drivers/char/rio/riotable.c

   1 /*
   2 ** -----------------------------------------------------------------------------
   3 **
   4 **  Perle Specialix driver for Linux
   5 **  Ported from existing RIO Driver for SCO sources.
   6  *
   7  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  *
  14  *      This program is distributed in the hope that it will be useful,
  15  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *      GNU General Public License for more details.
  18  *
  19  *      You should have received a copy of the GNU General Public License
  20  *      along with this program; if not, write to the Free Software
  21  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 **
  23 **      Module          : riotable.c
  24 **      SID             : 1.2
  25 **      Last Modified   : 11/6/98 10:33:47
  26 **      Retrieved       : 11/6/98 10:33:50
  27 **
  28 **  ident @(#)riotable.c        1.2
  29 **
  30 ** -----------------------------------------------------------------------------
  31 */
  32 #ifdef SCCS_LABELS
  33 static char *_riotable_c_sccs_ = "@(#)riotable.c        1.2";
  34 #endif
  35
  36 #include <linux/module.h>
  37 #include <linux/slab.h>
  38 #include <linux/errno.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/string.h>
  41
  42 #include <asm/io.h>
  43 #include <asm/system.h>
  44 #include <asm/string.h>
  45 #include <asm/semaphore.h>
  46 #include <asm/uaccess.h>
  47
  48 #include <linux/termios.h>
  49 #include <linux/serial.h>
  50
  51 #include <linux/generic_serial.h>
  52
  53
  54 #include "linux_compat.h"
  55 #include "rio_linux.h"
  56 #include "typdef.h"
  57 #include "pkt.h"
  58 #include "daemon.h"
  59 #include "rio.h"
  60 #include "riospace.h"
  61 #include "top.h"
  62 #include "cmdpkt.h"
  63 #include "map.h"
  64 #include "riotypes.h"
  65 #include "rup.h"
  66 #include "port.h"
  67 #include "riodrvr.h"
  68 #include "rioinfo.h"
  69 #include "func.h"
  70 #include "errors.h"
  71 #include "pci.h"
  72
  73 #include "parmmap.h"
  74 #include "unixrup.h"
  75 #include "board.h"
  76 #include "host.h"
  77 #include "error.h"
  78 #include "phb.h"
  79 #include "link.h"
  80 #include "cmdblk.h"
  81 #include "route.h"
  82 #include "control.h"
  83 #include "cirrus.h"
  84 #include "rioioctl.h"
  85 #include "param.h"
  86 #include "list.h"
  87 #include "sam.h"
  88 #include "protsts.h"
  89
  90 /*
  91 ** A configuration table has been loaded. It is now up to us
  92 ** to sort it out and use the information contained therein.
  93 */
  94 int
  95 RIONewTable(p)
  96 struct rio_info *       p;
  97 {
  98         int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
  99         struct Map *MapP;
 100         struct Map *HostMapP;
 101         struct Host *HostP;
 102
 103         char *cptr;
 104
 105         /*
 106         ** We have been sent a new table to install. We need to break
 107         ** it down into little bits and spread it around a bit to see
 108         ** what we have got.
 109         */
 110         /*
 111         ** Things to check:
 112         ** (things marked 'xx' aren't checked any more!)
 113         ** (1)  That there are no booted Hosts/RTAs out there.
 114         ** (2)  That the names are properly formed
 115         ** (3)  That blank entries really are.
 116         ** xx (4)       That hosts mentioned in the table actually exist. xx
 117         ** (5)  That the IDs are unique (per host).
 118         ** (6)  That host IDs are zero
 119         ** (7)  That port numbers are valid
 120         ** (8)  That port numbers aren't duplicated
 121         ** (9)  That names aren't duplicated
 122         ** xx (10) That hosts that actually exist are mentioned in the table. xx
 123         */
 124         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
 125         if ( p->RIOSystemUp ) {         /* (1) */
 126                 p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
 127                 return -EBUSY;
 128         }
 129
 130         p->RIOError.Error = NOTHING_WRONG_AT_ALL;
 131         p->RIOError.Entry = -1;
 132         p->RIOError.Other = -1;
 133
 134         for ( Entry=0; Entry<TOTAL_MAP_ENTRIES; Entry++ ) {
 135                 MapP = &p->RIOConnectTable[Entry];
 136                 if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
 137                         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
 138                         cptr = MapP->Name;              /* (2) */
 139                         cptr[MAX_NAME_LEN-1]='\0';
 140                         if ( cptr[0]=='\0' ) {
 141                                 bcopy(MapP->RtaUniqueNum?"RTA   NN":"HOST NN",MapP->Name,8);
 142                                 MapP->Name[5] = '0'+Entry/10;
 143                                 MapP->Name[6] = '0'+Entry%10;
 144                         }
 145                         while ( *cptr ) {
 146                                 if ( *cptr<' ' || *cptr>'~' ) {
 147                                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 148                                         p->RIOError.Entry = Entry;
 149                                         return -ENXIO;
 150                                 }
 151                                 cptr++;
 152                         }
 153                 }
 154
 155                 /*
 156                 ** If the entry saved was a tentative entry then just forget
 157                 ** about it.
