summaryrefslogtreecommitdiffstats
path: root/drivers/char/rio/riotable.c
blob: 991119c9f473ef81a8f8691be7860b52af3bd38d (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
/*
** -----------------------------------------------------------------------------
**
**  Perle Specialix driver for Linux
**  Ported from existing RIO Driver for SCO sources.
 *
 *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**	Module		: riotable.c
**	SID		: 1.2
**	Last Modified	: 11/6/98 10:33:47
**	Retrieved	: 11/6/98 10:33:50
**
**  ident @(#)riotable.c	1.2
**
** -----------------------------------------------------------------------------
*/
#ifdef SCCS_LABELS
static char *_riotable_c_sccs_ = "@(#)riotable.c	1.2";
#endif

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/string.h>

#include <asm/io.h>
#include <asm/system.h>
#include <asm/string.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>

#include <linux/termios.h>
#include <linux/serial.h>

#include <linux/generic_serial.h>


#include "linux_compat.h"
#include "rio_linux.h"
#include "pkt.h"
#include "daemon.h"
#include "rio.h"
#include "riospace.h"
#include "cmdpkt.h"
#include "map.h"
#include "rup.h"
#include "port.h"
#include "riodrvr.h"
#include "rioinfo.h"
#include "func.h"
#include "errors.h"
#include "pci.h"

#include "parmmap.h"
#include "unixrup.h"
#include "board.h"
#include "host.h"
#include "phb.h"
#include "link.h"
#include "cmdblk.h"
#include "route.h"
#include "cirrus.h"
#include "rioioctl.h"
#include "param.h"
#include "protsts.h"

/*
** A configuration table has been loaded. It is now up to us
** to sort it out and use the information contained therein.
*/
int RIONewTable(struct rio_info *p)
{
	int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
	struct Map *MapP;
	struct Map *HostMapP;
	struct Host *HostP;

	char *cptr;

	/*
	 ** We have been sent a new table to install. We need to break
	 ** it down into little bits and spread it around a bit to see
	 ** what we have got.
	 */
	/*
	 ** Things to check:
	 ** (things marked 'xx' aren't checked any more!)
	 ** (1) That there are no booted Hosts/RTAs out there.
	 ** (2) That the names are properly formed
	 ** (3) That blank entries really are.
	 ** xx (4)      That hosts mentioned in the table actually exist. xx
	 ** (5) That the IDs are unique (per host).
	 ** (6) That host IDs are zero
	 ** (7) That port numbers are valid
	 ** (8) That port numbers aren't duplicated
	 ** (9) That names aren't duplicated
	 ** xx (10) That hosts that actually exist are mentioned in the table. xx
	 */
	rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
	if (p->RIOSystemUp) {	/* (1) */
		p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
		return -EBUSY;
	}

	p->RIOError.Error = NOTHING_WRONG_AT_ALL;
	p->RIOError.Entry = -1;
	p->RIOError.Other = -1;

	for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
		MapP = &p->RIOConnectTable[Entry];
		if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
			rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
			cptr = MapP->Name;	/* (2) */
			cptr[MAX_NAME_LEN - 1] = '\0';
			if (cptr[0] == '\0') {
				memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA	NN" : "HOST NN", 8);
				MapP->Name[5] = '0' + Entry / 10;
				MapP->Name[6] = '0' + Entry % 10;
			}
			while (*cptr) {
				if (*cptr < ' ' || *cptr > '~') {
					p->RIOError.Error = BAD_CHARACTER_IN_NAME;
					p->RIOError.Entry = Entry;
					return -ENXIO;
				}
				cptr++;
			}
		}

