The number of packetised 
					clients (0 - 4) */
    UINT8 channelisedIdlePattern;    /**< The byte to be transmitted on 
					channelised service when there 
					is no client data to tx */
    BOOL loopback;                   /**< The HSS loopback state */
    unsigned packetizedIdlePattern;  /**< The data to be transmitted on 
					packetised service when there is 
					no client data to tx */
    IxHssAccClkSpeed clkSpeed;       /**< The HSS clock speed */
} IxHssAccConfigParams;

/**
 * @brief This structure contains 56Kbps, HDLC-mode configuration parameters
 *
 */
typedef struct
{
    BOOL hdlc56kMode;                    /**< 56kbps(TRUE)/64kbps(FALSE) HDLC */
    IxHssAcc56kEndianness hdlc56kEndian; /**< 56kbps data endianness 
					    - ignored if hdlc56kMode is FALSE*/
    BOOL hdlc56kUnusedBitPolarity0;      /**< The polarity '0'(TRUE)/'1'(FALSE) of the unused
					   bit while in 56kbps mode
					   - ignored if hdlc56kMode is FALSE*/
} IxHssAccHdlcMode;

/**
 * @brief This structure contains information required by the NPE to 
 * configure the HDLC co-processor
 *
 */
typedef struct
{
    IxHssAccPktHdlcIdleType hdlcIdleType;   /**< What to transmit when a HDLC port is idle */
    IxHssAccBitEndian dataEndian;           /**< The HDLC data endianness */
    IxHssAccPktCrcType crcType;             /**< The CRC type to be used for this HDLC port */
} IxHssAccPktHdlcFraming;

/**
 * @typedef UINT32 IxHssAccPktUserId
 *
 * @brief The client supplied value which will be supplied as a parameter
 * with a given callback.
 *
 * This value will be passed into the ixHssAccPktPortConnect function once each
 * with given callbacks.  This value will then be passed back to the client
 * as one of the parameters to each of these callbacks, 
 * when these callbacks are called.
 */
typedef UINT32 IxHssAccPktUserId;


/**
 * @typedef IxHssAccLastErrorCallback
 * @brief Prototype of the clients function to accept notification of the 
 * last error
 *
 * This function is registered through the config. The client will initiate
 * the last error retrieval. The HssAccess component will send a message to
 * the NPE through the NPE Message Handler. When a response to the read is
 * received, the NPE Message Handler will callback the HssAccess component
 * which will execute this function in the same IxNpeMh context. The client
 * will be passed the last error and the related service port (packetised
 * 0-3, channelised 0)
 *
 * @param lastHssError unsigned [in] - The last Hss error registered that
 *                                      has been registered.
 * @param servicePort unsigned [in] - This is the service port number.  
 *                                     (packetised 0-3, channelised 0) 
 * 
 * @return void
 */
typedef void (*IxHssAccLastErrorCallback) (unsigned lastHssError, 
					   unsigned servicePort);

/**
 * @typedef IxHssAccPktRxCallback
 * @brief  Prototype of the clients function to accept notification of 
 * packetised rx
 *
 * This function is registered through the ixHssAccPktPortConnect. hssPktAcc will pass
 * received data in the form of mbufs to the client.  The mbuf passed back
 * to the client could contain a chain of buffers, depending on the packet
 * size received. 
 * 
 * @param *buffer @ref IX_OSAL_MBUF [in] - This is the mbuf which contains the 
 * payload received.
 * @param numHssErrs unsigned [in] - This is the number of hssErrors 
 * the Npe has received
 * @param pktStatus @ref IxHssAccPktStatus [in] - This is the status of the 
 * mbuf that has been received.
 * @param rxUserId @ref IxHssAccPktUserId [in] - This is the client supplied value 
 * passed in at ixHssAccPktPortConnect time which is now returned to the client.			       
 * 
 * @return void
 */
typedef void (*IxHssAccPktRxCallback) (IX_OSAL_MBUF *buffer, 
				       unsigned numHssErrs, 
				       IxHssAccPktStatus pktStatus, 
				       IxHssAccPktUserId rxUserId);