 158                 */
 159                 if ( MapP->Flags & SLOT_TENTATIVE ) {
 160                         MapP->HostUniqueNum = 0;
 161                         MapP->RtaUniqueNum = 0;
 162                         continue;
 163                 }
 164
 165                 rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
 166                 if ( !MapP->RtaUniqueNum && !MapP->HostUniqueNum ) { /* (3) */
 167                         if ( MapP->ID || MapP->SysPort || MapP->Flags ) {
 168                                 rio_dprintk (RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n",MapP->Name);
 169                                 p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
 170                                 p->RIOError.Entry = Entry;
 171                                 return -ENXIO;
 172                         }
 173                         rio_dprintk (RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
 174                         continue;
 175                 }
 176
 177                 rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
 178                 for ( Host=0; Host<p->RIONumHosts; Host++ ) { /* (4) */
 179                         if ( p->RIOHosts[Host].UniqueNum==MapP->HostUniqueNum ) {
 180                                 HostP = &p->RIOHosts[Host];
 181                                 /*
 182                                 ** having done the lookup, we don't really want to do
 183                                 ** it again, so hang the host number in a safe place
 184                                 */
 185                                 MapP->Topology[0].Unit = Host;
 186                                 break;
 187                         }
 188                 }
 189
 190                 if ( Host >= p->RIONumHosts ) {
 191                         rio_dprintk (RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n",
 192                                                                         MapP->Name, MapP->HostUniqueNum);
 193                         MapP->HostUniqueNum = 0;
 194                         /* MapP->RtaUniqueNum   = 0; */
 195                         /* MapP->ID                     = 0; */
 196                         /* MapP->Flags           = 0; */
 197                         /* MapP->SysPort                 = 0; */
 198                         /* MapP->Name[0]                 = 0; */
 199                         continue;
 200                 }
 201
 202                 rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
 203                 if ( MapP->RtaUniqueNum ) { /* (5) */
 204                         if ( !MapP->ID ) {
 205                                 rio_dprintk (RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n",
 206                                                         MapP->Name);
 207                                 p->RIOError.Error                = ZERO_RTA_ID;
 208                                 p->RIOError.Entry = Entry;
 209                                 return -ENXIO;
 210                         }
 211                         if ( MapP->ID > MAX_RUP ) {
 212                                 rio_dprintk (RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n",
 213                                                         MapP->Name, MapP->ID);
 214                                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 215                                 p->RIOError.Entry = Entry;
 216                                 return -ENXIO;
 217                         }
 218                         for ( SubEnt=0; SubEnt<Entry; SubEnt++ ) {
 219                                 if ( MapP->HostUniqueNum ==
 220                                                 p->RIOConnectTable[SubEnt].HostUniqueNum &&
 221                                                 MapP->ID == p->RIOConnectTable[SubEnt].ID ) {
 222                                         rio_dprintk (RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n",
 223                                                         MapP->Name, p->RIOConnectTable[SubEnt].Name);
 224                                         p->RIOError.Error = DUPLICATED_RTA_ID;
 225                                         p->RIOError.Entry = Entry;
 226                                         p->RIOError.Other = SubEnt;
 227                                         return -ENXIO;
 228                                 }
 229                                 /*
 230                                 ** If the RtaUniqueNum is the same, it may be looking at both
 231                                 ** entries for a 16 port RTA, so check the ids
 232                                 */
 233                                 if ((MapP->RtaUniqueNum ==
 234                                                 p->RIOConnectTable[SubEnt].RtaUniqueNum)
 235                                                 && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
 236                                         rio_dprintk (RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n",MapP->Name);
 237                                         rio_dprintk (RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n",
 238                                                                                 p->RIOConnectTable[SubEnt].Name);
 239                                         p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
 240                                         p->RIOError.Entry = Entry;
 241                                         p->RIOError.Other = SubEnt;
 242                                         return -ENXIO;
 243                                 }
 244                         }
 245                         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
 246                         /* (7a) */
 247                         if ((MapP->SysPort != NO_PORT)&&(MapP->SysPort % PORTS_PER_RTA)) {
 248                                 rio_dprintk (RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n",
 249                                         (int)MapP->SysPort,MapP->Name, PORTS_PER_RTA);
 250                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 251                                 p->RIOError.Entry = Entry;
 252                                 return -ENXIO;
 253                         }
 254                         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
 255                         /* (7b) */
 256                         if ((MapP->SysPort != NO_PORT)&&(MapP->SysPort >= RIO_PORTS)) {
 257                                 rio_dprintk (RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n",
 258                                                         (int)MapP->SysPort, MapP->Name);
 259                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 260                                 p->RIOError.Entry = Entry;
 261                                 return -ENXIO;
 262                         }
 263                         for ( SubEnt=0; SubEnt<Entry; SubEnt++ ) {
 264                                 if ( p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT )
 265                                                 continue;
 266                                 if ( p->RIOConnectTable[SubEnt].RtaUniqueNum ) {