		/*
		 ** If the entry saved was a tentative entry then just forget
		 ** about it.
		 */
		if (MapP->Flags & SLOT_TENTATIVE) {
			MapP->HostUniqueNum = 0;
			MapP->RtaUniqueNum = 0;
			continue;
		}

		rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
		if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) {	/* (3) */
			if (MapP->ID || MapP->SysPort || MapP->Flags) {
				rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name);
				p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
			continue;
		}

		rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
		for (Host = 0; Host < p->RIONumHosts; Host++) {	/* (4) */
			if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) {
				HostP = &p->RIOHosts[Host];
				/*
				 ** having done the lookup, we don't really want to do
				 ** it again, so hang the host number in a safe place
				 */
				MapP->Topology[0].Unit = Host;
				break;
			}
		}

		if (Host >= p->RIONumHosts) {
			rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum);
			MapP->HostUniqueNum = 0;
			/* MapP->RtaUniqueNum   = 0; */
			/* MapP->ID                     = 0; */
			/* MapP->Flags           = 0; */
			/* MapP->SysPort                 = 0; */
			/* MapP->Name[0]                 = 0; */
			continue;
		}

		rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
		if (MapP->RtaUniqueNum) {	/* (5) */
			if (!MapP->ID) {
				rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name);
				p->RIOError.Error = ZERO_RTA_ID;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			if (MapP->ID > MAX_RUP) {
				rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID);
				p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
				if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) {
					rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name);
					p->RIOError.Error = DUPLICATED_RTA_ID;
					p->RIOError.Entry = Entry;
					p->RIOError.Other = SubEnt;
					return -ENXIO;
				}
				/*
				 ** If the RtaUniqueNum is the same, it may be looking at both
				 ** entries for a 16 port RTA, so check the ids
				 */
				if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum)
				    && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
					rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name);
					rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name);
					p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
					p->RIOError.Entry = Entry;
					p->RIOError.Other = SubEnt;
					return -ENXIO;
				}
			}
			rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
			/* (7a) */
			if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
				rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n", (int) MapP->SysPort, MapP->Name, PORTS_PER_RTA);
				p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
			/* (7b) */
			if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
				rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name);
				p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
				if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT)
					continue;
				if (p->RIOConnectTable[SubEnt].RtaUniqueNum) {
					rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
					/* (8) */
					if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) {
						rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort);
						p->RIOError.Error = TTY_NUMBER_IN_USE;
						p->RIOError.Entry = Entry;
						p->RIOError.Other = SubEnt;
						return -ENXIO;
					}
					rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
					if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) {	/* (9) */
						rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
						p->RIOError.Error = NAME_USED_TWICE;
						p->RIOError.Entry = Entry;
						p->RIOError.Other = SubEnt;
						return -ENXIO;
					}
				}
			}
		} else {	/* (6) */
			rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
			if (MapP->ID) {
				rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name);
				p->RIOError.Error = HOST_ID_NOT_ZERO;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			if (MapP->SysPort != NO_PORT) {
				rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name);
				p->RIOError.Error = HOST_SYSPORT_BAD;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
		}
	}

	/*
	 ** wow! if we get here then it's a goody!
	 */

	/*
	 ** Zero the (old) entries for each host...
	 */
	for (Host = 0; Host < RIO_HOSTS; Host++) {
		for (Entry = 0; Entry < MAX_RUP; Entry++) {
			memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map));
		}
		memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name));
	}

	/*
	 ** Copy in the new table entries
	 */
	for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
		rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
		MapP = &p->RIOConnectTable[Entry];

		/*
		 ** Now, if it is an empty slot ignore it!
		 */
		if (MapP->HostUniqueNum == 0)
			continue;

		/*
		 ** we saved the host number earlier, so grab it back
		 */
		HostP = &p->RIOHosts[MapP->Topology[0].Unit];

		/*
		 ** If it is a host, then we only need to fill in the name field.
		 */
		if (MapP->ID == 0) {
			rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
			memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN);
			continue;
		}

		/*
		 ** Its an RTA entry, so fill in the host mapping entries for it
		 ** and the port mapping entries. Notice that entry zero is for
		 ** ID one.
		 */
		HostMapP = &HostP->Mapping[MapP->ID - 1];

		if (MapP->Flags & SLOT_IN_USE) {
			rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
			/*
			 ** structure assign, then sort out the bits we shouldn't have done
			 */
			*HostMapP = *MapP;