/**
 * @typedef IxHssAccPktRxFreeLowCallback
 * @brief Prototype of the clients function to accept notification of 
 * requirement of more Rx Free buffers
 *
 * The client can choose to register a callback of this type when
 * calling a connecting. This function is registered through the ixHssAccPktPortConnect. 
 * If defined, the access layer will provide the trigger for
 * this callback. The callback will be responsible for supplying mbufs to
 * the access layer for use on the receive path from the HSS using
 * ixHssPktAccFreeBufReplenish. 
 *
 * @return void
 */
typedef void (*IxHssAccPktRxFreeLowCallback) (IxHssAccPktUserId rxFreeLowUserId);

/**
 * @typedef IxHssAccPktTxDoneCallback
 * @brief  Prototype of the clients function to accept notification of 
 * completion with Tx buffers
 *
 * This function is registered through the ixHssAccPktPortConnect.  It enables
 * the hssPktAcc to pass buffers back to the client
 * when transmission is complete.
 *
 * @param *buffer @ref IX_OSAL_MBUF [in] - This is the mbuf which contained 
 * the payload that was for Tx.
 * @param numHssErrs unsigned [in] - This is the number of hssErrors 
 * the Npe has received
 * @param pktStatus @ref IxHssAccPktStatus [in] - This is the status of the 
 * mbuf that has been transmitted.
 * @param txDoneUserId @ref IxHssAccPktUserId [in] - This is the client supplied value 
 * passed in at ixHssAccPktPortConnect time which is now returned to the client.	 
 *
 * @return void
 */
typedef void (*IxHssAccPktTxDoneCallback) (IX_OSAL_MBUF *buffer, 
					   unsigned numHssErrs,
					   IxHssAccPktStatus pktStatus, 
					   IxHssAccPktUserId txDoneUserId);

/**
 * @typedef IxHssAccChanRxCallback
 * @brief Prototype of the clients function to accept notification of 
 * channelised rx
 *
 * This callback, if defined by the client in the connect, will get called
 * in the context of an IRQ. The IRQ will be triggered when the hssSyncQMQ
 * is not empty. The queued entry will be dequeued and this function will
 * be executed.
 *
 * @param hssPortId @ref IxHssAccHssPort - The HSS port Id. There are two
 * identical ports (0-1).
 * @param txOffset unsigned [in] - an offset indicating from where within
 * the txPtrList the NPE is currently transmitting from.
 * @param rxOffset unsigned [in] - an offset indicating where within the
 * receive buffers the NPE has just written the received data to.
 * @param numHssErrs unsigned [in] - This is the number of hssErrors 
 * the Npe has received
 *
 * @return void
 */
typedef void (*IxHssAccChanRxCallback) (IxHssAccHssPort hssPortId,
					unsigned rxOffset, 
					unsigned txOffset, 
					unsigned numHssErrs);

/*
 * Prototypes for interface functions.
 */

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccPortInit (IxHssAccHssPort hssPortId, 
               IxHssAccConfigParams *configParams, 
               IxHssAccTdmSlotUsage *tdmMap, 
               IxHssAccLastErrorCallback lastHssErrorCallback)
 *
 * @brief Initialise a HSS port. No channelised or packetised connections
 * should exist in the HssAccess layer while this interface is being called.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param *configParams @ref IxHssAccConfigParams [in] - A pointer to the HSS 
 * configuration structure
 * @param *tdmMap @ref IxHssAccTdmSlotUsage [in] - A pointer to an array of size
 * IX_HSSACC_TSLOTS_PER_HSS_PORT, defining the slot usage over the HSS port
 * @param lastHssErrorCallback @ref IxHssAccLastErrorCallback [in] - Client 
 * callback to report last error
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccPortInit (IxHssAccHssPort hssPortId, 
		  IxHssAccConfigParams *configParams, 
		  IxHssAccTdmSlotUsage *tdmMap, 
		  IxHssAccLastErrorCallback lastHssErrorCallback);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccLastErrorRetrievalInitiate (
               IxHssAccHssPort hssPortId)
 *
 * @brief Initiate the retrieval of the last HSS error. The HSS port
 * should be configured before attempting to call this interface.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - the HSS port ID
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccLastErrorRetrievalInitiate (IxHssAccHssPort hssPortId);


/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccInit ()
 *
 * @brief This function is responsible for initialising resources for use
 * by the packetised and channelised clients. It should be called after 
 * HSS NPE image has been downloaded into NPE-A and before any other
 * HssAccess interface is called. 
 * No other HssAccPacketised interface should be called while this interface
 * is being processed.
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_RESOURCE_ERR The function did not execute successfully due
 *                          to a resource error 
 */
PUBLIC IX_STATUS 
ixHssAccInit (void);


