drivers/staging/generic_serial/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
  33 #include <linux/module.h>
  34 #include <linux/slab.h>
  35 #include <linux/errno.h>
  36 #include <linux/interrupt.h>
  37 #include <linux/string.h>
  38
  39 #include <asm/io.h>
  40 #include <asm/system.h>
  41 #include <asm/string.h>
  42 #include <asm/uaccess.h>
  43
  44 #include <linux/termios.h>
  45 #include <linux/serial.h>
  46
  47 #include <linux/generic_serial.h>
  48
  49
  50 #include "linux_compat.h"
  51 #include "rio_linux.h"
  52 #include "pkt.h"
  53 #include "daemon.h"
  54 #include "rio.h"
  55 #include "riospace.h"
  56 #include "cmdpkt.h"
  57 #include "map.h"
  58 #include "rup.h"
  59 #include "port.h"
  60 #include "riodrvr.h"
  61 #include "rioinfo.h"
  62 #include "func.h"
  63 #include "errors.h"
  64 #include "pci.h"
  65
  66 #include "parmmap.h"
  67 #include "unixrup.h"
  68 #include "board.h"
  69 #include "host.h"
  70 #include "phb.h"
  71 #include "link.h"
  72 #include "cmdblk.h"
  73 #include "route.h"
  74 #include "cirrus.h"
  75 #include "rioioctl.h"
  76 #include "param.h"
  77 #include "protsts.h"
  78
  79 /*
  80 ** A configuration table has been loaded. It is now up to us
  81 ** to sort it out and use the information contained therein.
  82 */
  83 int RIONewTable(struct rio_info *p)
  84 {
  85         int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
  86         struct Map *MapP;
  87         struct Map *HostMapP;
  88         struct Host *HostP;
  89
  90         char *cptr;
  91
  92         /*
  93          ** We have been sent a new table to install. We need to break
  94          ** it down into little bits and spread it around a bit to see
  95          ** what we have got.
  96          */
  97         /*
  98          ** Things to check:
  99          ** (things marked 'xx' aren't checked any more!)
 100          ** (1) That there are no booted Hosts/RTAs out there.
 101          ** (2) That the names are properly formed
 102          ** (3) That blank entries really are.
 103          ** xx (4)      That hosts mentioned in the table actually exist. xx
 104          ** (5) That the IDs are unique (per host).
 105          ** (6) That host IDs are zero
 106          ** (7) That port numbers are valid
 107          ** (8) That port numbers aren't duplicated
 108          ** (9) That names aren't duplicated
 109          ** xx (10) That hosts that actually exist are mentioned in the table. xx
 110          */
 111         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
 112         if (p->RIOSystemUp) {   /* (1) */
 113                 p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
 114                 return -EBUSY;
 115         }
 116
 117         p->RIOError.Error = NOTHING_WRONG_AT_ALL;
 118         p->RIOError.Entry = -1;
 119         p->RIOError.Other = -1;
 120
 121         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 122                 MapP = &p->RIOConnectTable[Entry];
 123                 if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
 124                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
 125                         cptr = MapP->Name;      /* (2) */
 126                         cptr[MAX_NAME_LEN - 1] = '\0';
 127                         if (cptr[0] == '\0') {
 128                                 memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA    NN" : "HOST NN", 8);
 129                                 MapP->Name[5] = '0' + Entry / 10;
 130                                 MapP->Name[6] = '0' + Entry % 10;
 131                         }
 132                         while (*cptr) {
 133                                 if (*cptr < ' ' || *cptr > '~') {
 134                                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 135                                         p->RIOError.Entry = Entry;
 136                                         return -ENXIO;
 137                                 }
 138                                 cptr++;
 139                         }
 140                 }
 141
 142                 /*
 143                  ** If the entry saved was a tentative entry then just forget
 144                  ** about it.
