git.oblomov.eu Git - linux-2.6/blob - 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 "pkt.h"
  57 #include "daemon.h"
  58 #include "rio.h"
  59 #include "riospace.h"
  60 #include "cmdpkt.h"
  61 #include "map.h"
  62 #include "rup.h"
  63 #include "port.h"
  64 #include "riodrvr.h"
  65 #include "rioinfo.h"
  66 #include "func.h"
  67 #include "errors.h"
  68 #include "pci.h"
  69
  70 #include "parmmap.h"
  71 #include "unixrup.h"
  72 #include "board.h"
  73 #include "host.h"
  74 #include "phb.h"
  75 #include "link.h"
  76 #include "cmdblk.h"
  77 #include "route.h"
  78 #include "cirrus.h"
  79 #include "rioioctl.h"
  80 #include "param.h"
  81 #include "protsts.h"
  82
  83 /*
  84 ** A configuration table has been loaded. It is now up to us
  85 ** to sort it out and use the information contained therein.
  86 */
  87 int RIONewTable(struct rio_info *p)
  88 {
  89         int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
  90         struct Map *MapP;
  91         struct Map *HostMapP;
  92         struct Host *HostP;
  93
  94         char *cptr;
  95
  96         /*
  97          ** We have been sent a new table to install. We need to break
  98          ** it down into little bits and spread it around a bit to see
  99          ** what we have got.
 100          */
 101         /*
 102          ** Things to check:
 103          ** (things marked 'xx' aren't checked any more!)
 104          ** (1) That there are no booted Hosts/RTAs out there.
 105          ** (2) That the names are properly formed
 106          ** (3) That blank entries really are.
 107          ** xx (4)      That hosts mentioned in the table actually exist. xx
 108          ** (5) That the IDs are unique (per host).
 109          ** (6) That host IDs are zero
 110          ** (7) That port numbers are valid
 111          ** (8) That port numbers aren't duplicated
 112          ** (9) That names aren't duplicated
 113          ** xx (10) That hosts that actually exist are mentioned in the table. xx
 114          */
 115         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
 116         if (p->RIOSystemUp) {   /* (1) */
 117                 p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
 118                 return -EBUSY;
 119         }
 120
 121         p->RIOError.Error = NOTHING_WRONG_AT_ALL;
 122         p->RIOError.Entry = -1;
 123         p->RIOError.Other = -1;
 124
 125         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 126                 MapP = &p->RIOConnectTable[Entry];
 127                 if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
 128                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
 129                         cptr = MapP->Name;      /* (2) */
 130                         cptr[MAX_NAME_LEN - 1] = '\0';
 131                         if (cptr[0] == '\0') {
 132                                 memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA    NN" : "HOST NN", 8);
 133                                 MapP->Name[5] = '0' + Entry / 10;
 134                                 MapP->Name[6] = '0' + Entry % 10;
 135                         }
 136                         while (*cptr) {
 137                                 if (*cptr < ' ' || *cptr > '~') {
 138                                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 139                                         p->RIOError.Entry = Entry;
 140                                         return -ENXIO;
 141                                 }
 142                                 cptr++;
 143                         }
 144                 }
 145
 146                 /*
 147                  ** If the entry saved was a tentative entry then just forget
 148                  ** about it.