/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn ixHssAccPktPortConnect (IxHssAccHssPort hssPortId, 
			IxHssAccHdlcPort hdlcPortId, 
			BOOL hdlcFraming, 
			IxHssAccHdlcMode hdlcMode,
			BOOL hdlcBitInvert,
			unsigned blockSizeInWords,
			UINT32 rawIdleBlockPattern,
			IxHssAccPktHdlcFraming hdlcTxFraming, 
			IxHssAccPktHdlcFraming hdlcRxFraming, 
			unsigned frmFlagStart, 
			IxHssAccPktRxCallback rxCallback,
			IxHssAccPktUserId rxUserId, 
			IxHssAccPktRxFreeLowCallback rxFreeLowCallback, 
			IxHssAccPktUserId rxFreeLowUserId,
			IxHssAccPktTxDoneCallback txDoneCallback,
			IxHssAccPktUserId txDoneUserId) 
 *
 * @brief This function is responsible for connecting a client to one of 
 * the 4 available HDLC ports. The HSS port should be configured before 
 * attempting a connect. No other HssAccPacketised interface should be
 * called while this connect is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - This is the number of the HDLC port and 
 * it corresponds to the physical E1/T1 trunk i.e. 0, 1, 2, 3 
 * @param hdlcFraming BOOL [in] - This value determines whether the service 
 * will use HDLC data or the debug, raw data type i.e. no HDLC processing
 * @param hdlcMode @ref IxHssAccHdlcMode [in] - This structure contains 56Kbps, HDLC-mode
 * configuration parameters
 * @param hdlcBitInvert BOOL [in] - This value determines whether bit inversion
 * will occur between HDLC and HSS co-processors i.e. post-HDLC processing for
 * transmit and pre-HDLC processing for receive, for the specified HDLC Termination
 * Point
 * @param blockSizeInWords unsigned [in] -  The max tx/rx block size 
 * @param rawIdleBlockPattern UINT32 [in] -  Tx idle pattern in raw mode 
 * @param hdlcTxFraming @ref IxHssAccPktHdlcFraming [in] - This structure contains 
 * the following information required by the NPE to configure the HDLC 
 * co-processor for TX
 * @param hdlcRxFraming @ref IxHssAccPktHdlcFraming [in] -  This structure contains 
 * the following information required by the NPE to configure the HDLC 
 * co-processor for RX
 * @param frmFlagStart unsigned - Number of flags to precede to 
 * transmitted flags (0-2).
 * @param rxCallback @ref IxHssAccPktRxCallback [in] - Pointer to 
 * the clients packet receive function.
 * @param rxUserId @ref IxHssAccPktUserId [in] - The client supplied rx value
 * to be passed back as an argument to the supplied rxCallback
 * @param rxFreeLowCallback @ref IxHssAccPktRxFreeLowCallback [in] - Pointer to 
 * the clients Rx free buffer request function.  If NULL, assume client will 
 * trigger independently.
 * @param rxFreeLowUserId @ref IxHssAccPktUserId [in] - The client supplied RxFreeLow value
 * to be passed back as an argument to the supplied rxFreeLowCallback
 * @param txDoneCallback @ref IxHssAccPktTxDoneCallback [in] - Pointer to the 
 * clients Tx done callback function
 * @param txDoneUserId @ref IxHssAccPktUserId [in] - The client supplied txDone value
 * to be passed back as an argument to the supplied txDoneCallback
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 *         - IX_HSSACC_RESOURCE_ERR The function did not execute successfully due
 *                          to a resource error
 */
PUBLIC IX_STATUS 
ixHssAccPktPortConnect (IxHssAccHssPort hssPortId, 
			IxHssAccHdlcPort hdlcPortId, 
			BOOL hdlcFraming, 
			IxHssAccHdlcMode hdlcMode,
			BOOL hdlcBitInvert,
			unsigned blockSizeInWords,
			UINT32 rawIdleBlockPattern,
			IxHssAccPktHdlcFraming hdlcTxFraming, 
			IxHssAccPktHdlcFraming hdlcRxFraming, 
			unsigned frmFlagStart, 
			IxHssAccPktRxCallback rxCallback,
			IxHssAccPktUserId rxUserId, 
			IxHssAccPktRxFreeLowCallback rxFreeLowCallback, 
			IxHssAccPktUserId rxFreeLowUserId,
			IxHssAccPktTxDoneCallback txDoneCallback,
			IxHssAccPktUserId txDoneUserId);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccPktPortEnable (IxHssAccHssPort hssPortId, 
           IxHssAccHdlcPort hdlcPortId)
 *
 * @brief This function is responsible for enabling a packetised service
 * for the specified HSS/HDLC port combination. It enables the RX flow. The
 * client must have already connected to a packetised service and is responsible 
 * for ensuring an adequate amount of RX mbufs have been supplied to the access
 * component before enabling the packetised service. This function must be called
 * on a given port before any call to ixHssAccPktPortTx on the same port. 
 * No other HssAccPacketised interface should be called while this interface is 
 * being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1).   
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - The port id (0,1,2,3) to enable the service
 * on.
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccPktPortEnable (IxHssAccHssPort hssPortId, 
		       IxHssAccHdlcPort hdlcPortId);