 145                  */
 146                 if (MapP->Flags & SLOT_TENTATIVE) {
 147                         MapP->HostUniqueNum = 0;
 148                         MapP->RtaUniqueNum = 0;
 149                         continue;
 150                 }
 151
 152                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
 153                 if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) {      /* (3) */
 154                         if (MapP->ID || MapP->SysPort || MapP->Flags) {
 155                                 rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name);
 156                                 p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
 157                                 p->RIOError.Entry = Entry;
 158                                 return -ENXIO;
 159                         }
 160                         rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
 161                         continue;
 162                 }
 163
 164                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
 165                 for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */
 166                         if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) {
 167                                 HostP = &p->RIOHosts[Host];
 168                                 /*
 169                                  ** having done the lookup, we don't really want to do
 170                                  ** it again, so hang the host number in a safe place
 171                                  */
 172                                 MapP->Topology[0].Unit = Host;
 173                                 break;
 174                         }
 175                 }
 176
 177                 if (Host >= p->RIONumHosts) {
 178                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum);
 179                         MapP->HostUniqueNum = 0;
 180                         /* MapP->RtaUniqueNum   = 0; */
 181                         /* MapP->ID                     = 0; */
 182                         /* MapP->Flags           = 0; */
 183                         /* MapP->SysPort                 = 0; */
 184                         /* MapP->Name[0]                 = 0; */
 185                         continue;
 186                 }
 187
 188                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
 189                 if (MapP->RtaUniqueNum) {       /* (5) */
 190                         if (!MapP->ID) {
 191                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name);
 192                                 p->RIOError.Error = ZERO_RTA_ID;
 193                                 p->RIOError.Entry = Entry;
 194                                 return -ENXIO;
 195                         }
 196                         if (MapP->ID > MAX_RUP) {
 197                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID);
 198                                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 199                                 p->RIOError.Entry = Entry;
 200                                 return -ENXIO;
 201                         }
 202                         for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
 203                                 if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) {
 204                                         rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name);
 205                                         p->RIOError.Error = DUPLICATED_RTA_ID;
 206                                         p->RIOError.Entry = Entry;
 207                                         p->RIOError.Other = SubEnt;
 208                                         return -ENXIO;
 209                                 }
 210                                 /*
 211                                  ** If the RtaUniqueNum is the same, it may be looking at both
 212                                  ** entries for a 16 port RTA, so check the ids
 213                                  */
 214                                 if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum)
 215                                     && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
 216                                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name);
 217                                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name);
 218                                         p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
 219                                         p->RIOError.Entry = Entry;
 220                                         p->RIOError.Other = SubEnt;
 221                                         return -ENXIO;
 222                                 }
 223                         }
 224                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
 225                         /* (7a) */
 226                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
 227                                 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);
 228                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 229                                 p->RIOError.Entry = Entry;
 230                                 return -ENXIO;
 231                         }
 232                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
 233                         /* (7b) */
 234                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
 235                                 rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name);
 236                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 237                                 p->RIOError.Entry = Entry;
 238                                 return -ENXIO;
 239                         }
 240                         for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
 241                                 if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT)
 242                                         continue;
 243                                 if (p->RIOConnectTable[SubEnt].RtaUniqueNum) {
 244                                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
 245                                         /* (8) */
 246                                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) {
 247                                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort);
 248                                                 p->RIOError.Error = TTY_NUMBER_IN_USE;
 249                                                 p->RIOError.Entry = Entry;
 250                                                 p->RIOError.Other = SubEnt;
 251                                                 return -ENXIO;
 252                                         }
 253                                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
 254                                         if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) {   /* (9) */
 255                                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
 256                                                 p->RIOError.Error = NAME_USED_TWICE;
 257                                                 p->RIOError.Entry = Entry;
 258                                                 p->RIOError.Other = SubEnt;
 259                                                 return -ENXIO;
 260                                         }
 261                                 }
 262                         }
 263                 } else {        /* (6) */
 264                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
 265                         if (MapP->ID) {
 266                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name);
 267                                 p->RIOError.Error = HOST_ID_NOT_ZERO;
 268                                 p->RIOError.Entry = Entry;
 269                                 return -ENXIO;
 270                         }
 271                         if (MapP->SysPort != NO_PORT) {
 272                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name);
 273                                 p->RIOError.Error = HOST_SYSPORT_BAD;
 274                                 p->RIOError.Entry = Entry;
 275                                 return -ENXIO;
 276                         }
 277                 }
 278         }
 279
 280         /*
 281          ** wow! if we get here then it's a goody!
 282          */
 283
 284         /*
 285          ** Zero the (old) entries for each host...
