drivers/net/wireless/arlan.h

   1 /*
   2  *  Copyright (C) 1997 Cullen Jennings
   3  *  Copyright (C) 1998 Elmer.Joandi@ut.ee, +37-255-13500
   4  *  GNU General Public License applies
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/kernel.h>
   9 #include <linux/types.h>
  10 #include <linux/skbuff.h>
  11 #include <linux/if_ether.h>     /* For the statistics structure. */
  12 #include <linux/if_arp.h>       /* For ARPHRD_ETHER */
  13 #include <linux/ptrace.h>
  14 #include <linux/ioport.h>
  15 #include <linux/in.h>
  16 #include <linux/slab.h>
  17 #include <linux/string.h>
  18 #include <linux/timer.h>
  19
  20 #include <linux/init.h>
  21 #include <linux/bitops.h>
  22 #include <asm/system.h>
  23 #include <asm/io.h>
  24 #include <linux/errno.h>
  25 #include <linux/delay.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28
  29
  30 //#define ARLAN_DEBUGGING 1
  31
  32 #define ARLAN_PROC_INTERFACE
  33 #define MAX_ARLANS 4 /* not more than 4 ! */
  34 #define ARLAN_PROC_SHM_DUMP /* shows all card registers, makes driver way larger */
  35
  36 #define ARLAN_MAX_MULTICAST_ADDRS 16
  37 #define ARLAN_RCV_CLEAN         0
  38 #define ARLAN_RCV_PROMISC 1
  39 #define ARLAN_RCV_CONTROL 2
  40
  41 #ifdef CONFIG_PROC_FS
  42 extern int init_arlan_proc(void);
  43 extern void cleanup_arlan_proc(void);
  44 #else
  45 #define init_arlan_proc()       ({ 0; })
  46 #define cleanup_arlan_proc()    do { } while (0)
  47 #endif
  48
  49 extern struct net_device *arlan_device[MAX_ARLANS];
  50 extern int      arlan_debug;
  51 extern int      arlan_entry_debug;
  52 extern int      arlan_exit_debug;
  53 extern int      testMemory;
  54 extern int     arlan_command(struct net_device * dev, int command);
  55
  56 #define SIDUNKNOWN -1
  57 #define radioNodeIdUNKNOWN -1
  58 #define irqUNKNOWN 0
  59 #define debugUNKNOWN 0
  60 #define testMemoryUNKNOWN 1
  61 #define spreadingCodeUNKNOWN 0
  62 #define channelNumberUNKNOWN 0
  63 #define channelSetUNKNOWN 0
  64 #define systemIdUNKNOWN -1
  65 #define registrationModeUNKNOWN -1
  66
  67
  68 #define IFDEBUG( L ) if ( (L) & arlan_debug )
  69 #define ARLAN_FAKE_HDR_LEN 12
  70
  71 #ifdef ARLAN_DEBUGGING
  72         #define DEBUG 1
  73         #define ARLAN_ENTRY_EXIT_DEBUGGING 1
  74         #define ARLAN_DEBUG(a,b) printk(KERN_DEBUG a, b)
  75 #else
  76         #define ARLAN_DEBUG(a,b)
  77 #endif
  78
  79 #define ARLAN_SHMEM_SIZE        0x2000
  80
  81 struct arlan_shmem
  82 {
  83       /* Header Signature */
  84       volatile  char textRegion[48];
  85       volatile  u_char resetFlag;
  86       volatile  u_char  diagnosticInfo;
  87       volatile  u_short diagnosticOffset;
  88       volatile  u_char _1[12];
  89       volatile  u_char lanCardNodeId[6];
  90       volatile  u_char broadcastAddress[6];
  91       volatile  u_char hardwareType;
  92       volatile  u_char majorHardwareVersion;
  93       volatile  u_char minorHardwareVersion;
  94       volatile  u_char radioModule;// shows EEPROM, can be overridden at 0x111
  95       volatile  u_char defaultChannelSet; // shows EEProm, can be overriiden at 0x10A
  96       volatile  u_char _2[47];
  97
  98       /* Control/Status Block - 0x0080 */
  99       volatile  u_char interruptInProgress; /* not used by lancpu */
 100       volatile  u_char cntrlRegImage; /* not used by lancpu */
 101       volatile  u_char _3[13];
 102       volatile  u_char dumpByte;
 103       volatile  u_char commandByte; /* non-zero = active */
 104       volatile  u_char commandParameter[15];
 105
 106       /* Receive Status - 0x00a0 */
 107       volatile  u_char rxStatus; /* 1- data, 2-control, 0xff - registr change */
 108       volatile  u_char rxFrmType;
 109       volatile  u_short rxOffset;
 110       volatile  u_short rxLength;
 111       volatile  u_char rxSrc[6];
 112       volatile  u_char rxBroadcastFlag;
 113       volatile  u_char rxQuality;
 114       volatile  u_char scrambled;