			HostMapP->Flags = SLOT_IN_USE;
			if (MapP->Flags & RTA16_SECOND_SLOT)
				HostMapP->Flags |= RTA16_SECOND_SLOT;

			RIOReMapPorts(p, HostP, HostMapP);
		} else {
			rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
		}
	}

	for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
		p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
	}

	for (Host = 0; Host < p->RIONumHosts; Host++) {
		for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
			p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
			p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
		}
		for (Entry = 0; Entry < MAX_RUP; Entry++) {
			for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
				p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
				p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK;
			}
		}
		if (!p->RIOHosts[Host].Name[0]) {
			memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
			p->RIOHosts[Host].Name[5] += Host;
		}
		/*
		 ** Check that default name assigned is unique.
		 */
		Host1 = Host;
		NameIsUnique = 0;
		while (!NameIsUnique) {
			NameIsUnique = 1;
			for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) {
				if (Host2 == Host)
					continue;
				if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
				    == 0) {
					NameIsUnique = 0;
					Host1++;
					if (Host1 >= p->RIONumHosts)
						Host1 = 0;
					p->RIOHosts[Host].Name[5] = '1' + Host1;
				}
			}
		}
		/*
		 ** Rename host if name already used.
		 */
		if (Host1 != Host) {
			rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
			memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
			p->RIOHosts[Host].Name[5] += Host1;
		}
		rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
	}
	return 0;
}

/*
** User process needs the config table - build it from first
** principles.
**
*	FIXME: SMP locking
*/
int RIOApel(struct rio_info *p)
{
	int Host;
	int link;
	int Rup;
	int Next = 0;
	struct Map *MapP;
	struct Host *HostP;
	unsigned long flags;

	rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");

	memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES);

	for (Host = 0; Host < RIO_HOSTS; Host++) {
		rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host);
		HostP = &p->RIOHosts[Host];
		rio_spin_lock_irqsave(&HostP->HostLock, flags);

		MapP = &p->RIOConnectTable[Next++];
		MapP->HostUniqueNum = HostP->UniqueNum;
		if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
			continue;
		MapP->RtaUniqueNum = 0;
		MapP->ID = 0;
		MapP->Flags = SLOT_IN_USE;
		MapP->SysPort = NO_PORT;
		for (link = 0; link < LINKS_PER_UNIT; link++)
			MapP->Topology[link] = HostP->Topology[link];
		memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN);
		for (Rup = 0; Rup < MAX_RUP; Rup++) {
			if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) {
				p->RIOConnectTable[Next] = HostP->Mapping[Rup];
				if (HostP->Mapping[Rup].Flags & SLOT_IN_USE)
					p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
				if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
					p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
				if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT)
					p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
				Next++;
			}
		}
		rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
	}
	return 0;
}

/*
** config.rio has taken a dislike to one of the gross maps entries.
** if the entry is suitably inactive, then we can gob on it and remove
** it from the table.
*/
int RIODeleteRta(struct rio_info *p, struct Map *MapP)
{
	int host, entry, port, link;
	int SysPort;
	struct Host *HostP;
	struct Map *HostMapP;
	struct Port *PortP;
	int work_done = 0;
	unsigned long lock_flags, sem_flags;

	rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum);

	for (host = 0; host < p->RIONumHosts; host++) {
		HostP = &p->RIOHosts[host];

		rio_spin_lock_irqsave(&HostP->HostLock, lock_flags);

		if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
			rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
			continue;
		}

		for (entry = 0; entry < MAX_RUP; entry++) {
			if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) {
				HostMapP = &HostP->Mapping[entry];
				rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name);

				/*
				 ** Check all four links of the unit are disconnected
				 */
				for (link = 0; link < LINKS_PER_UNIT; link++) {
					if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) {
						rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
						p->RIOError.Error = UNIT_IS_IN_USE;
						rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
						return -EBUSY;
					}
				}
				/*
				 ** Slot has been allocated, BUT not booted/routed/
				 ** connected/selected or anything else-ed
				 */
				SysPort = HostMapP->SysPort;

				if (SysPort != NO_PORT) {
					for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) {
						PortP = p->RIOPortp[port];
						rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n");

						rio_spin_lock_irqsave(&PortP->portSem, sem_flags);