 267                                         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
 268                                         /* (8) */
 269                                         if ( (MapP->SysPort != NO_PORT) && (MapP->SysPort ==
 270                                                                         p->RIOConnectTable[SubEnt].SysPort) ) {
 271                                                 rio_dprintk (RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n",
 272                                                         MapP->Name, p->RIOConnectTable[SubEnt].Name,
 273                                                         (int)MapP->SysPort);
 274                                                 p->RIOError.Error = TTY_NUMBER_IN_USE;
 275                                                 p->RIOError.Entry = Entry;
 276                                                 p->RIOError.Other = SubEnt;
 277                                                 return -ENXIO;
 278                                         }
 279                                         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
 280                                         if (strcmp(MapP->Name,
 281                                                         p->RIOConnectTable[SubEnt].Name)==0 && !(MapP->Flags & RTA16_SECOND_SLOT)) { /* (9) */
 282                                                 rio_dprintk (RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
 283                                                 p->RIOError.Error = NAME_USED_TWICE;
 284                                                 p->RIOError.Entry = Entry;
 285                                                 p->RIOError.Other = SubEnt;
 286                                                 return -ENXIO;
 287                                         }
 288                                 }
 289                         }
 290                 }
 291                 else { /* (6) */
 292                         rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
 293                         if ( MapP->ID ) {
 294                                 rio_dprintk (RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n",
 295                                         MapP->Name);
 296                                 p->RIOError.Error = HOST_ID_NOT_ZERO;
 297                                 p->RIOError.Entry = Entry;
 298                                 return -ENXIO;
 299                         }
 300                         if ( MapP->SysPort != NO_PORT ) {
 301                                 rio_dprintk (RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n",
 302                                         MapP->Name);
 303                                 p->RIOError.Error = HOST_SYSPORT_BAD;
 304                                 p->RIOError.Entry = Entry;
 305                                 return -ENXIO;
 306                         }
 307                 }
 308         }
 309
 310         /*
 311         ** wow! if we get here then it's a goody!
 312         */
 313
 314         /*
 315         ** Zero the (old) entries for each host...
 316         */
 317         for ( Host=0; Host<RIO_HOSTS; Host++ ) {
 318                 for ( Entry=0; Entry<MAX_RUP; Entry++ ) {
 319                         bzero((caddr_t)&p->RIOHosts[Host].Mapping[Entry],
 320                                                                                         sizeof(struct Map));
 321                 }
 322                 bzero((caddr_t)&p->RIOHosts[Host].Name[0],
 323                                                                 sizeof(p->RIOHosts[Host].Name) );
 324         }
 325
 326         /*
 327         ** Copy in the new table entries
 328         */
 329         for ( Entry=0; Entry< TOTAL_MAP_ENTRIES; Entry++ ) {
 330                 rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
 331                 MapP = &p->RIOConnectTable[Entry];
 332
 333                 /*
 334                 ** Now, if it is an empty slot ignore it!
 335                 */
 336                 if ( MapP->HostUniqueNum==0 )
 337                         continue;
 338
 339                 /*
 340                 ** we saved the host number earlier, so grab it back
 341                 */
 342                 HostP = &p->RIOHosts[MapP->Topology[0].Unit];
 343
 344                 /*
 345                 ** If it is a host, then we only need to fill in the name field.
 346                 */
 347                 if ( MapP->ID==0 ) {
 348                         rio_dprintk (RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
 349                         bcopy(MapP->Name,HostP->Name,MAX_NAME_LEN);
 350                         continue;
 351                 }
 352
 353                 /*
 354                 ** Its an RTA entry, so fill in the host mapping entries for it
 355                 ** and the port mapping entries. Notice that entry zero is for
 356                 ** ID one.
 357                 */
 358                 HostMapP = &HostP->Mapping[MapP->ID-1];
 359
 360                 if (MapP->Flags & SLOT_IN_USE) {
 361                         rio_dprintk (RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
 362                         /*
 363                         ** structure assign, then sort out the bits we shouldn't have done
 364                         */
 365                         *HostMapP = *MapP;
 366
 367                         HostMapP->Flags = SLOT_IN_USE;
 368                         if (MapP->Flags & RTA16_SECOND_SLOT)
 369                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 370
 371                         RIOReMapPorts(p, HostP, HostMapP );
 372                 }
 373                 else {
 374                         rio_dprintk (RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
 375                 }
 376         }
 377
 378         for ( Entry=0; Entry< TOTAL_MAP_ENTRIES; Entry++ ) {
 379                 p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
 380         }
 381
 382         for ( Host=0; Host<p->RIONumHosts; Host++ ) {
 383                 for ( SubEnt=0; SubEnt<LINKS_PER_UNIT; SubEnt++ ) {
 384                         p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 385                         p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
 386                 }
 387                 for ( Entry=0; Entry<MAX_RUP; Entry++ ) {
 388                         for ( SubEnt=0; SubEnt<LINKS_PER_UNIT; SubEnt++ ) {
 389                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit =
 390                                                                 ROUTE_DISCONNECT;
 391                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link =
 392                                                                 NO_LINK;
 393                         }
 394                 }
 395                 if ( !p->RIOHosts[Host].Name[0] ) {
 396                         bcopy("HOST 1",p->RIOHosts[Host].Name,7);
 397                         p->RIOHosts[Host].Name[5] += Host;
 398                 }
 399                 /*
 400                 ** Check that default name assigned is unique.
