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 RIONewTable(struct rio_info *p)
  95 {
  96         int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
  97         struct Map *MapP;
  98         struct Map *HostMapP;
  99         struct Host *HostP;
 100
 101         char *cptr;
 102
 103         /*
 104          ** We have been sent a new table to install. We need to break
 105          ** it down into little bits and spread it around a bit to see
 106          ** what we have got.
 107          */
 108         /*
 109          ** Things to check:
 110          ** (things marked 'xx' aren't checked any more!)
 111          ** (1) That there are no booted Hosts/RTAs out there.
 112          ** (2) That the names are properly formed
 113          ** (3) That blank entries really are.
 114          ** xx (4)      That hosts mentioned in the table actually exist. xx
 115          ** (5) That the IDs are unique (per host).
 116          ** (6) That host IDs are zero
 117          ** (7) That port numbers are valid
 118          ** (8) That port numbers aren't duplicated
 119          ** (9) That names aren't duplicated
 120          ** xx (10) That hosts that actually exist are mentioned in the table. xx
 121          */
 122         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
 123         if (p->RIOSystemUp) {   /* (1) */
 124                 p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
 125                 return -EBUSY;
 126         }
 127
 128         p->RIOError.Error = NOTHING_WRONG_AT_ALL;
 129         p->RIOError.Entry = -1;
 130         p->RIOError.Other = -1;
 131
 132         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 133                 MapP = &p->RIOConnectTable[Entry];
 134                 if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
 135                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
 136                         cptr = MapP->Name;      /* (2) */
 137                         cptr[MAX_NAME_LEN - 1] = '\0';
 138                         if (cptr[0] == '\0') {
 139                                 bcopy(MapP->RtaUniqueNum ? "RTA NN" : "HOST NN", MapP->Name, 8);
 140                                 MapP->Name[5] = '0' + Entry / 10;
 141                                 MapP->Name[6] = '0' + Entry % 10;
 142                         }
 143                         while (*cptr) {
 144                                 if (*cptr < ' ' || *cptr > '~') {
 145                                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 146                                         p->RIOError.Entry = Entry;
 147                                         return -ENXIO;
 148                                 }
 149                                 cptr++;
 150                         }
 151                 }
 152
 153                 /*
 154                  ** If the entry saved was a tentative entry then just forget
 155                  ** about it.
 156                  */
 157                 if (MapP->Flags & SLOT_TENTATIVE) {
 158                         MapP->HostUniqueNum = 0;
 159                         MapP->RtaUniqueNum = 0;
 160                         continue;
 161                 }
 162
 163                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
 164                 if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) {      /* (3) */
 165                         if (MapP->ID || MapP->SysPort || MapP->Flags) {
 166                                 rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name);
 167                                 p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
 168                                 p->RIOError.Entry = Entry;
 169                                 return -ENXIO;
 170                         }
 171                         rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
 172                         continue;
 173                 }
 174
 175                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
 176                 for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */
 177                         if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) {
 178                                 HostP = &p->RIOHosts[Host];
 179                                 /*
 180                                  ** having done the lookup, we don't really want to do
 181                                  ** it again, so hang the host number in a safe place
 182                                  */
 183                                 MapP->Topology[0].Unit = Host;
 184                                 break;
 185                         }
 186                 }
 187
 188                 if (Host >= p->RIONumHosts) {
 189                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum);
 190                         MapP->HostUniqueNum = 0;
 191                         /* MapP->RtaUniqueNum   = 0; */
 192                         /* MapP->ID                     = 0; */
 193                         /* MapP->Flags           = 0; */
 194                         /* MapP->SysPort                 = 0; */
 195                         /* MapP->Name[0]                 = 0; */
 196                         continue;
 197                 }
 198
 199                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
 200                 if (MapP->RtaUniqueNum) {       /* (5) */
 201                         if (!MapP->ID) {
 202                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name);
 203                                 p->RIOError.Error = ZERO_RTA_ID;
 204                                 p->RIOError.Entry = Entry;
 205                                 return -ENXIO;
 206                         }
 207                         if (MapP->ID > MAX_RUP) {
 208                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID);
 209                                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 210                                 p->RIOError.Entry = Entry;
 211                                 return -ENXIO;
 212                         }
 213                         for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
 214                                 if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) {
 215                                         rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name);
 216                                         p->RIOError.Error = DUPLICATED_RTA_ID;
 217                                         p->RIOError.Entry = Entry;
 218                                         p->RIOError.Other = SubEnt;