 115       volatile  u_char _4[1];
 116
 117       /* Transmit Status - 0x00b0 */
 118       volatile  u_char txStatus;
 119       volatile  u_char txAckQuality;
 120       volatile  u_char numRetries;
 121       volatile  u_char _5[14];
 122       volatile  u_char registeredRouter[6];
 123       volatile  u_char backboneRouter[6];
 124       volatile  u_char registrationStatus;
 125       volatile  u_char configuredStatusFlag;
 126       volatile  u_char _6[1];
 127       volatile  u_char ultimateDestAddress[6];
 128       volatile  u_char immedDestAddress[6];
 129       volatile  u_char immedSrcAddress[6];
 130       volatile  u_short rxSequenceNumber;
 131       volatile  u_char assignedLocaltalkAddress;
 132       volatile  u_char _7[27];
 133
 134       /* System Parameter Block */
 135
 136       /* - Driver Parameters (Novell Specific) */
 137
 138       volatile  u_short txTimeout;
 139       volatile  u_short transportTime;
 140       volatile  u_char _8[4];
 141
 142       /* - Configuration Parameters */
 143       volatile  u_char irqLevel;
 144       volatile  u_char spreadingCode;
 145       volatile  u_char channelSet;
 146       volatile  u_char channelNumber;
 147       volatile  u_short radioNodeId;
 148       volatile  u_char _9[2];
 149       volatile  u_char scramblingDisable;
 150       volatile  u_char radioType;
 151       volatile  u_short routerId;
 152       volatile  u_char _10[9];
 153       volatile  u_char txAttenuation;
 154       volatile  u_char systemId[4];
 155       volatile  u_short globalChecksum;
 156       volatile  u_char _11[4];
 157       volatile  u_short maxDatagramSize;
 158       volatile  u_short maxFrameSize;
 159       volatile  u_char maxRetries;
 160       volatile  u_char receiveMode;
 161       volatile  u_char priority;
 162       volatile  u_char rootOrRepeater;
 163       volatile  u_char specifiedRouter[6];
 164       volatile  u_short fastPollPeriod;
 165       volatile  u_char pollDecay;
 166       volatile  u_char fastPollDelay[2];
 167       volatile  u_char arlThreshold;
 168       volatile  u_char arlDecay;
 169       volatile  u_char _12[1];
 170       volatile  u_short specRouterTimeout;
 171       volatile  u_char _13[5];
 172
 173       /* Scrambled Area */
 174       volatile  u_char SID[4];
 175       volatile  u_char encryptionKey[12];
 176       volatile  u_char _14[2];
 177       volatile  u_char waitTime[2];
 178       volatile  u_char lParameter[2];
 179       volatile  u_char _15[3];
 180       volatile  u_short headerSize;
 181       volatile  u_short sectionChecksum;
 182
 183       volatile  u_char registrationMode;
 184       volatile  u_char registrationFill;
 185       volatile  u_short pollPeriod;
 186       volatile  u_short refreshPeriod;
 187       volatile  u_char name[16];
 188       volatile  u_char NID[6];
 189       volatile  u_char localTalkAddress;
 190       volatile  u_char codeFormat;
 191       volatile  u_char numChannels;
 192       volatile  u_char channel1;
 193       volatile  u_char channel2;
 194       volatile  u_char channel3;
 195       volatile  u_char channel4;
 196       volatile  u_char SSCode[59];
 197
 198       volatile  u_char _16[0xC0];
 199       volatile  u_short auxCmd;
 200       volatile  u_char  dumpPtr[4];
 201       volatile  u_char dumpVal;
 202       volatile  u_char _17[0x6A];
 203       volatile  u_char wireTest;
 204       volatile  u_char _18[14];
 205
 206       /* Statistics Block - 0x0300 */
 207       volatile  u_char hostcpuLock;
 208       volatile  u_char lancpuLock;
 209       volatile  u_char resetTime[18];
 210
 211       volatile  u_char numDatagramsTransmitted[4];
 212       volatile  u_char numReTransmissions[4];
 213       volatile  u_char numFramesDiscarded[4];
 214       volatile  u_char numDatagramsReceived[4];
 215       volatile  u_char numDuplicateReceivedFrames[4];
 216       volatile  u_char numDatagramsDiscarded[4];
 217