 401                 */
 402                 Host1 = Host;
 403                 NameIsUnique = 0;
 404                 while (!NameIsUnique) {
 405                         NameIsUnique = 1;
 406                         for ( Host2=0; Host2<p->RIONumHosts; Host2++ ) {
 407                                 if (Host2 == Host)
 408                                         continue;
 409                                 if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
 410                                                                          == 0) {
 411                                         NameIsUnique = 0;
 412                                         Host1++;
 413                                         if (Host1 >= p->RIONumHosts)
 414                                                 Host1 = 0;
 415                                         p->RIOHosts[Host].Name[5] = '1' + Host1;
 416                                 }
 417                         }
 418                 }
 419                 /*
 420                 ** Rename host if name already used.
 421                 */
 422                 if (Host1 != Host)
 423                 {
 424                         rio_dprintk (RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
 425                         bcopy("HOST 1",p->RIOHosts[Host].Name,7);
 426                         p->RIOHosts[Host].Name[5] += Host1;
 427                 }
 428                 rio_dprintk (RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
 429         }
 430         return 0;
 431 }
 432
 433 /*
 434 ** User process needs the config table - build it from first
 435 ** principles.
 436 */
 437 int
 438 RIOApel(p)
 439 struct rio_info *       p;
 440 {
 441         int Host;
 442         int link;
 443         int Rup;
 444         int Next = 0;
 445         struct Map *MapP;
 446         struct Host *HostP;
 447         long oldspl;
 448
 449         disable(oldspl);                /* strange but true! */
 450
 451         rio_dprintk (RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");
 452
 453         bzero((caddr_t)&p->RIOConnectTable[0],
 454                                         sizeof(struct Map) * TOTAL_MAP_ENTRIES );
 455
 456         for ( Host=0; Host<RIO_HOSTS; Host++ ) {
 457                 rio_dprintk (RIO_DEBUG_TABLE, "Processing host %d\n", Host);
 458                 HostP = &p->RIOHosts[Host];
 459                 MapP = &p->RIOConnectTable[Next++];
 460                 MapP->HostUniqueNum = HostP->UniqueNum;
 461                 if ( (HostP->Flags & RUN_STATE) != RC_RUNNING )
 462                         continue;
 463                 MapP->RtaUniqueNum = 0;
 464                 MapP->ID = 0;
 465                 MapP->Flags = SLOT_IN_USE;
 466                 MapP->SysPort = NO_PORT;
 467                 for ( link=0; link<LINKS_PER_UNIT; link++ )
 468                         MapP->Topology[link] = HostP->Topology[link];
 469                 bcopy(HostP->Name,MapP->Name,MAX_NAME_LEN);
 470                 for ( Rup=0; Rup<MAX_RUP; Rup++ ) {
 471                         if ( HostP->Mapping[Rup].Flags & (SLOT_IN_USE|SLOT_TENTATIVE) ) {
 472                                 p->RIOConnectTable[Next] = HostP->Mapping[Rup];
 473                                 if ( HostP->Mapping[Rup].Flags & SLOT_IN_USE)
 474                                         p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
 475                                 if ( HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
 476                                         p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
 477                                 if ( HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT )
 478                                         p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
 479                                 Next++;
 480                         }
 481                 }
 482         }
 483         restore(oldspl);
 484         return 0;
 485 }
 486
 487 /*
 488 ** config.rio has taken a dislike to one of the gross maps entries.
 489 ** if the entry is suitably inactive, then we can gob on it and remove
 490 ** it from the table.