 219                                         return -ENXIO;
 220                                 }
 221                                 /*
 222                                  ** If the RtaUniqueNum is the same, it may be looking at both
 223                                  ** entries for a 16 port RTA, so check the ids
 224                                  */
 225                                 if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum)
 226                                     && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
 227                                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name);
 228                                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name);
 229                                         p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
 230                                         p->RIOError.Entry = Entry;
 231                                         p->RIOError.Other = SubEnt;
 232                                         return -ENXIO;
 233                                 }
 234                         }
 235                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
 236                         /* (7a) */
 237                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
 238                                 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);
 239                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 240                                 p->RIOError.Entry = Entry;
 241                                 return -ENXIO;
 242                         }
 243                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
 244                         /* (7b) */
 245                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
 246                                 rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name);
 247                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 248                                 p->RIOError.Entry = Entry;
 249                                 return -ENXIO;
 250                         }
 251                         for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
 252                                 if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT)
 253                                         continue;
 254                                 if (p->RIOConnectTable[SubEnt].RtaUniqueNum) {
 255                                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
 256                                         /* (8) */
 257                                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) {
 258                                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort);
 259                                                 p->RIOError.Error = TTY_NUMBER_IN_USE;
 260                                                 p->RIOError.Entry = Entry;
 261                                                 p->RIOError.Other = SubEnt;
 262                                                 return -ENXIO;
 263                                         }
 264                                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
 265                                         if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) {   /* (9) */
 266                                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
 267                                                 p->RIOError.Error = NAME_USED_TWICE;
 268                                                 p->RIOError.Entry = Entry;
 269                                                 p->RIOError.Other = SubEnt;
 270                                                 return -ENXIO;
 271                                         }
 272                                 }
 273                         }
 274                 } else {        /* (6) */
 275                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
 276                         if (MapP->ID) {
 277                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name);
 278                                 p->RIOError.Error = HOST_ID_NOT_ZERO;
 279                                 p->RIOError.Entry = Entry;
 280                                 return -ENXIO;
 281                         }
 282                         if (MapP->SysPort != NO_PORT) {
 283                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name);
 284                                 p->RIOError.Error = HOST_SYSPORT_BAD;
 285                                 p->RIOError.Entry = Entry;
 286                                 return -ENXIO;
 287                         }
 288                 }
 289         }
 290
 291         /*
 292          ** wow! if we get here then it's a goody!
 293          */
 294
 295         /*
 296          ** Zero the (old) entries for each host...
 297          */
 298         for (Host = 0; Host < RIO_HOSTS; Host++) {
 299                 for (Entry = 0; Entry < MAX_RUP; Entry++) {
 300                         memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map));
 301                 }
 302                 memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name));
 303         }
 304
 305         /*
 306          ** Copy in the new table entries
 307          */
 308         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 309                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
 310                 MapP = &p->RIOConnectTable[Entry];
 311
 312                 /*
 313                  ** Now, if it is an empty slot ignore it!
 314                  */
 315                 if (MapP->HostUniqueNum == 0)
 316                         continue;
 317
 318                 /*
 319                  ** we saved the host number earlier, so grab it back
 320                  */
 321                 HostP = &p->RIOHosts[MapP->Topology[0].Unit];
 322
 323                 /*
 324                  ** If it is a host, then we only need to fill in the name field.
 325                  */
 326                 if (MapP->ID == 0) {
 327                         rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
 328                         bcopy(MapP->Name, HostP->Name, MAX_NAME_LEN);
 329                         continue;
 330                 }
 331
 332                 /*
 333                  ** Its an RTA entry, so fill in the host mapping entries for it
 334                  ** and the port mapping entries. Notice that entry zero is for
 335                  ** ID one.