						PortP->Mapped = 0;

						if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) {

							rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n");
							PortP->TxBufferIn = PortP->TxBufferOut = 0;
							/* What should I do 
							   wakeup( &PortP->TxBufferIn );
							   wakeup( &PortP->TxBufferOut);
							 */
							PortP->InUse = NOT_INUSE;
							/* What should I do 
							   wakeup( &PortP->InUse );
							   signal(PortP->TtyP->t_pgrp,SIGKILL);
							   ttyflush(PortP->TtyP,(FREAD|FWRITE));
							 */
							PortP->State |= RIO_CLOSING | RIO_DELETED;
						}

						/*
						 ** For the second slot of a 16 port RTA, the
						 ** driver needs to reset the changes made to
						 ** the phb to port mappings in RIORouteRup.
						 */
						if (PortP->SecondBlock) {
							u16 dest_unit = HostMapP->ID;
							u16 dest_port = port - SysPort;
							u16 __iomem *TxPktP;
							struct PKT __iomem *Pkt;

							for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) {
								/*
								 ** *TxPktP is the pointer to the
								 ** transmit packet on the host card.
								 ** This needs to be translated into
								 ** a 32 bit pointer so it can be
								 ** accessed from the driver.
								 */
								Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP));
								rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", readw(TxPktP), readb(&Pkt->dest_unit), readb(&Pkt->dest_port), dest_unit, dest_port);
								writew(dest_unit, &Pkt->dest_unit);
								writew(dest_port, &Pkt->dest_port);
							}
							rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, readb(&PortP->PhbP->destination) & 0xff, (readb(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port);
							writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination);
						}
						rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
					}
				}
				rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n");
				memset(HostMapP, 0, sizeof(struct Map));
				work_done++;
			}
		}
		rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
	}

	/* XXXXX lock me up */
	for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) {
		if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
			memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map));
			work_done++;
		}
		if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
			memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map));
			work_done++;
		}
	}
	if (work_done)
		return 0;

	rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
	p->RIOError.Error = COULDNT_FIND_ENTRY;
	return -ENXIO;
}

int RIOAssignRta(struct rio_info *p, struct Map *MapP)
{
	int host;
	struct Map *HostMapP;
	char *sptr;
	int link;


	rio_dprintk(RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort);

	if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) {
		rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
		p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
		return -EINVAL;
	}
	if (MapP->RtaUniqueNum == 0) {
		rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
		p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
		return -EINVAL;
	}
	if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
		rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA);
		p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
		return -EINVAL;
	}
	if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
		rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort);
		p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
		return -EINVAL;
	}

	/*
	 ** Copy the name across to the map entry.
	 */
	MapP->Name[MAX_NAME_LEN - 1] = '\0';
	sptr = MapP->Name;
	while (*sptr) {
		if (*sptr < ' ' || *sptr > '~') {
			rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
			p->RIOError.Error = BAD_CHARACTER_IN_NAME;
			return -EINVAL;
		}
		sptr++;
	}

	for (host = 0; host < p->RIONumHosts; host++) {
		if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
			if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
				p->RIOError.Error = HOST_NOT_RUNNING;
				return -ENXIO;
			}