 286          */
 287         for (Host = 0; Host < RIO_HOSTS; Host++) {
 288                 for (Entry = 0; Entry < MAX_RUP; Entry++) {
 289                         memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map));
 290                 }
 291                 memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name));
 292         }
 293
 294         /*
 295          ** Copy in the new table entries
 296          */
 297         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 298                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
 299                 MapP = &p->RIOConnectTable[Entry];
 300
 301                 /*
 302                  ** Now, if it is an empty slot ignore it!
 303                  */
 304                 if (MapP->HostUniqueNum == 0)
 305                         continue;
 306
 307                 /*
 308                  ** we saved the host number earlier, so grab it back
 309                  */
 310                 HostP = &p->RIOHosts[MapP->Topology[0].Unit];
 311
 312                 /*
 313                  ** If it is a host, then we only need to fill in the name field.
 314                  */
 315                 if (MapP->ID == 0) {
 316                         rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
 317                         memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN);
 318                         continue;
 319                 }
 320
 321                 /*
 322                  ** Its an RTA entry, so fill in the host mapping entries for it
 323                  ** and the port mapping entries. Notice that entry zero is for
 324                  ** ID one.
 325                  */
 326                 HostMapP = &HostP->Mapping[MapP->ID - 1];
 327
 328                 if (MapP->Flags & SLOT_IN_USE) {
 329                         rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
 330                         /*
 331                          ** structure assign, then sort out the bits we shouldn't have done
 332                          */
 333                         *HostMapP = *MapP;
 334
 335                         HostMapP->Flags = SLOT_IN_USE;
 336                         if (MapP->Flags & RTA16_SECOND_SLOT)
 337                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 338
 339                         RIOReMapPorts(p, HostP, HostMapP);
 340                 } else {
 341                         rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
 342                 }
 343         }
 344
 345         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 346                 p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
 347         }
 348
 349         for (Host = 0; Host < p->RIONumHosts; Host++) {
 350                 for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
 351                         p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 352                         p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
 353                 }
 354                 for (Entry = 0; Entry < MAX_RUP; Entry++) {
 355                         for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
 356                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 357                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK;
 358                         }
 359                 }
 360                 if (!p->RIOHosts[Host].Name[0]) {
 361                         memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
 362                         p->RIOHosts[Host].Name[5] += Host;
 363                 }
 364                 /*
 365                  ** Check that default name assigned is unique.
 366                  */
 367                 Host1 = Host;
 368                 NameIsUnique = 0;
 369                 while (!NameIsUnique) {
 370                         NameIsUnique = 1;
 371                         for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) {
 372                                 if (Host2 == Host)
 373                                         continue;
 374                                 if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
 375                                     == 0) {
 376                                         NameIsUnique = 0;
 377                                         Host1++;
 378                                         if (Host1 >= p->RIONumHosts)
 379                                                 Host1 = 0;
 380                                         p->RIOHosts[Host].Name[5] = '1' + Host1;
 381                                 }
 382                         }
 383                 }
 384                 /*
 385                  ** Rename host if name already used.
 386                  */
 387                 if (Host1 != Host) {
 388                         rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
 389                         memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
 390                         p->RIOHosts[Host].Name[5] += Host1;
 391                 }
 392                 rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
 393         }
 394         return 0;
 395 }
 396
 397 /*
 398 ** User process needs the config table - build it from first
 399 ** principles.
 400 **
 401 *       FIXME: SMP locking
 402 */
 403 int RIOApel(struct rio_info *p)
 404 {
 405         int Host;
 406         int link;
 407         int Rup;
 408         int Next = 0;
 409         struct Map *MapP;
 410         struct Host *HostP;
 411         unsigned long flags;
 412
 413         rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");
 414
 415         memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES);
 416
 417         for (Host = 0; Host < RIO_HOSTS; Host++) {
 418                 rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host);
 419                 HostP = &p->RIOHosts[Host];
 420                 rio_spin_lock_irqsave(&HostP->HostLock, flags);
 421
 422                 MapP = &p->RIOConnectTable[Next++];
 423                 MapP->HostUniqueNum = HostP->UniqueNum;
 424                 if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
 425                         rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
 426                         continue;
 427                 }
 428                 MapP->RtaUniqueNum = 0;
 429                 MapP->ID = 0;
 430                 MapP->Flags = SLOT_IN_USE;
 431                 MapP->SysPort = NO_PORT;
 432                 for (link = 0; link < LINKS_PER_UNIT; link++)
 433                         MapP->Topology[link] = HostP->Topology[link];
 434                 memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN);
 435                 for (Rup = 0; Rup < MAX_RUP; Rup++) {
 436                         if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) {
 437                                 p->RIOConnectTable[Next] = HostP->Mapping[Rup];
 438                                 if (HostP->Mapping[Rup].Flags & SLOT_IN_USE)
 439                                         p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
 440                                 if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
 441                                         p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
 442                                 if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT)
 443                                         p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
 444                                 Next++;
 445                         }
 446                 }
 447                 rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
 448         }
 449         return 0;
 450 }
 451
 452 /*
 453 ** config.rio has taken a dislike to one of the gross maps entries.