 218       volatile  u_short maxNumReTransmitDatagram;
 219       volatile  u_short maxNumReTransmitFrames;
 220       volatile  u_short maxNumConsecutiveDuplicateFrames;
 221       /* misaligned here so we have to go to characters */
 222
 223       volatile  u_char numBytesTransmitted[4];
 224       volatile  u_char numBytesReceived[4];
 225       volatile  u_char numCRCErrors[4];
 226       volatile  u_char numLengthErrors[4];
 227       volatile  u_char numAbortErrors[4];
 228       volatile  u_char numTXUnderruns[4];
 229       volatile  u_char numRXOverruns[4];
 230       volatile  u_char numHoldOffs[4];
 231       volatile  u_char numFramesTransmitted[4];
 232       volatile  u_char numFramesReceived[4];
 233       volatile  u_char numReceiveFramesLost[4];
 234       volatile  u_char numRXBufferOverflows[4];
 235       volatile  u_char numFramesDiscardedAddrMismatch[4];
 236       volatile  u_char numFramesDiscardedSIDMismatch[4];
 237       volatile  u_char numPollsTransmistted[4];
 238       volatile  u_char numPollAcknowledges[4];
 239       volatile  u_char numStatusTimeouts[4];
 240       volatile  u_char numNACKReceived[4];
 241
 242       volatile  u_char _19[0x86];
 243
 244       volatile  u_char txBuffer[0x800];
 245       volatile  u_char rxBuffer[0x800];
 246
 247       volatile  u_char _20[0x800];
 248       volatile  u_char _21[0x3fb];
 249       volatile  u_char configStatus;
 250       volatile  u_char _22;
 251       volatile  u_char progIOCtrl;
 252       volatile  u_char shareMBase;
 253       volatile  u_char controlRegister;
 254 };
 255
 256 struct arlan_conf_stru {
 257       int spreadingCode;
 258       int channelSet;
 259       int channelNumber;
 260       int scramblingDisable;
 261       int txAttenuation;
 262       int systemId;
 263       int maxDatagramSize;
 264       int maxFrameSize;
 265       int maxRetries;
 266       int receiveMode;
 267       int priority;
 268       int rootOrRepeater;
 269       int SID;
 270       int radioNodeId;
 271       int registrationMode;
 272       int registrationFill;
 273       int localTalkAddress;
 274       int codeFormat;
 275       int numChannels;
 276       int channel1;
 277       int channel2;
 278       int channel3;
 279       int channel4;
 280       int txClear;
 281       int txRetries;
 282       int txRouting;
 283       int txScrambled;
 284       int rxParameter;
 285       int txTimeoutMs;
 286       int txAckTimeoutMs;
 287       int waitCardTimeout;
 288       int       waitTime;
 289       int       lParameter;
 290       int       _15;
 291       int       headerSize;
 292       int retries;
 293       int tx_delay_ms;
 294       int waitReTransmitPacketMaxSize;
 295       int ReTransmitPacketMaxSize;
 296       int fastReTransCount;
 297       int driverRetransmissions;
 298       int registrationInterrupts;
 299       int hardwareType;
 300       int radioType;
 301       int writeRadioType;
 302       int writeEEPROM;
 303       char siteName[17];
 304       int measure_rate;
 305       int in_speed;
 306       int out_speed;
 307       int in_speed10;
 308       int out_speed10;
 309       int in_speed_max;
 310       int out_speed_max;
 311       int pre_Command_Wait;
 312       int rx_tweak1;
 313       int rx_tweak2;
 314       int tx_queue_len;
 315 };
 316
 317 extern struct arlan_conf_stru arlan_conf[MAX_ARLANS];
 318
 319 struct TxParam
 320 {
 321       volatile  short           offset;
 322       volatile  short           length;
 323       volatile  u_char          dest[6];
 324       volatile  unsigned        char clear;
 325       volatile  unsigned        char retries;
 326       volatile  unsigned        char routing;
 327       volatile  unsigned        char scrambled;
 328 };
 329
 330 #define TX_RING_SIZE 2
 331 /* Information that need to be kept for each board. */
 332 struct arlan_private {
 333       struct net_device_stats stats;
 334       struct arlan_shmem __iomem * card;