			/*
			 ** Now we have a host we need to allocate an ID
			 ** if the entry does not already have one.
			 */
			if (MapP->ID == (u16) - 1) {
				int nNewID;

				rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name);
				/*
				 ** The idea here is to allow RTA's to be assigned
				 ** before they actually appear on the network.
				 ** This allows the addition of RTA's without having
				 ** to plug them in.
				 ** What we do is:
				 **  - Find a free ID and allocate it to the RTA.
				 **  - If this map entry is the second half of a
				 **    16 port entry then find the other half and
				 **    make sure the 2 cross reference each other.
				 */
				if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) {
					p->RIOError.Error = COULDNT_FIND_ENTRY;
					return -EBUSY;
				}
				MapP->ID = (u16) nNewID + 1;
				rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
				HostMapP = &p->RIOHosts[host].Mapping[nNewID];
				HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
				HostMapP->HostUniqueNum = MapP->HostUniqueNum;
				HostMapP->ID = MapP->ID;
				for (link = 0; link < LINKS_PER_UNIT; link++) {
					HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
					HostMapP->Topology[link].Link = NO_LINK;
				}
				if (MapP->Flags & RTA16_SECOND_SLOT) {
					int unit;

					for (unit = 0; unit < MAX_RUP; unit++)
						if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum)
							break;
					if (unit == MAX_RUP) {
						p->RIOError.Error = COULDNT_FIND_ENTRY;
						return -EBUSY;
					}
					HostMapP->Flags |= RTA16_SECOND_SLOT;
					HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
					p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
					rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID);
				}
			}

			HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];

			if (HostMapP->Flags & SLOT_IN_USE) {
				rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
				p->RIOError.Error = ID_ALREADY_IN_USE;
				return -EBUSY;
			}

			/*
			 ** Assign the sys ports and the name, and mark the slot as
			 ** being in use.
			 */
			HostMapP->SysPort = MapP->SysPort;
			if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
				memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
			HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
#ifdef NEED_TO_FIX
			RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]);
#endif
			if (MapP->Flags & RTA16_SECOND_SLOT)
				HostMapP->Flags |= RTA16_SECOND_SLOT;

			RIOReMapPorts(p, &p->RIOHosts[host], HostMapP);
			/*
			 ** Adjust 2nd block of 8 phbs
			 */
			if (MapP->Flags & RTA16_SECOND_SLOT)
				RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);

			if (HostMapP->SysPort != NO_PORT) {
				if (HostMapP->SysPort < p->RIOFirstPortsBooted)
					p->RIOFirstPortsBooted = HostMapP->SysPort;
				if (HostMapP->SysPort > p->RIOLastPortsBooted)
					p->RIOLastPortsBooted = HostMapP->SysPort;
			}
			if (MapP->Flags & RTA16_SECOND_SLOT)
				rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
			else
				rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
			return 0;
		}
	}
	p->RIOError.Error = UNKNOWN_HOST_NUMBER;
	rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
	return -ENXIO;
}


int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
{
	struct Port *PortP;
	unsigned int SubEnt;
	unsigned int HostPort;
	unsigned int SysPort;
	u16 RtaType;
	unsigned long flags;

	rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID);

	/*
	 ** We need to tell the UnixRups which sysport the rup corresponds to
	 */
	HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort;

	if (HostMapP->SysPort == NO_PORT)
		return (0);

	RtaType = GetUnitType(HostMapP->RtaUniqueNum);
	rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1);

	/*
	 ** now map each of its eight ports
	 */
	for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) {
		rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort);
		SysPort = HostMapP->SysPort + SubEnt;	/* portnumber within system */
		/* portnumber on host */

		HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt;

		rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
		PortP = p->RIOPortp[SysPort];
		rio_dprintk(RIO_DEBUG_TABLE, "Map port\n");

		/*
		 ** Point at all the real neat data structures
		 */
		rio_spin_lock_irqsave(&PortP->portSem, flags);
		PortP->HostP = HostP;
		PortP->Caddr = HostP->Caddr;

		/*
		 ** The PhbP cannot be filled in yet
		 ** unless the host has been booted
		 */
		if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
			struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
			PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add));
			PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start));
			PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end));
			PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove));
			PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start));
			PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end));
		} else
			PortP->PhbP = NULL;