 149                  */
 150                 if (MapP->Flags & SLOT_TENTATIVE) {
 151                         MapP->HostUniqueNum = 0;
 152                         MapP->RtaUniqueNum = 0;
 153                         continue;
 154                 }
 155
 156                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
 157                 if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) {      /* (3) */
 158                         if (MapP->ID || MapP->SysPort || MapP->Flags) {
 159                                 rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name);
 160                                 p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
 161                                 p->RIOError.Entry = Entry;
 162                                 return -ENXIO;
 163                         }
 164                         rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
 165                         continue;
 166                 }
 167
 168                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
 169                 for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */
 170                         if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) {
 171                                 HostP = &p->RIOHosts[Host];
 172                                 /*
 173                                  ** having done the lookup, we don't really want to do
 174                                  ** it again, so hang the host number in a safe place
 175                                  */
 176                                 MapP->Topology[0].Unit = Host;
 177                                 break;
 178                         }
 179                 }
 180
 181                 if (Host >= p->RIONumHosts) {
 182                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum);
 183                         MapP->HostUniqueNum = 0;
 184                         /* MapP->RtaUniqueNum   = 0; */
 185                         /* MapP->ID                     = 0; */
 186                         /* MapP->Flags           = 0; */
 187                         /* MapP->SysPort                 = 0; */
 188                         /* MapP->Name[0]                 = 0; */
 189                         continue;
 190                 }
 191
 192                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
 193                 if (MapP->RtaUniqueNum) {       /* (5) */
 194                         if (!MapP->ID) {
 195                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name);
 196                                 p->RIOError.Error = ZERO_RTA_ID;
 197                                 p->RIOError.Entry = Entry;
 198                                 return -ENXIO;
 199                         }
 200                         if (MapP->ID > MAX_RUP) {
 201                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID);
 202                                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 203                                 p->RIOError.Entry = Entry;
 204                                 return -ENXIO;
 205                         }
 206                         for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
 207                                 if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) {
 208                                         rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name);
 209                                         p->RIOError.Error = DUPLICATED_RTA_ID;
 210                                         p->RIOError.Entry = Entry;
 211                                         p->RIOError.Other = SubEnt;
 212                                         return -ENXIO;
 213                                 }
 214                                 /*
 215                                  ** If the RtaUniqueNum is the same, it may be looking at both
 216                                  ** entries for a 16 port RTA, so check the ids
 217                                  */
 218                                 if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum)
 219                                     && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
 220                                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name);
 221                                         rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name);
 222                                         p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
 223                                         p->RIOError.Entry = Entry;
 224                                         p->RIOError.Other = SubEnt;
 225                                         return -ENXIO;
 226                                 }
 227                         }
 228                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
 229                         /* (7a) */
 230                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
 231                                 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);
 232                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 233                                 p->RIOError.Entry = Entry;
 234                                 return -ENXIO;
 235                         }
 236                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
 237                         /* (7b) */
 238                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
 239                                 rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name);
 240                                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 241                                 p->RIOError.Entry = Entry;
 242                                 return -ENXIO;
 243                         }
 244                         for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
 245                                 if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT)
 246                                         continue;
 247                                 if (p->RIOConnectTable[SubEnt].RtaUniqueNum) {
 248                                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
 249                                         /* (8) */
 250                                         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) {
 251                                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort);
 252                                                 p->RIOError.Error = TTY_NUMBER_IN_USE;
 253                                                 p->RIOError.Entry = Entry;
 254                                                 p->RIOError.Other = SubEnt;
 255                                                 return -ENXIO;
 256                                         }
 257                                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
 258                                         if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) {   /* (9) */
 259                                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
 260                                                 p->RIOError.Error = NAME_USED_TWICE;
 261                                                 p->RIOError.Entry = Entry;
 262                                                 p->RIOError.Other = SubEnt;
 263                                                 return -ENXIO;
 264                                         }
 265                                 }
 266                         }
 267                 } else {        /* (6) */
 268                         rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
 269                         if (MapP->ID) {
 270                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name);
 271                                 p->RIOError.Error = HOST_ID_NOT_ZERO;
 272                                 p->RIOError.Entry = Entry;
 273                                 return -ENXIO;
 274                         }
 275                         if (MapP->SysPort != NO_PORT) {
 276                                 rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name);
 277                                 p->RIOError.Error = HOST_SYSPORT_BAD;
 278                                 p->RIOError.Entry = Entry;
 279                                 return -ENXIO;
 280                         }
 281                 }
 282         }
 283
 284         /*
 285          ** wow! if we get here then it's a goody!
 286          */
 287
 288         /*
 289          ** Zero the (old) entries for each host...
 290          */
 291         for (Host = 0; Host < RIO_HOSTS; Host++) {
 292                 for (Entry = 0; Entry < MAX_RUP; Entry++) {
 293                         memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map));
 294                 }
 295                 memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name));
 296         }
 297
 298         /*
 299          ** Copy in the new table entries
 300          */
 301         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 302                 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
 303                 MapP = &p->RIOConnectTable[Entry];
 304
 305                 /*
 306                  ** Now, if it is an empty slot ignore it!