/**
 * @fn IX_STATUS ixHssAccPktPortDisable (IxHssAccHssPort hssPortId, 
           IxHssAccHdlcPort hdlcPortId)
 *
 * @brief This function is responsible for disabling a packetised service
 * for the specified HSS/HDLC port combination. It disables the RX flow. 
 * The client must have already connected to and enabled a packetised service 
 * for the specified HDLC port. This disable interface can be called before a
 * disconnect, but is not required to.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - The port id (0,1,2,3) to disable 
 * the service on.
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccPktPortDisable (IxHssAccHssPort hssPortId, 
			IxHssAccHdlcPort hdlcPortId);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccPktPortDisconnect (IxHssAccHssPort hssPortId, 
           IxHssAccHdlcPort hdlcPortId)
 *
 * @brief This function is responsible for disconnecting a client from one
 * of the 4 available HDLC ports. It is not required that the Rx Flow 
 * has been disabled before calling this function.  If the RX Flow has not been
 * disabled, the disconnect will disable it before proceeding with the
 * disconnect.  No other HssAccPacketised 
 * interface should be called while this interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - This is the number of the HDLC port
 * to disconnect and it corresponds to the physical E1/T1 trunk i.e. 0, 1, 2, 3
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully 
 *         - IX_HSSACC_PKT_DISCONNECTING The function has initiated the disconnecting
 *                             procedure but it has not completed yet.
 */
PUBLIC IX_STATUS 
ixHssAccPktPortDisconnect (IxHssAccHssPort hssPortId, 
			   IxHssAccHdlcPort hdlcPortId);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn BOOL ixHssAccPktPortIsDisconnectComplete (IxHssAccHssPort hssPortId, 
           IxHssAccHdlcPort hdlcPortId)
 *
 * @brief This function is called to check if a given HSS/HDLC port 
 * combination is in a connected state or not. This function may be called 
 * at any time to determine a ports state.  No other HssAccPacketised 
 * interface should be called while this interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - This is the number of the HDLC port
 * to disconnect and it corresponds to the physical E1/T1 trunk i.e. 0, 1, 2, 3
 *
 * @return 
 *         - TRUE The state of this HSS/HDLC port combination is disconnected,
 *                so if a disconnect was called, it is now completed.
 *         - FALSE The state of this HSS/HDLC port combination is connected,
 *                so if a disconnect was called, it is not yet completed.
 */
PUBLIC BOOL 
ixHssAccPktPortIsDisconnectComplete (IxHssAccHssPort hssPortId, 
				     IxHssAccHdlcPort hdlcPortId);