 454 ** if the entry is suitably inactive, then we can gob on it and remove
 455 ** it from the table.
 456 */
 457 int RIODeleteRta(struct rio_info *p, struct Map *MapP)
 458 {
 459         int host, entry, port, link;
 460         int SysPort;
 461         struct Host *HostP;
 462         struct Map *HostMapP;
 463         struct Port *PortP;
 464         int work_done = 0;
 465         unsigned long lock_flags, sem_flags;
 466
 467         rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum);
 468
 469         for (host = 0; host < p->RIONumHosts; host++) {
 470                 HostP = &p->RIOHosts[host];
 471
 472                 rio_spin_lock_irqsave(&HostP->HostLock, lock_flags);
 473
 474                 if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
 475                         rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 476                         continue;
 477                 }
 478
 479                 for (entry = 0; entry < MAX_RUP; entry++) {
 480                         if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) {
 481                                 HostMapP = &HostP->Mapping[entry];
 482                                 rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name);
 483
 484                                 /*
 485                                  ** Check all four links of the unit are disconnected
 486                                  */
 487                                 for (link = 0; link < LINKS_PER_UNIT; link++) {
 488                                         if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) {
 489                                                 rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
 490                                                 p->RIOError.Error = UNIT_IS_IN_USE;
 491                                                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 492                                                 return -EBUSY;
 493                                         }
 494                                 }
 495                                 /*
 496                                  ** Slot has been allocated, BUT not booted/routed/
 497                                  ** connected/selected or anything else-ed
 498                                  */
 499                                 SysPort = HostMapP->SysPort;
 500
 501                                 if (SysPort != NO_PORT) {
 502                                         for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) {
 503                                                 PortP = p->RIOPortp[port];
 504                                                 rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n");
 505
 506                                                 rio_spin_lock_irqsave(&PortP->portSem, sem_flags);
 507
 508                                                 PortP->Mapped = 0;
 509
 510                                                 if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) {
 511
 512                                                         rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n");
 513                                                         PortP->TxBufferIn = PortP->TxBufferOut = 0;
 514                                                         /* What should I do
 515                                                            wakeup( &PortP->TxBufferIn );
 516                                                            wakeup( &PortP->TxBufferOut);
 517                                                          */
 518                                                         PortP->InUse = NOT_INUSE;
 519                                                         /* What should I do
 520                                                            wakeup( &PortP->InUse );
 521                                                            signal(PortP->TtyP->t_pgrp,SIGKILL);
 522                                                            ttyflush(PortP->TtyP,(FREAD|FWRITE));
 523                                                          */
 524                                                         PortP->State |= RIO_CLOSING | RIO_DELETED;
 525                                                 }
 526
 527                                                 /*
 528                                                  ** For the second slot of a 16 port RTA, the
 529                                                  ** driver needs to reset the changes made to
 530                                                  ** the phb to port mappings in RIORouteRup.
 531                                                  */
 532                                                 if (PortP->SecondBlock) {
 533                                                         u16 dest_unit = HostMapP->ID;
 534                                                         u16 dest_port = port - SysPort;
 535                                                         u16 __iomem *TxPktP;
 536                                                         struct PKT __iomem *Pkt;
 537
 538                                                         for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) {
 539                                                                 /*
 540                                                                  ** *TxPktP is the pointer to the
 541                                                                  ** transmit packet on the host card.
 542                                                                  ** This needs to be translated into
 543                                                                  ** a 32 bit pointer so it can be
 544                                                                  ** accessed from the driver.