 307                  */
 308                 if (MapP->HostUniqueNum == 0)
 309                         continue;
 310
 311                 /*
 312                  ** we saved the host number earlier, so grab it back
 313                  */
 314                 HostP = &p->RIOHosts[MapP->Topology[0].Unit];
 315
 316                 /*
 317                  ** If it is a host, then we only need to fill in the name field.
 318                  */
 319                 if (MapP->ID == 0) {
 320                         rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
 321                         memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN);
 322                         continue;
 323                 }
 324
 325                 /*
 326                  ** Its an RTA entry, so fill in the host mapping entries for it
 327                  ** and the port mapping entries. Notice that entry zero is for
 328                  ** ID one.
 329                  */
 330                 HostMapP = &HostP->Mapping[MapP->ID - 1];
 331
 332                 if (MapP->Flags & SLOT_IN_USE) {
 333                         rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
 334                         /*
 335                          ** structure assign, then sort out the bits we shouldn't have done
 336                          */
 337                         *HostMapP = *MapP;
 338
 339                         HostMapP->Flags = SLOT_IN_USE;
 340                         if (MapP->Flags & RTA16_SECOND_SLOT)
 341                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 342
 343                         RIOReMapPorts(p, HostP, HostMapP);
 344                 } else {
 345                         rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
 346                 }
 347         }
 348
 349         for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
 350                 p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
 351         }
 352
 353         for (Host = 0; Host < p->RIONumHosts; Host++) {
 354                 for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
 355                         p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 356                         p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
 357                 }
 358                 for (Entry = 0; Entry < MAX_RUP; Entry++) {
 359                         for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
 360                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
 361                                 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK;
 362                         }
 363                 }
 364                 if (!p->RIOHosts[Host].Name[0]) {
 365                         memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
 366                         p->RIOHosts[Host].Name[5] += Host;
 367                 }
 368                 /*
 369                  ** Check that default name assigned is unique.
 370                  */
 371                 Host1 = Host;
 372                 NameIsUnique = 0;
 373                 while (!NameIsUnique) {
 374                         NameIsUnique = 1;
 375                         for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) {
 376                                 if (Host2 == Host)
 377                                         continue;
 378                                 if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
 379                                     == 0) {
 380                                         NameIsUnique = 0;
 381                                         Host1++;
 382                                         if (Host1 >= p->RIONumHosts)
 383                                                 Host1 = 0;
 384                                         p->RIOHosts[Host].Name[5] = '1' + Host1;
 385                                 }
 386                         }
 387                 }
 388                 /*
 389                  ** Rename host if name already used.
 390                  */
 391                 if (Host1 != Host) {
 392                         rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
 393                         memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
 394                         p->RIOHosts[Host].Name[5] += Host1;
 395                 }
 396                 rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
 397         }
 398         return 0;
 399 }
 400
 401 /*
 402 ** User process needs the config table - build it from first
 403 ** principles.
 404 **
 405 *       FIXME: SMP locking
 406 */
 407 int RIOApel(struct rio_info *p)
 408 {
 409         int Host;
 410         int link;
 411         int Rup;
 412         int Next = 0;
 413         struct Map *MapP;
 414         struct Host *HostP;
 415         unsigned long flags;
 416
 417         rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");
 418
 419         memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES);
 420
 421         for (Host = 0; Host < RIO_HOSTS; Host++) {
 422                 rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host);
 423                 HostP = &p->RIOHosts[Host];
 424                 rio_spin_lock_irqsave(&HostP->HostLock, flags);
 425
 426                 MapP = &p->RIOConnectTable[Next++];
 427                 MapP->HostUniqueNum = HostP->UniqueNum;
 428                 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
 429                         continue;
 430                 MapP->RtaUniqueNum = 0;
 431                 MapP->ID = 0;
 432                 MapP->Flags = SLOT_IN_USE;
 433                 MapP->SysPort = NO_PORT;
 434                 for (link = 0; link < LINKS_PER_UNIT; link++)
 435                         MapP->Topology[link] = HostP->Topology[link];
 436                 memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN);
 437                 for (Rup = 0; Rup < MAX_RUP; Rup++) {
 438                         if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) {
 439                                 p->RIOConnectTable[Next] = HostP->Mapping[Rup];
 440                                 if (HostP->Mapping[Rup].Flags & SLOT_IN_USE)
 441                                         p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
 442                                 if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
 443                                         p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
 444                                 if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT)
 445                                         p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
 446                                 Next++;
 447                         }
 448                 }
 449                 rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
 450         }
 451         return 0;
 452 }
 453
 454 /*
 455 ** config.rio has taken a dislike to one of the gross maps entries.