/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccPktPortRxFreeReplenish (IxHssAccHssPort hssPortId, 
              IxHssAccHdlcPort hdlcPortId, 
	      IX_OSAL_MBUF *buffer)
 *
 * @brief Function which the client calls at regular intervals to provide
 * mbufs to the access component for RX. A connection should exist for
 * the specified hssPortId/hdlcPortId combination before attempting to call this 
 * interface. Also, the connection should not be in a disconnecting state.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - This is the number of the HDLC port
 * and it corresponds to the physical E1/T1 trunk i.e. 0, 1, 2, 3
 * @param *buffer @ref IX_OSAL_MBUF [in] - A pointer to a free mbuf to filled with payload.
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 *         - IX_HSSACC_RESOURCE_ERR The function did not execute successfully due
 *                          to a resource error
 *         - IX_HSSACC_Q_WRITE_OVERFLOW The function did not succeed due to a Q
 *                                      overflow
 */
PUBLIC IX_STATUS 
ixHssAccPktPortRxFreeReplenish (IxHssAccHssPort hssPortId, 
				IxHssAccHdlcPort hdlcPortId, 
				IX_OSAL_MBUF *buffer);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccPktPortTx (IxHssAccHssPort hssPortId, 
    IxHssAccHdlcPort hdlcPortId, 
    IX_OSAL_MBUF *buffer)
 *
 * @brief Function which the client calls when it wants to transmit
 * packetised data. An enabled connection should exist on the specified
 * hssPortId/hdlcPortId combination before attempting to call this interface.
 * No other HssAccPacketised 
 * interface should be called while this interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param hdlcPortId @ref IxHssAccHdlcPort [in] - This is the number of the HDLC port
 * and it corresponds to the physical E1/T1 trunk i.e. 0, 1, 2, 3
 * @param *buffer @ref IX_OSAL_MBUF [in] - A pointer to a chain of mbufs which the
 * client has filled with the payload
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 *         - IX_HSSACC_RESOURCE_ERR The function did not execute successfully due
 *                          to a resource error. See note.
 *         - IX_HSSACC_Q_WRITE_OVERFLOW The function did not succeed due to a Q
 *                                      overflow
 *
 * @note IX_HSSACC_RESOURCE_ERR is returned when a free descriptor cannot be
 * obtained to send the chain of mbufs to the NPE.  This is a normal scenario.
 * HssAcc has a pool of descriptors and this error means that they are currently
 * all in use.
 * The recommended approach to this is to retry until a descriptor becomes free
 * and the packet is successfully transmitted.
 * Alternatively, the user could wait until the next IxHssAccPktTxDoneCallback
 * callback is triggered, and then retry, as it is this event that causes a
 * transmit descriptor to be freed. 
 */
PUBLIC IX_STATUS 
ixHssAccPktPortTx (IxHssAccHssPort hssPortId, 
		   IxHssAccHdlcPort hdlcPortId, 
		   IX_OSAL_MBUF *buffer);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccChanConnect (IxHssAccHssPort hssPortId, 
           unsigned bytesPerTSTrigger, 
	   UINT8 *rxCircular, 
	   unsigned numRxBytesPerTS, 
	   UINT32 *txPtrList, 
	   unsigned numTxPtrLists, 
	   unsigned numTxBytesPerBlk, 
	   IxHssAccChanRxCallback rxCallback)
 *
 * @brief This function allows the client to connect to the Tx/Rx NPE
 * Channelised Service. There can only be one client per HSS port. The
 * client is responsible for ensuring that the HSS port is configured
 * appropriately before its connect request. No other HssAccChannelised 
 * interface should be called while this interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param bytesPerTSTrigger unsigned [in] - The NPE will trigger the access
 * component after bytesPerTSTrigger have been received for all trunk
 * timeslots. This figure is a multiple of 8 e.g. 8 for 1ms trigger, 16 for
 * 2ms trigger.
 * @param *rxCircular UINT8 [in] - A pointer to memory allocated by the
 * client to be filled by data received. The buffer at this address is part
 * of a pool of buffers to be accessed in a circular fashion. This address
 * will be written to by the NPE. Therefore, it needs to be a physical address.
 * @param numRxBytesPerTS unsigned [in] - The number of bytes allocated per
 * timeslot within the receive memory. This figure will depend on the
 * latency of the system. It needs to be deep enough for data to be read by
 * the client before the NPE re-writes over that memory e.g. if the client
 * samples at a rate of 40bytes per timeslot, numRxBytesPerTS may need to
 * be 40bytes * 3. This would give the client 3 * 5ms of time before
 * received data is over-written.
 * @param *txPtrList UINT32 [in] - The address of an area of contiguous
 * memory allocated by the client to be populated with pointers to data for
 * transmission. Each pointer list contains a pointer per active channel.
 * The txPtrs will point to data to be transmitted by the NPE. Therefore,
 * they must point to physical addresses.
 * @param numTxPtrLists unsigned [in] - The number of pointer lists in
 * txPtrList. This figure is dependent on jitter.
 * @param numTxBytesPerBlk unsigned [in] - The size of the Tx data, in
 * bytes, that each pointer within the PtrList points to.
 * @param rxCallback @ref IxHssAccChanRxCallback [in] - A client function
 * pointer to be called back to handle the actual tx/rx of channelised
 * data. If this is not NULL, an ISR will call this function. If this
 * pointer is NULL, it implies that the client will use a polling mechanism
 * to detect when the tx and rx of channelised data is to occur. The client
 * will use hssChanAccStatus for this.
 *
 * @return
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
 