 545                                                                  */
 546                                                                 Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP));
 547                                                                 rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", readw(TxPktP), readb(&Pkt->dest_unit), readb(&Pkt->dest_port), dest_unit, dest_port);
 548                                                                 writew(dest_unit, &Pkt->dest_unit);
 549                                                                 writew(dest_port, &Pkt->dest_port);
 550                                                         }
 551                                                         rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, readb(&PortP->PhbP->destination) & 0xff, (readb(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port);
 552                                                         writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination);
 553                                                 }
 554                                                 rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
 555                                         }
 556                                 }
 557                                 rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n");
 558                                 memset(HostMapP, 0, sizeof(struct Map));
 559                                 work_done++;
 560                         }
 561                 }
 562                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 563         }
 564
 565         /* XXXXX lock me up */
 566         for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) {
 567                 if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
 568                         memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map));
 569                         work_done++;
 570                 }
 571                 if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
 572                         memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map));
 573                         work_done++;
 574                 }
 575         }
 576         if (work_done)
 577                 return 0;
 578
 579         rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
 580         p->RIOError.Error = COULDNT_FIND_ENTRY;
 581         return -ENXIO;
 582 }
 583
 584 int RIOAssignRta(struct rio_info *p, struct Map *MapP)
 585 {
 586         int host;
 587         struct Map *HostMapP;
 588         char *sptr;
 589         int link;
 590
 591
 592         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);
 593
 594         if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) {
 595                 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 596                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 597                 return -EINVAL;
 598         }
 599         if (MapP->RtaUniqueNum == 0) {
 600                 rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
 601                 p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
 602                 return -EINVAL;
 603         }
 604         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
 605                 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA);
 606                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 607                 return -EINVAL;
 608         }
 609         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
 610                 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort);
 611                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 612                 return -EINVAL;
 613         }
 614
 615         /*
 616          ** Copy the name across to the map entry.
 617          */
 618         MapP->Name[MAX_NAME_LEN - 1] = '\0';
 619         sptr = MapP->Name;
 620         while (*sptr) {
 621                 if (*sptr < ' ' || *sptr > '~') {
 622                         rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 623                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 624                         return -EINVAL;
 625                 }
 626                 sptr++;
 627         }
 628
 629         for (host = 0; host < p->RIONumHosts; host++) {
 630                 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
 631                         if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
 632                                 p->RIOError.Error = HOST_NOT_RUNNING;
 633                                 return -ENXIO;
 634                         }
 635
 636                         /*
 637                          ** Now we have a host we need to allocate an ID
 638                          ** if the entry does not already have one.
 639                          */
 640                         if (MapP->ID == (u16) - 1) {
 641                                 int nNewID;
 642
 643                                 rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name);
 644                                 /*
 645                                  ** The idea here is to allow RTA's to be assigned
 646                                  ** before they actually appear on the network.
 647                                  ** This allows the addition of RTA's without having
 648                                  ** to plug them in.
 649                                  ** What we do is:
 650                                  **  - Find a free ID and allocate it to the RTA.
 651                                  **  - If this map entry is the second half of a
 652                                  **    16 port entry then find the other half and
 653                                  **    make sure the 2 cross reference each other.
 654                                  */
 655                                 if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) {
 656                                         p->RIOError.Error = COULDNT_FIND_ENTRY;
 657                                         return -EBUSY;
 658                                 }
 659                                 MapP->ID = (u16) nNewID + 1;
 660                                 rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
 661                                 HostMapP = &p->RIOHosts[host].Mapping[nNewID];
 662                                 HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
 663                                 HostMapP->HostUniqueNum = MapP->HostUniqueNum;
 664                                 HostMapP->ID = MapP->ID;
 665                                 for (link = 0; link < LINKS_PER_UNIT; link++) {
 666                                         HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
 667                                         HostMapP->Topology[link].Link = NO_LINK;
 668                                 }
 669                                 if (MapP->Flags & RTA16_SECOND_SLOT) {
 670                                         int unit;
 671
 672                                         for (unit = 0; unit < MAX_RUP; unit++)
 673                                                 if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum)
 674                                                         break;
 675                                         if (unit == MAX_RUP) {
 676                                                 p->RIOError.Error = COULDNT_FIND_ENTRY;
 677                                                 return -EBUSY;
 678                                         }
 679                                         HostMapP->Flags |= RTA16_SECOND_SLOT;
 680                                         HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
 681                                         p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
 682                                         rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID);
 683                                 }
 684                         }
 685
 686                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
 687
 688                         if (HostMapP->Flags & SLOT_IN_USE) {
 689                                 rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
 690                                 p->RIOError.Error = ID_ALREADY_IN_USE;
 691                                 return -EBUSY;
 692                         }
 693
 694                         /*
 695                          ** Assign the sys ports and the name, and mark the slot as
 696                          ** being in use.