 336                  */
 337                 HostMapP = &HostP->Mapping[MapP->ID - 1];
 338
 339                 if (MapP->Flags & SLOT_IN_USE) {
 340                         rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
 341                         /*
 342                          ** structure assign, then sort out the bits we shouldn't have done
 343                          */
 344                         *HostMapP = *MapP;
 345
 346                         HostMapP->Flags = SLOT_IN_USE;
 347                         if (MapP->Flags & RTA16_SECOND_SLOT)
 348                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 349
 350                         RIOReMapPorts(p, HostP, HostMapP);
 351                 } else {
 352                         rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
 353                 }
 354         }
 355
 356         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 357                 p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
 358         }
 359
 360         for (Host = 0; Host < p->RIONumHosts; Host++) {
 361                 for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
 362                         p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 363                         p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
 364                 }
 365                 for (Entry = 0; Entry < MAX_RUP; Entry++) {
 366                         for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
 367                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 368                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK;
 369                         }
 370                 }
 371                 if (!p->RIOHosts[Host].Name[0]) {
 372                         bcopy("HOST 1", p->RIOHosts[Host].Name, 7);
 373                         p->RIOHosts[Host].Name[5] += Host;
 374                 }
 375                 /*
 376                  ** Check that default name assigned is unique.
 377                  */
 378                 Host1 = Host;
 379                 NameIsUnique = 0;
 380                 while (!NameIsUnique) {
 381                         NameIsUnique = 1;
 382                         for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) {
 383                                 if (Host2 == Host)
 384                                         continue;
 385                                 if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
 386                                     == 0) {
 387                                         NameIsUnique = 0;
 388                                         Host1++;
 389                                         if (Host1 >= p->RIONumHosts)
 390                                                 Host1 = 0;
 391                                         p->RIOHosts[Host].Name[5] = '1' + Host1;
 392                                 }
 393                         }
 394                 }
 395                 /*
 396                  ** Rename host if name already used.
 397                  */
 398                 if (Host1 != Host) {
 399                         rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
 400                         bcopy("HOST 1", p->RIOHosts[Host].Name, 7);
 401                         p->RIOHosts[Host].Name[5] += Host1;
 402                 }
 403                 rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
 404         }
 405         return 0;
 406 }
 407
 408 /*
 409 ** User process needs the config table - build it from first
 410 ** principles.
 411 **
 412 *       FIXME: SMP locking
 413 */
 414 int RIOApel(struct rio_info *p)
 415 {
 416         int Host;
 417         int link;
 418         int Rup;
 419         int Next = 0;
 420         struct Map *MapP;
 421         struct Host *HostP;
 422         unsigned long flags;
 423
 424         rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");
 425
 426         memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES);
 427
 428         for (Host = 0; Host < RIO_HOSTS; Host++) {
 429                 rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host);
 430                 HostP = &p->RIOHosts[Host];
 431                 rio_spin_lock_irqsave(&HostP->HostLock, flags);
 432
 433                 MapP = &p->RIOConnectTable[Next++];
 434                 MapP->HostUniqueNum = HostP->UniqueNum;
 435                 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
 436                         continue;
 437                 MapP->RtaUniqueNum = 0;
 438                 MapP->ID = 0;
 439                 MapP->Flags = SLOT_IN_USE;
 440                 MapP->SysPort = NO_PORT;
 441                 for (link = 0; link < LINKS_PER_UNIT; link++)
 442                         MapP->Topology[link] = HostP->Topology[link];
 443                 bcopy(HostP->Name, MapP->Name, MAX_NAME_LEN);
 444                 for (Rup = 0; Rup < MAX_RUP; Rup++) {
 445                         if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) {
 446                                 p->RIOConnectTable[Next] = HostP->Mapping[Rup];
 447                                 if (HostP->Mapping[Rup].Flags & SLOT_IN_USE)
 448                                         p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
 449                                 if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
 450                                         p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
 451                                 if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT)
 452                                         p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
 453                                 Next++;
 454                         }
 455                 }
 456                 rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
 457         }
 458         return 0;
 459 }
 460
 461 /*
 462 ** config.rio has taken a dislike to one of the gross maps entries.
 463 ** if the entry is suitably inactive, then we can gob on it and remove
 464 ** it from the table.