PUBLIC IX_STATUS 
ixHssAccChanConnect (IxHssAccHssPort hssPortId, 
		     unsigned bytesPerTSTrigger, 
		     UINT8 *rxCircular, 
		     unsigned numRxBytesPerTS, 
		     UINT32 *txPtrList, 
		     unsigned numTxPtrLists, 
		     unsigned numTxBytesPerBlk, 
		     IxHssAccChanRxCallback rxCallback);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccChanPortEnable (IxHssAccHssPort hssPortId)
 *
 * @brief This function is responsible for enabling a channelised service
 * for the specified HSS port. It enables the NPE RX flow. The client must
 * have already connected to a channelised service before enabling the
 * channelised service. No other HssAccChannelised 
 * interface should be called while this interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 *
 * @return
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccChanPortEnable (IxHssAccHssPort hssPortId);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccChanPortDisable (IxHssAccHssPort hssPortId)
 *
 * @brief This function is responsible for disabling a channelised service
 * for the specified HSS port. It disables the NPE RX flow. The client must
 * have already connected to and enabled a channelised service for the
 * specified HSS port. This disable interface can be called before a
 * disconnect, but is not required to. No other HssAccChannelised 
 * interface should be called while this interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccChanPortDisable (IxHssAccHssPort hssPortId);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccChanDisconnect (IxHssAccHssPort hssPortId)
 *
 * @brief This function allows the client to Disconnect from a channelised
 * service. If the NPE RX Flow has not been disabled, the disconnect will
 * disable it before proceeding with other disconnect functionality.
 * No other HssAccChannelised interface should be called while this 
 * interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccChanDisconnect (IxHssAccHssPort hssPortId);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn IX_STATUS ixHssAccChanStatusQuery (IxHssAccHssPort hssPortId, 
           BOOL *dataRecvd, 
	   unsigned *rxOffset, 
	   unsigned *txOffset, 
	   unsigned *numHssErrs)
 *
 * @brief This function is called by the client to query whether or not
 * channelised data has been received. If there is, hssChanAcc will return
 * the details in the output parameters. An enabled connection should
 * exist on the specified hssPortId before attempting to call this interface.  
 * No other HssAccChannelised interface should be called while this 
 * interface is being processed.
 *
 * @param hssPortId @ref IxHssAccHssPort [in] - The HSS port Id. There are two
 * identical ports (0-1). 
 * @param *dataRecvd BOOL [out] - This BOOL indicates to the client whether
 * or not the access component has read any data for the client. If
 * FALSE, the other output parameters will not have been written to.
 * @param *rxOffset unsigned [out] - An offset to indicate to the client
 * where within the receive buffers the NPE has just written the received
 * data to.
 * @param *txOffset unsigned [out] - An offset to indicate to the client
 * from where within the txPtrList the NPE is currently transmitting from
 * @param *numHssErrs unsigned [out] - The total number of HSS port errors
 * since initial port configuration
 *
 *
 * @return 
 *         - IX_SUCCESS The function executed successfully
 *         - IX_FAIL The function did not execute successfully
 *         - IX_HSSACC_PARAM_ERR The function did not execute successfully due to a
 *                          parameter error
 */
PUBLIC IX_STATUS 
ixHssAccChanStatusQuery (IxHssAccHssPort hssPortId, 
			 BOOL *dataRecvd, 
			 unsigned *rxOffset, 
			 unsigned *txOffset, 
			 unsigned *numHssErrs);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn void ixHssAccShow (void)
 *
 * @brief This function will display the current state of the IxHssAcc
 * component. The output is sent to stdout.
 *
 * @return void
 */
PUBLIC void 
ixHssAccShow (void);

/**
 *
 * @ingroup IxHssAccAPI
 *
 * @fn void ixHssAccStatsInit (void)
 *
 * @brief This function will reset the IxHssAcc statistics.
 *
 * @return void
 */
PUBLIC void 
ixHssAccStatsInit (void);

#endif /* IXHSSACC_H */

/**
 * @} defgroup IxHssAcc
 */