 456 ** if the entry is suitably inactive, then we can gob on it and remove
 457 ** it from the table.
 458 */
 459 int RIODeleteRta(struct rio_info *p, struct Map *MapP)
 460 {
 461         int host, entry, port, link;
 462         int SysPort;
 463         struct Host *HostP;
 464         struct Map *HostMapP;
 465         struct Port *PortP;
 466         int work_done = 0;
 467         unsigned long lock_flags, sem_flags;
 468
 469         rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum);
 470
 471         for (host = 0; host < p->RIONumHosts; host++) {
 472                 HostP = &p->RIOHosts[host];
 473
 474                 rio_spin_lock_irqsave(&HostP->HostLock, lock_flags);
 475
 476                 if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
 477                         rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 478                         continue;
 479                 }
 480
 481                 for (entry = 0; entry < MAX_RUP; entry++) {
 482                         if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) {
 483                                 HostMapP = &HostP->Mapping[entry];
 484                                 rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name);
 485
 486                                 /*
 487                                  ** Check all four links of the unit are disconnected
 488                                  */
 489                                 for (link = 0; link < LINKS_PER_UNIT; link++) {
 490                                         if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) {
 491                                                 rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
 492                                                 p->RIOError.Error = UNIT_IS_IN_USE;
 493                                                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 494                                                 return -EBUSY;
 495                                         }
 496                                 }
 497                                 /*
 498                                  ** Slot has been allocated, BUT not booted/routed/
 499                                  ** connected/selected or anything else-ed
 500                                  */
 501                                 SysPort = HostMapP->SysPort;
 502
 503                                 if (SysPort != NO_PORT) {
 504                                         for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) {
 505                                                 PortP = p->RIOPortp[port];
 506                                                 rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n");
 507
 508                                                 rio_spin_lock_irqsave(&PortP->portSem, sem_flags);
 509
 510                                                 PortP->Mapped = 0;
 511
 512                                                 if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) {
 513
 514                                                         rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n");
 515                                                         PortP->TxBufferIn = PortP->TxBufferOut = 0;
 516                                                         /* What should I do
 517                                                            wakeup( &PortP->TxBufferIn );
 518                                                            wakeup( &PortP->TxBufferOut);
 519                                                          */
 520                                                         PortP->InUse = NOT_INUSE;
 521                                                         /* What should I do
 522                                                            wakeup( &PortP->InUse );
 523                                                            signal(PortP->TtyP->t_pgrp,SIGKILL);
 524                                                            ttyflush(PortP->TtyP,(FREAD|FWRITE));
 525                                                          */
 526                                                         PortP->State |= RIO_CLOSING | RIO_DELETED;
 527                                                 }
 528
 529                                                 /*
 530                                                  ** For the second slot of a 16 port RTA, the
 531                                                  ** driver needs to reset the changes made to
 532                                                  ** the phb to port mappings in RIORouteRup.
 533                                                  */
 534                                                 if (PortP->SecondBlock) {
 535                                                         u16 dest_unit = HostMapP->ID;
 536                                                         u16 dest_port = port - SysPort;
 537                                                         u16 __iomem *TxPktP;
 538                                                         struct PKT __iomem *Pkt;
 539
 540                                                         for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) {
 541                                                                 /*
 542                                                                  ** *TxPktP is the pointer to the
 543                                                                  ** transmit packet on the host card.
 544                                                                  ** This needs to be translated into
 545                                                                  ** a 32 bit pointer so it can be
 546                                                                  ** accessed from the driver.