 491 */
 492 int
 493 RIODeleteRta(p, MapP)
 494 struct rio_info *p;
 495 struct Map *MapP;
 496 {
 497         int host, entry, port, link;
 498         int SysPort;
 499         struct Host *HostP;
 500         struct Map *HostMapP;
 501         struct Port *PortP;
 502         int work_done = 0;
 503         unsigned long lock_flags, sem_flags;
 504
 505         rio_dprintk (RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n",
 506                                                                 MapP->HostUniqueNum, MapP->RtaUniqueNum);
 507
 508         for ( host=0; host < p->RIONumHosts; host++ ) {
 509                 HostP = &p->RIOHosts[host];
 510
 511                 rio_spin_lock_irqsave( &HostP->HostLock, lock_flags );
 512
 513                 if ( (HostP->Flags & RUN_STATE) != RC_RUNNING ) {
 514                         rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 515                         continue;
 516                 }
 517
 518                 for ( entry=0; entry<MAX_RUP; entry++ ) {
 519                         if ( MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum ) {
 520                                 HostMapP = &HostP->Mapping[entry];
 521                                 rio_dprintk (RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n",
 522                                                 entry, HostP->Name);
 523
 524                                 /*
 525                                 ** Check all four links of the unit are disconnected
 526                                 */
 527                                 for ( link=0; link< LINKS_PER_UNIT; link++ ) {
 528                                         if ( HostMapP->Topology[link].Unit != ROUTE_DISCONNECT ) {
 529                                                 rio_dprintk (RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
 530                                                 p->RIOError.Error = UNIT_IS_IN_USE;
 531                                                 rio_spin_unlock_irqrestore( &HostP->HostLock, lock_flags);
 532                                                 return -EBUSY;
 533                                         }
 534                                 }
 535                                 /*
 536                                 ** Slot has been allocated, BUT not booted/routed/
 537                                 ** connected/selected or anything else-ed
 538                                 */
 539                                 SysPort = HostMapP->SysPort;
 540
 541                                 if ( SysPort != NO_PORT ) {
 542                                         for (port=SysPort; port < SysPort+PORTS_PER_RTA; port++) {
 543                                                 PortP = p->RIOPortp[port];
 544                                                 rio_dprintk (RIO_DEBUG_TABLE, "Unmap port\n");
 545
 546                                                 rio_spin_lock_irqsave( &PortP->portSem, sem_flags );
 547
 548                                                 PortP->Mapped = 0;
 549
 550                                                 if ( PortP->State & (RIO_MOPEN|RIO_LOPEN) ) {
 551
 552                                                         rio_dprintk (RIO_DEBUG_TABLE, "Gob on port\n");
 553                                                         PortP->TxBufferIn = PortP->TxBufferOut = 0;
 554                                                         /* What should I do
 555                                                         wakeup( &PortP->TxBufferIn );
 556                                                         wakeup( &PortP->TxBufferOut);
 557                                                         */
 558                                                         PortP->InUse = NOT_INUSE;
 559                                                         /* What should I do
 560                                                         wakeup( &PortP->InUse );
 561                                                         signal(PortP->TtyP->t_pgrp,SIGKILL);
 562                                                         ttyflush(PortP->TtyP,(FREAD|FWRITE));
 563                                                         */
 564                                                         PortP->State |= RIO_CLOSING | RIO_DELETED;
 565                                                 }
 566
 567                                                 /*
 568                                                 ** For the second slot of a 16 port RTA, the
 569                                                 ** driver needs to reset the changes made to
 570                                                 ** the phb to port mappings in RIORouteRup.
 571                                                 */
 572                                                 if (PortP->SecondBlock) {
 573                                                         ushort dest_unit = HostMapP->ID;
 574                                                         ushort dest_port = port - SysPort;
 575                                                         WORD     *TxPktP;
 576                                                         PKT     *Pkt;
 577
 578                                                         for (TxPktP = PortP->TxStart;
 579                                                                 TxPktP <= PortP->TxEnd; TxPktP++) {
 580                                                                 /*
 581                                                                 ** *TxPktP is the pointer to the
 582                                                                 ** transmit packet on the host card.
 583                                                                 ** This needs to be translated into
 584                                                                 ** a 32 bit pointer so it can be
 585                                                                 ** accessed from the driver.
 586                                                                 */
 587                                                                 Pkt = (PKT *) RIO_PTR(HostP->Caddr,
 588                                                                         RWORD(*TxPktP));
 589                                                                 rio_dprintk (RIO_DEBUG_TABLE,
 590                                                 "Tx packet (%x) destination: Old %x:%x New %x:%x\n",
 591                                                                  *TxPktP, Pkt->dest_unit,
 592                                                                  Pkt->dest_port, dest_unit, dest_port);
 593                                                                 WWORD(Pkt->dest_unit, dest_unit);
 594                                                                 WWORD(Pkt->dest_port, dest_port);
 595                                                         }
 596                                                         rio_dprintk (RIO_DEBUG_TABLE,
 597                                                 "Port %d phb destination: Old %x:%x New %x:%x\n",
 598                                                          port, PortP->PhbP->destination & 0xff,
 599                                                          (PortP->PhbP->destination >> 8) & 0xff,
 600                                                          dest_unit, dest_port);
 601                                                         WWORD(PortP->PhbP->destination,
 602                                                          dest_unit + (dest_port << 8));
 603                                                 }
 604                                                 rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
 605                                         }
 606                                 }
 607                                 rio_dprintk (RIO_DEBUG_TABLE, "Entry nulled.\n");
 608                                 bzero((char *)HostMapP,sizeof(struct Map));
 609                                 work_done++;
 610                         }
 611                 }
 612                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 613         }
 614
 615         /* XXXXX lock me up */
 616         for ( entry=0; entry< TOTAL_MAP_ENTRIES; entry++ ) {
 617                 if ( p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum ) {
 618                         bzero((char *)&p->RIOSavedTable[entry],sizeof(struct Map));
 619                         work_done++;
 620                 }
 621                 if ( p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum ) {
 622                         bzero((char *)&p->RIOConnectTable[entry],sizeof(struct Map));
 623                         work_done++;
 624                 }
 625         }
 626         if ( work_done )
 627                 return 0;
 628
 629         rio_dprintk (RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
 630         p->RIOError.Error = COULDNT_FIND_ENTRY;
 631         return -ENXIO;
 632 }
 633
 634 int RIOAssignRta( struct rio_info *p, struct Map *MapP )
 635 {
 636     int host;
 637     struct Map *HostMapP;
 638     char *sptr;
 639     int link;
 640
 641
 642     rio_dprintk (RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n",
 643                                 MapP->HostUniqueNum,MapP->RtaUniqueNum,
 644                                 MapP->ID, (int)MapP->SysPort);
 645
 646     if ((MapP->ID != (ushort)-1) &&
 647         ((int)MapP->ID < (int)1 || (int)MapP->ID > MAX_RUP ))
 648     {
 649         rio_dprintk (RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 650         p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 651         return -EINVAL;
 652     }
 653     if (MapP->RtaUniqueNum == 0)
 654     {
 655         rio_dprintk (RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
 656         p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
 657         return -EINVAL;
 658     }
 659     if ( (MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA) )
 660     {
 661         rio_dprintk (RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n",(int)MapP->SysPort,PORTS_PER_RTA);
 662         p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 663         return -EINVAL;
 664     }
 665     if ( (MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS) )
 666     {
 667         rio_dprintk (RIO_DEBUG_TABLE, "Port %d not valid!\n",(int)MapP->SysPort);
 668         p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 669         return -EINVAL;
 670     }
 671
 672     /*
 673     ** Copy the name across to the map entry.