		/*
		 ** port related flags
		 */
		PortP->HostPort = HostPort;
		/*
		 ** For each part of a 16 port RTA, RupNum is ID - 1.
		 */
		PortP->RupNum = HostMapP->ID - 1;
		if (HostMapP->Flags & RTA16_SECOND_SLOT) {
			PortP->ID2 = HostMapP->ID2 - 1;
			PortP->SecondBlock = 1;
		} else {
			PortP->ID2 = 0;
			PortP->SecondBlock = 0;
		}
		PortP->RtaUniqueNum = HostMapP->RtaUniqueNum;

		/*
		 ** If the port was already mapped then thats all we need to do.
		 */
		if (PortP->Mapped) {
			rio_spin_unlock_irqrestore(&PortP->portSem, flags);
			continue;
		} else
			HostMapP->Flags &= ~RTA_NEWBOOT;

		PortP->State = 0;
		PortP->Config = 0;
		/*
		 ** Check out the module type - if it is special (read only etc.)
		 ** then we need to set flags in the PortP->Config.
		 ** Note: For 16 port RTA, all ports are of the same type.
		 */
		if (RtaType == TYPE_RTA16) {
			PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
		} else {
			if (SubEnt < PORTS_PER_MODULE)
				PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
			else
				PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
		}

		/*
		 ** more port related flags
		 */
		PortP->PortState = 0;
		PortP->ModemLines = 0;
		PortP->ModemState = 0;
		PortP->CookMode = COOK_WELL;
		PortP->ParamSem = 0;
		PortP->FlushCmdBodge = 0;
		PortP->WflushFlag = 0;
		PortP->MagicFlags = 0;
		PortP->Lock = 0;
		PortP->Store = 0;
		PortP->FirstOpen = 1;

		/*
		 ** Buffers 'n things
		 */
		PortP->RxDataStart = 0;
		PortP->Cor2Copy = 0;
		PortP->Name = &HostMapP->Name[0];
		PortP->statsGather = 0;
		PortP->txchars = 0;
		PortP->rxchars = 0;
		PortP->opens = 0;
		PortP->closes = 0;
		PortP->ioctls = 0;
		if (PortP->TxRingBuffer)
			memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
		else if (p->RIOBufferSize) {
			PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL);
		}
		PortP->TxBufferOut = 0;
		PortP->TxBufferIn = 0;
		PortP->Debug = 0;
		/*
		 ** LastRxTgl stores the state of the rx toggle bit for this
		 ** port, to be compared with the state of the next pkt received.
		 ** If the same, we have received the same rx pkt from the RTA
		 ** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
		 */
		PortP->LastRxTgl = ~(u8) PHB_RX_TGL;

		/*
		 ** and mark the port as usable
		 */
		PortP->Mapped = 1;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
	}
	if (HostMapP->SysPort < p->RIOFirstPortsMapped)
		p->RIOFirstPortsMapped = HostMapP->SysPort;
	if (HostMapP->SysPort > p->RIOLastPortsMapped)
		p->RIOLastPortsMapped = HostMapP->SysPort;

	return 0;
}

int RIOChangeName(struct rio_info *p, struct Map *MapP)
{
	int host;
	struct Map *HostMapP;
	char *sptr;

	rio_dprintk(RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort);

	if (MapP->ID > MAX_RUP) {
		rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
		p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
		return -EINVAL;
	}

	MapP->Name[MAX_NAME_LEN - 1] = '\0';
	sptr = MapP->Name;

	while (*sptr) {
		if (*sptr < ' ' || *sptr > '~') {
			rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
			p->RIOError.Error = BAD_CHARACTER_IN_NAME;
			return -EINVAL;
		}
		sptr++;
	}

	for (host = 0; host < p->RIONumHosts; host++) {
		if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
			if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
				p->RIOError.Error = HOST_NOT_RUNNING;
				return -ENXIO;
			}
			if (MapP->ID == 0) {
				memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN);
				return 0;
			}

			HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];

			if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) {
				p->RIOError.Error = RTA_NUMBER_WRONG;
				return -ENXIO;
			}
			memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
			return 0;
		}
	}
	p->RIOError.Error = UNKNOWN_HOST_NUMBER;
	rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
	return -ENXIO;
}