 547                                                                  */
 548                                                                 Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP));
 549                                                                 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);
 550                                                                 writew(dest_unit, &Pkt->dest_unit);
 551                                                                 writew(dest_port, &Pkt->dest_port);
 552                                                         }
 553                                                         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);
 554                                                         writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination);
 555                                                 }
 556                                                 rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
 557                                         }
 558                                 }
 559                                 rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n");
 560                                 memset(HostMapP, 0, sizeof(struct Map));
 561                                 work_done++;
 562                         }
 563                 }
 564                 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
 565         }
 566
 567         /* XXXXX lock me up */
 568         for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) {
 569                 if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
 570                         memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map));
 571                         work_done++;
 572                 }
 573                 if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
 574                         memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map));
 575                         work_done++;
 576                 }
 577         }
 578         if (work_done)
 579                 return 0;
 580
 581         rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
 582         p->RIOError.Error = COULDNT_FIND_ENTRY;
 583         return -ENXIO;
 584 }
 585
 586 int RIOAssignRta(struct rio_info *p, struct Map *MapP)
 587 {
 588         int host;
 589         struct Map *HostMapP;
 590         char *sptr;
 591         int link;
 592
 593
 594         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);
 595
 596         if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) {
 597                 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 598                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 599                 return -EINVAL;
 600         }
 601         if (MapP->RtaUniqueNum == 0) {
 602                 rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
 603                 p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
 604                 return -EINVAL;
 605         }
 606         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
 607                 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA);
 608                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 609                 return -EINVAL;
 610         }
 611         if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
 612                 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort);
 613                 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
 614                 return -EINVAL;
 615         }
 616
 617         /*
 618          ** Copy the name across to the map entry.
 619          */
 620         MapP->Name[MAX_NAME_LEN - 1] = '\0';
 621         sptr = MapP->Name;
 622         while (*sptr) {
 623                 if (*sptr < ' ' || *sptr > '~') {
 624                         rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 625                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 626                         return -EINVAL;
 627                 }
 628                 sptr++;
 629         }
 630
 631         for (host = 0; host < p->RIONumHosts; host++) {
 632                 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
 633                         if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
 634                                 p->RIOError.Error = HOST_NOT_RUNNING;
 635                                 return -ENXIO;
 636                         }
 637
 638                         /*
 639                          ** Now we have a host we need to allocate an ID
 640                          ** if the entry does not already have one.
 641                          */
 642                         if (MapP->ID == (u16) - 1) {
 643                                 int nNewID;
 644
 645                                 rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name);
 646                                 /*
 647                                  ** The idea here is to allow RTA's to be assigned
 648                                  ** before they actually appear on the network.
 649                                  ** This allows the addition of RTA's without having
 650                                  ** to plug them in.
 651                                  ** What we do is:
 652                                  **  - Find a free ID and allocate it to the RTA.
 653                                  **  - If this map entry is the second half of a
 654                                  **    16 port entry then find the other half and
 655                                  **    make sure the 2 cross reference each other.
 656                                  */
 657                                 if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) {
 658                                         p->RIOError.Error = COULDNT_FIND_ENTRY;
 659                                         return -EBUSY;
 660                                 }
 661                                 MapP->ID = (u16) nNewID + 1;
 662                                 rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
 663                                 HostMapP = &p->RIOHosts[host].Mapping[nNewID];
 664                                 HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
 665                                 HostMapP->HostUniqueNum = MapP->HostUniqueNum;
 666                                 HostMapP->ID = MapP->ID;
 667                                 for (link = 0; link < LINKS_PER_UNIT; link++) {
 668                                         HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
 669                                         HostMapP->Topology[link].Link = NO_LINK;
 670                                 }
 671                                 if (MapP->Flags & RTA16_SECOND_SLOT) {
 672                                         int unit;
 673
 674                                         for (unit = 0; unit < MAX_RUP; unit++)
 675                                                 if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum)
 676                                                         break;
 677                                         if (unit == MAX_RUP) {
 678                                                 p->RIOError.Error = COULDNT_FIND_ENTRY;
 679                                                 return -EBUSY;
 680                                         }
 681                                         HostMapP->Flags |= RTA16_SECOND_SLOT;
 682                                         HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
 683                                         p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
 684                                         rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID);
 685                                 }
 686                         }
 687
 688                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
 689
 690                         if (HostMapP->Flags & SLOT_IN_USE) {
 691                                 rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
 692                                 p->RIOError.Error = ID_ALREADY_IN_USE;
 693                                 return -EBUSY;
 694                         }
 695
 696                         /*
 697                          ** Assign the sys ports and the name, and mark the slot as
 698                          ** being in use.