 697                          */
 698                         HostMapP->SysPort = MapP->SysPort;
 699                         if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
 700                                 memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
 701                         HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
 702 #ifdef NEED_TO_FIX
 703                         RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]);
 704 #endif
 705                         if (MapP->Flags & RTA16_SECOND_SLOT)
 706                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 707
 708                         RIOReMapPorts(p, &p->RIOHosts[host], HostMapP);
 709                         /*
 710                          ** Adjust 2nd block of 8 phbs
 711                          */
 712                         if (MapP->Flags & RTA16_SECOND_SLOT)
 713                                 RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);
 714
 715                         if (HostMapP->SysPort != NO_PORT) {
 716                                 if (HostMapP->SysPort < p->RIOFirstPortsBooted)
 717                                         p->RIOFirstPortsBooted = HostMapP->SysPort;
 718                                 if (HostMapP->SysPort > p->RIOLastPortsBooted)
 719                                         p->RIOLastPortsBooted = HostMapP->SysPort;
 720                         }
 721                         if (MapP->Flags & RTA16_SECOND_SLOT)
 722                                 rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
 723                         else
 724                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
 725                         return 0;
 726                 }
 727         }
 728         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 729         rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 730         return -ENXIO;
 731 }
 732
 733
 734 int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
 735 {
 736         struct Port *PortP;
 737         unsigned int SubEnt;
 738         unsigned int HostPort;
 739         unsigned int SysPort;
 740         u16 RtaType;
 741         unsigned long flags;
 742
 743         rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID);
 744
 745         /*
 746          ** We need to tell the UnixRups which sysport the rup corresponds to
 747          */
 748         HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort;
 749
 750         if (HostMapP->SysPort == NO_PORT)
 751                 return (0);
 752
 753         RtaType = GetUnitType(HostMapP->RtaUniqueNum);
 754         rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1);
 755
 756         /*
 757          ** now map each of its eight ports
 758          */
 759         for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) {
 760                 rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort);
 761                 SysPort = HostMapP->SysPort + SubEnt;   /* portnumber within system */
 762                 /* portnumber on host */
 763
 764                 HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt;
 765
 766                 rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
 767                 PortP = p->RIOPortp[SysPort];
 768                 rio_dprintk(RIO_DEBUG_TABLE, "Map port\n");
 769
 770                 /*
 771                  ** Point at all the real neat data structures
 772                  */
 773                 rio_spin_lock_irqsave(&PortP->portSem, flags);
 774                 PortP->HostP = HostP;
 775                 PortP->Caddr = HostP->Caddr;
 776
 777                 /*
 778                  ** The PhbP cannot be filled in yet
 779                  ** unless the host has been booted
 780                  */
 781                 if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
 782                         struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
 783                         PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add));
 784                         PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start));
 785                         PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end));
 786                         PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove));
 787                         PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start));
 788                         PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end));
 789                 } else
 790                         PortP->PhbP = NULL;
 791
 792                 /*
 793                  ** port related flags
 794                  */
 795                 PortP->HostPort = HostPort;
 796                 /*
 797                  ** For each part of a 16 port RTA, RupNum is ID - 1.
 798                  */
 799                 PortP->RupNum = HostMapP->ID - 1;
 800                 if (HostMapP->Flags & RTA16_SECOND_SLOT) {
 801                         PortP->ID2 = HostMapP->ID2 - 1;
 802                         PortP->SecondBlock = 1;
 803                 } else {
 804                         PortP->ID2 = 0;
 805                         PortP->SecondBlock = 0;
 806                 }
 807                 PortP->RtaUniqueNum = HostMapP->RtaUniqueNum;
 808
 809                 /*
 810                  ** If the port was already mapped then thats all we need to do.