 465 */
 466 int RIODeleteRta(struct rio_info *p, struct Map *MapP)
 467 {
 468         int host, entry, port, link;
 469         int SysPort;
 470         struct Host *HostP;
 471         struct Map *HostMapP;
 472         struct Port *PortP;
 473         int work_done = 0;
 474         unsigned long lock_flags, sem_flags;
 475
 476         rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum);
 477
 478         for (host = 0; host < p->RIONumHosts; host++) {
 479                 HostP = &p->RIOHosts[host];
 480
 481                 rio_spin_lock_irqsave(&HostP->HostLock, lock_flags);
 482
 483                 if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
 484                         rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 485                         continue;
 486                 }
 487
 488                 for (entry = 0; entry < MAX_RUP; entry++) {
 489                         if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) {
 490                                 HostMapP = &HostP->Mapping[entry];
 491                                 rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name);
 492
 493                                 /*
 494                                  ** Check all four links of the unit are disconnected
 495                                  */
 496                                 for (link = 0; link < LINKS_PER_UNIT; link++) {
 497                                         if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) {
 498                                                 rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
 499                                                 p->RIOError.Error = UNIT_IS_IN_USE;
 500                                                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 501                                                 return -EBUSY;
 502                                         }
 503                                 }
 504                                 /*
 505                                  ** Slot has been allocated, BUT not booted/routed/
 506                                  ** connected/selected or anything else-ed
 507                                  */
 508                                 SysPort = HostMapP->SysPort;
 509
 510                                 if (SysPort != NO_PORT) {
 511                                         for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) {
 512                                                 PortP = p->RIOPortp[port];
 513                                                 rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n");
 514
 515                                                 rio_spin_lock_irqsave(&PortP->portSem, sem_flags);
 516
 517                                                 PortP->Mapped = 0;
 518
 519                                                 if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) {
 520
 521                                                         rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n");
 522                                                         PortP->TxBufferIn = PortP->TxBufferOut = 0;
 523                                                         /* What should I do
 524                                                            wakeup( &PortP->TxBufferIn );
 525                                                            wakeup( &PortP->TxBufferOut);
 526                                                          */
 527                                                         PortP->InUse = NOT_INUSE;
 528                                                         /* What should I do
 529                                                            wakeup( &PortP->InUse );
 530                                                            signal(PortP->TtyP->t_pgrp,SIGKILL);
 531                                                            ttyflush(PortP->TtyP,(FREAD|FWRITE));
 532                                                          */
 533                                                         PortP->State |= RIO_CLOSING | RIO_DELETED;
 534                                                 }
 535
 536                                                 /*
 537                                                  ** For the second slot of a 16 port RTA, the
 538                                                  ** driver needs to reset the changes made to
 539                                                  ** the phb to port mappings in RIORouteRup.
 540                                                  */
 541                                                 if (PortP->SecondBlock) {
 542                                                         ushort dest_unit = HostMapP->ID;
 543                                                         ushort dest_port = port - SysPort;
 544                                                         u16 *TxPktP;
 545                                                         PKT *Pkt;
 546
 547                                                         for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) {
 548                                                                 /*
 549                                                                  ** *TxPktP is the pointer to the
 550                                                                  ** transmit packet on the host card.
 551                                                                  ** This needs to be translated into
 552                                                                  ** a 32 bit pointer so it can be
 553                                                                  ** accessed from the driver.