 699                          */
 700                         HostMapP->SysPort = MapP->SysPort;
 701                         if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
 702                                 memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
 703                         HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
 704 #ifdef NEED_TO_FIX
 705                         RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]);
 706 #endif
 707                         if (MapP->Flags & RTA16_SECOND_SLOT)
 708                                 HostMapP->Flags |= RTA16_SECOND_SLOT;
 709
 710                         RIOReMapPorts(p, &p->RIOHosts[host], HostMapP);
 711                         /*
 712                          ** Adjust 2nd block of 8 phbs
 713                          */
 714                         if (MapP->Flags & RTA16_SECOND_SLOT)
 715                                 RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);
 716
 717                         if (HostMapP->SysPort != NO_PORT) {
 718                                 if (HostMapP->SysPort < p->RIOFirstPortsBooted)
 719                                         p->RIOFirstPortsBooted = HostMapP->SysPort;
 720                                 if (HostMapP->SysPort > p->RIOLastPortsBooted)
 721                                         p->RIOLastPortsBooted = HostMapP->SysPort;
 722                         }
 723                         if (MapP->Flags & RTA16_SECOND_SLOT)
 724                                 rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
 725                         else
 726                                 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
 727                         return 0;
 728                 }
 729         }
 730         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 731         rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 732         return -ENXIO;
 733 }
 734
 735
 736 int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
 737 {
 738         struct Port *PortP;
 739         unsigned int SubEnt;
 740         unsigned int HostPort;
 741         unsigned int SysPort;
 742         u16 RtaType;
 743         unsigned long flags;
 744
 745         rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID);
 746
 747         /*
 748          ** We need to tell the UnixRups which sysport the rup corresponds to
 749          */
 750         HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort;
 751
 752         if (HostMapP->SysPort == NO_PORT)
 753                 return (0);
 754
 755         RtaType = GetUnitType(HostMapP->RtaUniqueNum);
 756         rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1);
 757
 758         /*
 759          ** now map each of its eight ports
 760          */
 761         for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) {
 762                 rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort);
 763                 SysPort = HostMapP->SysPort + SubEnt;   /* portnumber within system */
 764                 /* portnumber on host */
 765
 766                 HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt;
 767
 768                 rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
 769                 PortP = p->RIOPortp[SysPort];
 770                 rio_dprintk(RIO_DEBUG_TABLE, "Map port\n");
 771
 772                 /*
 773                  ** Point at all the real neat data structures
 774                  */
 775                 rio_spin_lock_irqsave(&PortP->portSem, flags);
 776                 PortP->HostP = HostP;
 777                 PortP->Caddr = HostP->Caddr;
 778
 779                 /*
 780                  ** The PhbP cannot be filled in yet
 781                  ** unless the host has been booted
 782                  */
 783                 if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
 784                         struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
 785                         PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add));
 786                         PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start));
 787                         PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end));
 788                         PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove));
 789                         PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start));
 790                         PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end));
 791                 } else
 792                         PortP->PhbP = NULL;
 793
 794                 /*
 795                  ** port related flags
 796                  */
 797                 PortP->HostPort = HostPort;
 798                 /*
 799                  ** For each part of a 16 port RTA, RupNum is ID - 1.
 800                  */
 801                 PortP->RupNum = HostMapP->ID - 1;
 802                 if (HostMapP->Flags & RTA16_SECOND_SLOT) {
 803                         PortP->ID2 = HostMapP->ID2 - 1;
 804                         PortP->SecondBlock = 1;
 805                 } else {
 806                         PortP->ID2 = 0;
 807                         PortP->SecondBlock = 0;
 808                 }
 809                 PortP->RtaUniqueNum = HostMapP->RtaUniqueNum;
 810
 811                 /*
 812                  ** If the port was already mapped then thats all we need to do.
 813                  */
 814                 if (PortP->Mapped) {
 815                         rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 816                         continue;
 817                 } else
 818                         HostMapP->Flags &= ~RTA_NEWBOOT;
 819
 820                 PortP->State = 0;
 821                 PortP->Config = 0;
 822                 /*
 823                  ** Check out the module type - if it is special (read only etc.)