 674     */
 675     MapP->Name[MAX_NAME_LEN-1] = '\0';
 676     sptr = MapP->Name;
 677     while ( *sptr )
 678     {
 679     if ( *sptr<' ' || *sptr>'~' )
 680     {
 681         rio_dprintk (RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 682         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 683         return -EINVAL;
 684     }
 685     sptr++;
 686     }
 687
 688     for ( host=0; host < p->RIONumHosts; host++ )
 689     {
 690         if ( MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum )
 691         {
 692             if ( (p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING )
 693             {
 694                 p->RIOError.Error = HOST_NOT_RUNNING;
 695                 return -ENXIO;
 696             }
 697
 698             /*
 699             ** Now we have a host we need to allocate an ID
 700             ** if the entry does not already have one.
 701             */
 702             if (MapP->ID == (ushort)-1)
 703             {
 704                 int nNewID;
 705
 706                 rio_dprintk (RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n",
 707                       MapP->Name);
 708                 /*
 709                 ** The idea here is to allow RTA's to be assigned
 710                 ** before they actually appear on the network.
 711                 ** This allows the addition of RTA's without having
 712                 ** to plug them in.
 713                 ** What we do is:
 714                 **  - Find a free ID and allocate it to the RTA.
 715                 **  - If this map entry is the second half of a
 716                 **    16 port entry then find the other half and
 717                 **    make sure the 2 cross reference each other.
 718                 */
 719                 if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0)
 720                 {
 721                     p->RIOError.Error = COULDNT_FIND_ENTRY;
 722                     return -EBUSY;
 723                 }
 724                 MapP->ID = (ushort)nNewID + 1;
 725                 rio_dprintk (RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
 726                 HostMapP = &p->RIOHosts[host].Mapping[nNewID];
 727                 HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
 728                 HostMapP->HostUniqueNum = MapP->HostUniqueNum;
 729                 HostMapP->ID = MapP->ID;
 730                 for (link = 0; link < LINKS_PER_UNIT; link++)
 731                 {
 732                     HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
 733                     HostMapP->Topology[link].Link = NO_LINK;
 734                 }
 735                 if (MapP->Flags & RTA16_SECOND_SLOT)
 736                 {
 737                     int unit;
 738
 739                     for (unit = 0; unit < MAX_RUP; unit++)
 740                         if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum ==
 741                             MapP->RtaUniqueNum)
 742                             break;
 743                     if (unit == MAX_RUP)
 744                     {
 745                         p->RIOError.Error = COULDNT_FIND_ENTRY;
 746                         return -EBUSY;
 747                     }
 748                     HostMapP->Flags |= RTA16_SECOND_SLOT;
 749                     HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
 750                     p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
 751                     rio_dprintk (RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n",
 752                           MapP->ID,
 753                           p->RIOHosts[host].Mapping[unit].ID);
 754                 }
 755             }
 756
 757             HostMapP = &p->RIOHosts[host].Mapping[MapP->ID-1];
 758
 759             if ( HostMapP->Flags & SLOT_IN_USE )
 760             {
 761                 rio_dprintk (RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
 762                 p->RIOError.Error = ID_ALREADY_IN_USE;
 763                 return -EBUSY;
 764             }
 765
 766             /*
 767             ** Assign the sys ports and the name, and mark the slot as
 768             ** being in use.