 554                                                                  */
 555                                                                 Pkt = (PKT *) RIO_PTR(HostP->Caddr, readw(&*TxPktP));
 556                                                                 rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", *TxPktP, Pkt->dest_unit, Pkt->dest_port, dest_unit, dest_port);
 557                                                                 writew(dest_unit, &Pkt->dest_unit);
 558                                                                 writew(dest_port, &Pkt->dest_port);
 559                                                         }
 560                                                         rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, PortP->PhbP->destination & 0xff, (PortP->PhbP->destination >> 8) & 0xff, dest_unit, dest_port);
 561                                                         writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination);
 562                                                 }
 563                                                 rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
 564                                         }
 565                                 }
 566                                 rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n");
 567                                 memset(HostMapP, 0, sizeof(struct Map));
 568                                 work_done++;
 569                         }
 570                 }
 571                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 572         }
 573
 574         /* XXXXX lock me up */
 575         for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) {
 576                 if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
 577                         memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map));
 578                         work_done++;
 579                 }
 580                 if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
 581                         memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map));
 582                         work_done++;
 583                 }
 584         }
 585         if (work_done)
 586                 return 0;
 587
 588         rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
 589         p->RIOError.Error = COULDNT_FIND_ENTRY;
 590         return -ENXIO;
 591 }
 592
 593 int RIOAssignRta(struct rio_info *p, struct Map *MapP)
 594 {
 595         int host;
 596         struct Map *HostMapP;
 597         char *sptr;
 598         int link;
 599
 600
 601         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);
 602
 603         if ((MapP->ID != (ushort) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) {
 604                 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 605                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 606                 return -EINVAL;
 607         }
 608         if (MapP->RtaUniqueNum == 0) {
 609                 rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
 610                 p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
 611                 return -EINVAL;
 612         }
 613         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
 614                 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA);
 615                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 616                 return -EINVAL;
 617         }
 618         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
 619                 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort);
 620                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 621                 return -EINVAL;
 622         }
 623
 624         /*
 625          ** Copy the name across to the map entry.
 626          */
 627         MapP->Name[MAX_NAME_LEN - 1] = '\0';
 628         sptr = MapP->Name;
 629         while (*sptr) {
 630                 if (*sptr < ' ' || *sptr > '~') {
 631                         rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 632                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 633                         return -EINVAL;
 634                 }
 635                 sptr++;
 636         }
 637
 638         for (host = 0; host < p->RIONumHosts; host++) {
 639                 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
 640                         if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
 641                                 p->RIOError.Error = HOST_NOT_RUNNING;
 642                                 return -ENXIO;
 643                         }
 644
 645                         /*
 646                          ** Now we have a host we need to allocate an ID
 647                          ** if the entry does not already have one.
 648                          */
 649                         if (MapP->ID == (ushort) - 1) {
 650                                 int nNewID;
 651
 652                                 rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name);
 653                                 /*
 654                                  ** The idea here is to allow RTA's to be assigned
 655                                  ** before they actually appear on the network.
 656                                  ** This allows the addition of RTA's without having
 657                                  ** to plug them in.
 658                                  ** What we do is:
 659                                  **  - Find a free ID and allocate it to the RTA.
 660                                  **  - If this map entry is the second half of a
 661                                  **    16 port entry then find the other half and
 662                                  **    make sure the 2 cross reference each other.
 663                                  */
 664                                 if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) {
 665                                         p->RIOError.Error = COULDNT_FIND_ENTRY;
 666                                         return -EBUSY;
 667                                 }
 668                                 MapP->ID = (ushort) nNewID + 1;
 669                                 rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
 670                                 HostMapP = &p->RIOHosts[host].Mapping[nNewID];
 671                                 HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
 672                                 HostMapP->HostUniqueNum = MapP->HostUniqueNum;
 673                                 HostMapP->ID = MapP->ID;
 674                                 for (link = 0; link < LINKS_PER_UNIT; link++) {
 675                                         HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
 676                                         HostMapP->Topology[link].Link = NO_LINK;
 677                                 }
 678                                 if (MapP->Flags & RTA16_SECOND_SLOT) {
 679                                         int unit;
 680
 681                                         for (unit = 0; unit < MAX_RUP; unit++)
 682                                                 if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum)
 683                                                         break;
 684                                         if (unit == MAX_RUP) {
 685                                                 p->RIOError.Error = COULDNT_FIND_ENTRY;
 686                                                 return -EBUSY;
 687                                         }
 688                                         HostMapP->Flags |= RTA16_SECOND_SLOT;
 689                                         HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
 690                                         p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
 691                                         rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID);
 692                                 }
 693                         }
 694
 695                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
 696
 697                         if (HostMapP->Flags & SLOT_IN_USE) {
 698                                 rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
 699                                 p->RIOError.Error = ID_ALREADY_IN_USE;
 700                                 return -EBUSY;
 701                         }
 702
 703                         /*
 704                          ** Assign the sys ports and the name, and mark the slot as
 705                          ** being in use.