 824                  ** then we need to set flags in the PortP->Config.
 825                  ** Note: For 16 port RTA, all ports are of the same type.
 826                  */
 827                 if (RtaType == TYPE_RTA16) {
 828                         PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
 829                 } else {
 830                         if (SubEnt < PORTS_PER_MODULE)
 831                                 PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 832                         else
 833                                 PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
 834                 }
 835
 836                 /*
 837                  ** more port related flags
 838                  */
 839                 PortP->PortState = 0;
 840                 PortP->ModemLines = 0;
 841                 PortP->ModemState = 0;
 842                 PortP->CookMode = COOK_WELL;
 843                 PortP->ParamSem = 0;
 844                 PortP->FlushCmdBodge = 0;
 845                 PortP->WflushFlag = 0;
 846                 PortP->MagicFlags = 0;
 847                 PortP->Lock = 0;
 848                 PortP->Store = 0;
 849                 PortP->FirstOpen = 1;
 850
 851                 /*
 852                  ** Buffers 'n things
 853                  */
 854                 PortP->RxDataStart = 0;
 855                 PortP->Cor2Copy = 0;
 856                 PortP->Name = &HostMapP->Name[0];
 857                 PortP->statsGather = 0;
 858                 PortP->txchars = 0;
 859                 PortP->rxchars = 0;
 860                 PortP->opens = 0;
 861                 PortP->closes = 0;
 862                 PortP->ioctls = 0;
 863                 if (PortP->TxRingBuffer)
 864                         memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
 865                 else if (p->RIOBufferSize) {
 866                         PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL);
 867                 }
 868                 PortP->TxBufferOut = 0;
 869                 PortP->TxBufferIn = 0;
 870                 PortP->Debug = 0;
 871                 /*
 872                  ** LastRxTgl stores the state of the rx toggle bit for this
 873                  ** port, to be compared with the state of the next pkt received.
 874                  ** If the same, we have received the same rx pkt from the RTA
 875                  ** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
 876                  */
 877                 PortP->LastRxTgl = ~(u8) PHB_RX_TGL;
 878
 879                 /*
 880                  ** and mark the port as usable
 881                  */
 882                 PortP->Mapped = 1;
 883                 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
 884         }
 885         if (HostMapP->SysPort < p->RIOFirstPortsMapped)
 886                 p->RIOFirstPortsMapped = HostMapP->SysPort;
 887         if (HostMapP->SysPort > p->RIOLastPortsMapped)
 888                 p->RIOLastPortsMapped = HostMapP->SysPort;
 889
 890         return 0;
 891 }
 892
 893 int RIOChangeName(struct rio_info *p, struct Map *MapP)
 894 {
 895         int host;
 896         struct Map *HostMapP;
 897         char *sptr;
 898
 899         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);
 900
 901         if (MapP->ID > MAX_RUP) {
 902                 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
 903                 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
 904                 return -EINVAL;
 905         }
 906
 907         MapP->Name[MAX_NAME_LEN - 1] = '\0';
 908         sptr = MapP->Name;
 909
 910         while (*sptr) {
 911                 if (*sptr < ' ' || *sptr > '~') {
 912                         rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
 913                         p->RIOError.Error = BAD_CHARACTER_IN_NAME;
 914                         return -EINVAL;
 915                 }
 916                 sptr++;
 917         }
 918
 919         for (host = 0; host < p->RIONumHosts; host++) {
 920                 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
 921                         if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
 922                                 p->RIOError.Error = HOST_NOT_RUNNING;
 923                                 return -ENXIO;
 924                         }
 925                         if (MapP->ID == 0) {
 926                                 memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN);
 927                                 return 0;
 928                         }
 929
 930                         HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
 931
 932                         if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) {
 933                                 p->RIOError.Error = RTA_NUMBER_WRONG;
 934                                 return -ENXIO;
 935                         }
 936                         memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
 937                         return 0;
 938                 }
 939         }
 940         p->RIOError.Error = UNKNOWN_HOST_NUMBER;
 941         rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
 942         return -ENXIO;
 943 }