 769             */
 770             HostMapP->SysPort = MapP->SysPort;
 771             if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
 772               CCOPY( MapP->Name, HostMapP->Name, MAX_NAME_LEN );
 773             HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
 774 #ifdef NEED_TO_FIX
 775             RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID-1]);
 776 #endif
 777             if (MapP->Flags & RTA16_SECOND_SLOT)
 778                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 779
 780             RIOReMapPorts( p, &p->RIOHosts[host], HostMapP );
 781             /*
 782             ** Adjust 2nd block of 8 phbs
 783             */
 784             if (MapP->Flags & RTA16_SECOND_SLOT)
 785                 RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);
 786
 787             if ( HostMapP->SysPort != NO_PORT )
 788             {
 789                 if ( HostMapP->SysPort < p->RIOFirstPortsBooted )
 790                     p->RIOFirstPortsBooted = HostMapP->SysPort;
 791                 if ( HostMapP->SysPort > p->RIOLastPortsBooted )
 792                     p->RIOLastPortsBooted = HostMapP->SysPort;
 793             }
 794             if (MapP->Flags & RTA16_SECOND_SLOT)
 795                 rio_dprintk (RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n",
 796                  p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
 797             else
 798                 rio_dprintk (RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
 799             return 0;
 800         }
 801     }
 802     p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 803     rio_dprintk (RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 804     return -ENXIO;
 805 }
 806
 807
 808 int
 809 RIOReMapPorts(p, HostP, HostMapP)
 810 struct rio_info *       p;
 811 struct Host *HostP;
 812 struct Map *HostMapP;
 813 {
 814         register struct Port *PortP;
 815         uint SubEnt;
 816         uint HostPort;
 817         uint SysPort;
 818         ushort RtaType;
 819         unsigned long flags;
 820
 821 #ifdef CHECK
 822         CheckHostP( HostP );
 823         CheckHostMapP( HostMapP );
 824 #endif
 825
 826         rio_dprintk (RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int)HostMapP->SysPort, HostMapP->ID);
 827
 828         /*
 829         ** We need to tell the UnixRups which sysport the rup corresponds to
 830         */
 831         HostP->UnixRups[HostMapP->ID-1].BaseSysPort = HostMapP->SysPort;
 832
 833         if ( HostMapP->SysPort == NO_PORT )
 834                 return(0);
 835
 836         RtaType = GetUnitType(HostMapP->RtaUniqueNum);
 837         rio_dprintk (RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n",
 838                                 (int)HostMapP->SysPort, (int)HostMapP->SysPort+PORTS_PER_RTA-1);
 839
 840         /*
 841         ** now map each of its eight ports
 842         */
 843         for ( SubEnt=0; SubEnt<PORTS_PER_RTA; SubEnt++) {
 844           rio_dprintk (RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n",
 845                   SubEnt, (int)HostMapP->SysPort);
 846                 SysPort = HostMapP->SysPort+SubEnt;             /* portnumber within system */
 847                                         /* portnumber on host */
 848
 849                 HostPort = (HostMapP->ID-1)*PORTS_PER_RTA+SubEnt;
 850
 851                 rio_dprintk (RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
 852                 PortP = p->RIOPortp[SysPort];
 853 #if 0
 854                 PortP->TtyP     = &p->channel[SysPort];
 855 #endif
 856                 rio_dprintk (RIO_DEBUG_TABLE, "Map port\n");
 857
 858                 /*
 859                 ** Point at all the real neat data structures
 860                 */
 861                 rio_spin_lock_irqsave(&PortP->portSem, flags);
 862                 PortP->HostP = HostP;
 863                 PortP->Caddr = HostP->Caddr;
 864
 865                 /*
 866                 ** The PhbP cannot be filled in yet
 867                 ** unless the host has been booted
 868                 */
 869                 if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
 870                         struct PHB *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
 871                         PortP->TxAdd =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->tx_add));
 872                         PortP->TxStart =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->tx_start));
 873                         PortP->TxEnd =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->tx_end));
 874                         PortP->RxRemove=(WORD *)RIO_PTR(HostP->Caddr,
 875                                                                         RWORD(PhbP->rx_remove));
 876                         PortP->RxStart =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->rx_start));
 877                         PortP->RxEnd =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->rx_end));
 878                 }
 879                 else
 880                         PortP->PhbP = NULL;
 881
 882                 /*
 883                 ** port related flags
 884                 */
 885                 PortP->HostPort = HostPort;
 886                 /*
 887                 ** For each part of a 16 port RTA, RupNum is ID - 1.
 888                 */
 889                 PortP->RupNum = HostMapP->ID - 1;
 890                 if (HostMapP->Flags & RTA16_SECOND_SLOT) {
 891                         PortP->ID2                       = HostMapP->ID2 - 1;
 892                         PortP->SecondBlock       = TRUE;
 893                 }
 894                 else {
 895                         PortP->ID2                       = 0;
 896                         PortP->SecondBlock       = FALSE;
 897                 }
 898                 PortP->RtaUniqueNum     = HostMapP->RtaUniqueNum;
 899
 900                 /*
 901                 ** If the port was already mapped then thats all we need to do.
 902                 */
 903                 if (PortP->Mapped) {
 904                         rio_spin_unlock_irqrestore( &PortP->portSem, flags);
 905                         continue;
 906                 }
 907                 else HostMapP->Flags &= ~RTA_NEWBOOT;
 908
 909                 PortP->State             = 0;
 910                 PortP->Config           = 0;
 911                 /*
 912                 ** Check out the module type - if it is special (read only etc.)
 913                 ** then we need to set flags in the PortP->Config.