 706                          */
 707                         HostMapP->SysPort = MapP->SysPort;
 708                         if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
 709                                 CCOPY(MapP->Name, HostMapP->Name, MAX_NAME_LEN);
 710                         HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
 711 #ifdef NEED_TO_FIX
 712                         RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]);
 713 #endif
 714                         if (MapP->Flags & RTA16_SECOND_SLOT)
 715                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 716
 717                         RIOReMapPorts(p, &p->RIOHosts[host], HostMapP);
 718                         /*
 719                          ** Adjust 2nd block of 8 phbs
 720                          */
 721                         if (MapP->Flags & RTA16_SECOND_SLOT)
 722                                 RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);
 723
 724                         if (HostMapP->SysPort != NO_PORT) {
 725                                 if (HostMapP->SysPort < p->RIOFirstPortsBooted)
 726                                         p->RIOFirstPortsBooted = HostMapP->SysPort;
 727                                 if (HostMapP->SysPort > p->RIOLastPortsBooted)
 728                                         p->RIOLastPortsBooted = HostMapP->SysPort;
 729                         }
 730                         if (MapP->Flags & RTA16_SECOND_SLOT)
 731                                 rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
 732                         else
 733                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
 734                         return 0;
 735                 }
 736         }
 737         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 738         rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 739         return -ENXIO;
 740 }
 741
 742
 743 int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
 744 {
 745         struct Port *PortP;
 746         uint SubEnt;
 747         uint HostPort;
 748         uint SysPort;
 749         ushort RtaType;
 750         unsigned long flags;
 751
 752         rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID);
 753
 754         /*
 755          ** We need to tell the UnixRups which sysport the rup corresponds to
 756          */
 757         HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort;
 758
 759         if (HostMapP->SysPort == NO_PORT)
 760                 return (0);
 761
 762         RtaType = GetUnitType(HostMapP->RtaUniqueNum);
 763         rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1);
 764
 765         /*
 766          ** now map each of its eight ports
 767          */
 768         for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) {
 769                 rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort);
 770                 SysPort = HostMapP->SysPort + SubEnt;   /* portnumber within system */
 771                 /* portnumber on host */
 772
 773                 HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt;
 774
 775                 rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
 776                 PortP = p->RIOPortp[SysPort];
 777                 rio_dprintk(RIO_DEBUG_TABLE, "Map port\n");
 778
 779                 /*
 780                  ** Point at all the real neat data structures
 781                  */
 782                 rio_spin_lock_irqsave(&PortP->portSem, flags);
 783                 PortP->HostP = HostP;
 784                 PortP->Caddr = HostP->Caddr;
 785
 786                 /*
 787                  ** The PhbP cannot be filled in yet
 788                  ** unless the host has been booted
 789                  */
 790                 if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
 791                         struct PHB *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
 792                         PortP->TxAdd = (u16 *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add));
 793                         PortP->TxStart = (u16 *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start));
 794                         PortP->TxEnd = (u16 *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end));
 795                         PortP->RxRemove = (u16 *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove));
 796                         PortP->RxStart = (u16 *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start));
 797                         PortP->RxEnd = (u16 *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end));
 798                 } else
 799                         PortP->PhbP = NULL;
 800
 801                 /*
 802                  ** port related flags
 803                  */
 804                 PortP->HostPort = HostPort;
 805                 /*
 806                  ** For each part of a 16 port RTA, RupNum is ID - 1.
 807                  */
 808                 PortP->RupNum = HostMapP->ID - 1;
 809                 if (HostMapP->Flags & RTA16_SECOND_SLOT) {
 810                         PortP->ID2 = HostMapP->ID2 - 1;
 811                         PortP->SecondBlock = TRUE;
 812                 } else {
 813                         PortP->ID2 = 0;
 814                         PortP->SecondBlock = FALSE;
 815                 }
 816                 PortP->RtaUniqueNum = HostMapP->RtaUniqueNum;
 817
 818                 /*
 819                  ** If the port was already mapped then thats all we need to do.
 820                  */
 821                 if (PortP->Mapped) {
 822                         rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 823                         continue;
 824                 } else
 825                         HostMapP->Flags &= ~RTA_NEWBOOT;
 826
 827                 PortP->State = 0;
 828                 PortP->Config = 0;
 829                 /*
 830                  ** Check out the module type - if it is special (read only etc.)