 811                  */
 812                 if (PortP->Mapped) {
 813                         rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 814                         continue;
 815                 } else
 816                         HostMapP->Flags &= ~RTA_NEWBOOT;
 817
 818                 PortP->State = 0;
 819                 PortP->Config = 0;
 820                 /*
 821                  ** Check out the module type - if it is special (read only etc.)
 822                  ** then we need to set flags in the PortP->Config.
 823                  ** Note: For 16 port RTA, all ports are of the same type.
 824                  */
 825                 if (RtaType == TYPE_RTA16) {
 826                         PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
 827                 } else {
 828                         if (SubEnt < PORTS_PER_MODULE)
 829                                 PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 830                         else
 831                                 PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 832                 }
 833
 834                 /*
 835                  ** more port related flags
 836                  */
 837                 PortP->PortState = 0;
 838                 PortP->ModemLines = 0;
 839                 PortP->ModemState = 0;
 840                 PortP->CookMode = COOK_WELL;
 841                 PortP->ParamSem = 0;
 842                 PortP->FlushCmdBodge = 0;
 843                 PortP->WflushFlag = 0;
 844                 PortP->MagicFlags = 0;
 845                 PortP->Lock = 0;
 846                 PortP->Store = 0;
 847                 PortP->FirstOpen = 1;
 848
 849                 /*
 850                  ** Buffers 'n things
 851                  */
 852                 PortP->RxDataStart = 0;
 853                 PortP->Cor2Copy = 0;
 854                 PortP->Name = &HostMapP->Name[0];
 855                 PortP->statsGather = 0;
 856                 PortP->txchars = 0;
 857                 PortP->rxchars = 0;
 858                 PortP->opens = 0;
 859                 PortP->closes = 0;
 860                 PortP->ioctls = 0;
 861                 if (PortP->TxRingBuffer)
 862                         memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
 863                 else if (p->RIOBufferSize) {
 864                         PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL);
 865                 }
 866                 PortP->TxBufferOut = 0;
 867                 PortP->TxBufferIn = 0;
 868                 PortP->Debug = 0;
 869                 /*
 870                  ** LastRxTgl stores the state of the rx toggle bit for this
 871                  ** port, to be compared with the state of the next pkt received.
 872                  ** If the same, we have received the same rx pkt from the RTA
 873                  ** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
 874                  */
 875                 PortP->LastRxTgl = ~(u8) PHB_RX_TGL;
 876
 877                 /*
 878                  ** and mark the port as usable
 879                  */
 880                 PortP->Mapped = 1;
 881                 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 882         }
 883         if (HostMapP->SysPort < p->RIOFirstPortsMapped)
 884                 p->RIOFirstPortsMapped = HostMapP->SysPort;
 885         if (HostMapP->SysPort > p->RIOLastPortsMapped)
 886                 p->RIOLastPortsMapped = HostMapP->SysPort;
 887
 888         return 0;
 889 }
 890
 891 int RIOChangeName(struct rio_info *p, struct Map *MapP)
 892 {
 893         int host;
 894         struct Map *HostMapP;
 895         char *sptr;
 896
 897         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);
 898
 899         if (MapP->ID > MAX_RUP) {
 900                 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 901                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 902                 return -EINVAL;
 903         }
 904
 905         MapP->Name[MAX_NAME_LEN - 1] = '\0';
 906         sptr = MapP->Name;
 907
 908         while (*sptr) {
 909                 if (*sptr < ' ' || *sptr > '~') {
 910                         rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 911                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 912                         return -EINVAL;
 913                 }
 914                 sptr++;
 915         }
 916
 917         for (host = 0; host < p->RIONumHosts; host++) {
 918                 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
 919                         if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
 920                                 p->RIOError.Error = HOST_NOT_RUNNING;
 921                                 return -ENXIO;
 922                         }
 923                         if (MapP->ID == 0) {
 924                                 memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN);
 925                                 return 0;
 926                         }
 927
 928                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
 929
 930                         if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) {
 931                                 p->RIOError.Error = RTA_NUMBER_WRONG;
 932                                 return -ENXIO;
 933                         }
 934                         memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
 935                         return 0;
 936                 }
 937         }
 938         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 939         rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 940         return -ENXIO;
 941 }