 914                 ** Note: For 16 port RTA, all ports are of the same type.
 915                 */
 916                 if (RtaType == TYPE_RTA16) {
 917                         PortP->Config |= p->RIOModuleTypes[HostP->UnixRups
 918                                 [HostMapP->ID-1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
 919                 } else {
 920                         if ( SubEnt < PORTS_PER_MODULE )
 921                                 PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups
 922                                 [HostMapP->ID-1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 923                         else
 924                                 PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups
 925                                 [HostMapP->ID-1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 926                 }
 927
 928                 /*
 929                 ** more port related flags
 930                 */
 931                 PortP->PortState        = 0;
 932                 PortP->ModemLines       = 0;
 933                 PortP->ModemState       = 0;
 934                 PortP->CookMode         = COOK_WELL;
 935                 PortP->ParamSem         = 0;
 936                 PortP->FlushCmdBodge= 0;
 937                 PortP->WflushFlag       = 0;
 938                 PortP->MagicFlags       = 0;
 939                 PortP->Lock                     = 0;
 940                 PortP->Store            = 0;
 941                 PortP->FirstOpen        = 1;
 942
 943                 /*
 944                 ** Buffers 'n things
 945                 */
 946                 PortP->RxDataStart      = 0;
 947                 PortP->Cor2Copy  = 0;
 948                 PortP->Name              = &HostMapP->Name[0];
 949 #ifdef STATS
 950                 bzero( (caddr_t)&PortP->Stat, sizeof(struct RIOStats) );
 951 #endif
 952                 PortP->statsGather = 0;
 953                 PortP->txchars = 0;
 954                 PortP->rxchars = 0;
 955                 PortP->opens = 0;
 956                 PortP->closes = 0;
 957                 PortP->ioctls = 0;
 958                 if ( PortP->TxRingBuffer )
 959                         bzero( PortP->TxRingBuffer, p->RIOBufferSize );
 960                 else if ( p->RIOBufferSize ) {
 961                         PortP->TxRingBuffer = sysbrk(p->RIOBufferSize);
 962                         bzero( PortP->TxRingBuffer, p->RIOBufferSize );
 963                 }
 964                 PortP->TxBufferOut      = 0;
 965                 PortP->TxBufferIn        = 0;
 966                 PortP->Debug            = 0;
 967                 /*
 968                 ** LastRxTgl stores the state of the rx toggle bit for this
 969                 ** port, to be compared with the state of the next pkt received.
 970                 ** If the same, we have received the same rx pkt from the RTA
 971                 ** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
 972                 */
 973                 PortP->LastRxTgl        = ~(uchar)PHB_RX_TGL;
 974
 975                 /*
 976                 ** and mark the port as usable
 977                 */
 978                 PortP->Mapped = 1;
 979                 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 980         }
 981         if ( HostMapP->SysPort < p->RIOFirstPortsMapped )
 982                 p->RIOFirstPortsMapped = HostMapP->SysPort;
 983         if ( HostMapP->SysPort > p->RIOLastPortsMapped )
 984                 p->RIOLastPortsMapped = HostMapP->SysPort;
 985
 986         return 0;
 987 }
 988
 989 int
 990 RIOChangeName(p, MapP)
 991 struct rio_info *p;
 992 struct Map* MapP;
 993 {
 994         int host;
 995         struct Map *HostMapP;
 996         char *sptr;
 997
 998         rio_dprintk (RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n",
 999                                                                 MapP->HostUniqueNum,MapP->RtaUniqueNum,
1000                                                                 MapP->ID, (int)MapP->SysPort);
1001
1002         if ( MapP->ID > MAX_RUP ) {
1003                 rio_dprintk (RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
1004                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
1005                 return -EINVAL;
1006         }
1007
1008         MapP->Name[MAX_NAME_LEN-1] = '\0';
1009         sptr = MapP->Name;
1010
1011         while ( *sptr ) {
1012                 if ( *sptr<' ' || *sptr>'~' ) {
1013                         rio_dprintk (RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
1014                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
1015                         return -EINVAL;
1016                 }
1017                 sptr++;
1018         }
1019
1020         for ( host=0; host < p->RIONumHosts; host++ ) {
1021                 if ( MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum ) {
1022                         if ( (p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING ) {
1023                                 p->RIOError.Error = HOST_NOT_RUNNING;
1024                                 return -ENXIO;
1025                         }
1026                         if ( MapP->ID==0 ) {
1027                                 CCOPY( MapP->Name, p->RIOHosts[host].Name, MAX_NAME_LEN );
1028                                 return 0;
1029                         }
1030
1031                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID-1];
1032
1033                         if ( HostMapP->RtaUniqueNum != MapP->RtaUniqueNum ) {
1034                                 p->RIOError.Error = RTA_NUMBER_WRONG;
1035                                 return -ENXIO;
1036                         }
1037                         CCOPY( MapP->Name, HostMapP->Name, MAX_NAME_LEN );
1038                         return 0;
1039                 }
1040         }
1041         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
1042         rio_dprintk (RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
1043         return -ENXIO;
1044 }