 831                  ** then we need to set flags in the PortP->Config.
 832                  ** Note: For 16 port RTA, all ports are of the same type.
 833                  */
 834                 if (RtaType == TYPE_RTA16) {
 835                         PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
 836                 } else {
 837                         if (SubEnt < PORTS_PER_MODULE)
 838                                 PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 839                         else
 840                                 PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 841                 }
 842
 843                 /*
 844                  ** more port related flags
 845                  */
 846                 PortP->PortState = 0;
 847                 PortP->ModemLines = 0;
 848                 PortP->ModemState = 0;
 849                 PortP->CookMode = COOK_WELL;
 850                 PortP->ParamSem = 0;
 851                 PortP->FlushCmdBodge = 0;
 852                 PortP->WflushFlag = 0;
 853                 PortP->MagicFlags = 0;
 854                 PortP->Lock = 0;
 855                 PortP->Store = 0;
 856                 PortP->FirstOpen = 1;
 857
 858                 /*
 859                  ** Buffers 'n things
 860                  */
 861                 PortP->RxDataStart = 0;
 862                 PortP->Cor2Copy = 0;
 863                 PortP->Name = &HostMapP->Name[0];
 864                 PortP->statsGather = 0;
 865                 PortP->txchars = 0;
 866                 PortP->rxchars = 0;
 867                 PortP->opens = 0;
 868                 PortP->closes = 0;
 869                 PortP->ioctls = 0;
 870                 if (PortP->TxRingBuffer)
 871                         memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
 872                 else if (p->RIOBufferSize) {
 873                         PortP->TxRingBuffer = kmalloc(p->RIOBufferSize, GFP_KERNEL);
 874                         memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
 875                 }
 876                 PortP->TxBufferOut = 0;
 877                 PortP->TxBufferIn = 0;
 878                 PortP->Debug = 0;
 879                 /*
 880                  ** LastRxTgl stores the state of the rx toggle bit for this
 881                  ** port, to be compared with the state of the next pkt received.
 882                  ** If the same, we have received the same rx pkt from the RTA
 883                  ** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
 884                  */
 885                 PortP->LastRxTgl = ~(u8) PHB_RX_TGL;
 886
 887                 /*
 888                  ** and mark the port as usable
 889                  */
 890                 PortP->Mapped = 1;
 891                 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 892         }
 893         if (HostMapP->SysPort < p->RIOFirstPortsMapped)
 894                 p->RIOFirstPortsMapped = HostMapP->SysPort;
 895         if (HostMapP->SysPort > p->RIOLastPortsMapped)
 896                 p->RIOLastPortsMapped = HostMapP->SysPort;
 897
 898         return 0;
 899 }
 900
 901 int RIOChangeName(struct rio_info *p, struct Map *MapP)
 902 {
 903         int host;
 904         struct Map *HostMapP;
 905         char *sptr;
 906
 907         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);
 908
 909         if (MapP->ID > MAX_RUP) {
 910                 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 911                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 912                 return -EINVAL;
 913         }
 914
 915         MapP->Name[MAX_NAME_LEN - 1] = '\0';
 916         sptr = MapP->Name;
 917
 918         while (*sptr) {
 919                 if (*sptr < ' ' || *sptr > '~') {
 920                         rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 921                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 922                         return -EINVAL;
 923                 }
 924                 sptr++;
 925         }
 926
 927         for (host = 0; host < p->RIONumHosts; host++) {
 928                 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
 929                         if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
 930                                 p->RIOError.Error = HOST_NOT_RUNNING;
 931                                 return -ENXIO;
 932                         }
 933                         if (MapP->ID == 0) {
 934                                 CCOPY(MapP->Name, p->RIOHosts[host].Name, MAX_NAME_LEN);
 935                                 return 0;
 936                         }
 937
 938                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
 939
 940                         if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) {
 941                                 p->RIOError.Error = RTA_NUMBER_WRONG;
 942                                 return -ENXIO;
 943                         }
 944                         CCOPY(MapP->Name, HostMapP->Name, MAX_NAME_LEN);
 945                         return 0;
 946                 }
 947         }
 948         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 949         rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 950         return -ENXIO;
 951 }