 335       struct arlan_shmem * conf;
 336
 337       struct arlan_conf_stru * Conf;
 338       int       bad;
 339       int       reset;
 340       unsigned long lastReset;
 341       struct timer_list timer;
 342       struct timer_list tx_delay_timer;
 343       struct timer_list tx_retry_timer;
 344       struct timer_list rx_check_timer;
 345
 346       int registrationLostCount;
 347       int reRegisterExp;
 348       int irq_test_done;
 349
 350       struct TxParam txRing[TX_RING_SIZE];
 351       char reTransmitBuff[0x800];
 352       int txLast;
 353       unsigned ReTransmitRequested;
 354       unsigned long tx_done_delayed;
 355       unsigned long registrationLastSeen;
 356
 357       unsigned long     tx_last_sent;
 358       unsigned long     tx_last_cleared;
 359       unsigned long     retransmissions;
 360       unsigned long     interrupt_ack_requested;
 361       spinlock_t        lock;
 362       unsigned long     waiting_command_mask;
 363       unsigned long     card_polling_interval;
 364       unsigned long     last_command_buff_free_time;
 365
 366       int               under_reset;
 367       int               under_config;
 368       int               rx_command_given;
 369       int               tx_command_given;
 370       unsigned  long    interrupt_processing_active;
 371       unsigned long     last_rx_int_ack_time;
 372       unsigned long     in_bytes;
 373       unsigned long     out_bytes;
 374       unsigned long     in_time;
 375       unsigned long     out_time;
 376       unsigned long     in_time10;
 377       unsigned long     out_time10;
 378       unsigned long     in_bytes10;
 379       unsigned long     out_bytes10;
 380       int       init_etherdev_alloc;
 381 };
 382
 383
 384
 385 #define ARLAN_CLEAR             0x00
 386 #define ARLAN_RESET             0x01
 387 #define ARLAN_CHANNEL_ATTENTION 0x02
 388 #define ARLAN_INTERRUPT_ENABLE  0x04
 389 #define ARLAN_CLEAR_INTERRUPT   0x08
 390 #define ARLAN_POWER             0x40
 391 #define ARLAN_ACCESS            0x80
 392
 393 #define ARLAN_COM_CONF                0x01
 394 #define ARLAN_COM_RX_ENABLE           0x03
 395 #define ARLAN_COM_RX_ABORT            0x04
 396 #define ARLAN_COM_TX_ENABLE           0x05
 397 #define ARLAN_COM_TX_ABORT            0x06
 398 #define ARLAN_COM_NOP                 0x07
 399 #define ARLAN_COM_STANDBY             0x08
 400 #define ARLAN_COM_ACTIVATE            0x09
 401 #define ARLAN_COM_GOTO_SLOW_POLL      0x0a
 402 #define ARLAN_COM_INT                 0x80
 403
 404
 405 #define TXLAST(dev) (((struct arlan_private *)netdev_priv(dev))->txRing[((struct arlan_private *)netdev_priv(dev))->txLast])
 406 #define TXHEAD(dev) (((struct arlan_private *)netdev_priv(dev))->txRing[0])
 407 #define TXTAIL(dev) (((struct arlan_private *)netdev_priv(dev))->txRing[1])
 408
 409 #define TXBuffStart(dev) offsetof(struct arlan_shmem, txBuffer)
 410 #define TXBuffEnd(dev) offsetof(struct arlan_shmem, xxBuffer)
 411
 412 #define READSHM(to,from,atype) {\
 413         atype tmp;\
 414         memcpy_fromio(&(tmp),&(from),sizeof(atype));\
 415         to = tmp;\
 416         }
 417
 418 #define READSHMEM(from,atype)\
 419         atype from; \
 420         READSHM(from, arlan->from, atype);
 421
 422 #define WRITESHM(to,from,atype) \
 423         { atype tmpSHM = from;\
 424         memcpy_toio(&(to),&tmpSHM,sizeof(atype));\
 425         }
 426
 427 #define DEBUGSHM(levelSHM,stringSHM,stuff,atype) \
 428         {       atype tmpSHM; \
 429                 memcpy_fromio(&tmpSHM,&(stuff),sizeof(atype));\
 430                 IFDEBUG(levelSHM) printk(stringSHM,tmpSHM);\
 431         }
 432
 433 #define WRITESHMB(to, val) \
 434         writeb(val,&(to))
 435 #define READSHMB(to) \
 436         readb(&(to))
 437 #define WRITESHMS(to, val) \
 438         writew(val,&(to))
 439 #define READSHMS(to) \
 440         readw(&(to))
 441 #define WRITESHMI(to, val) \
 442         writel(val,&(to))
 443 #define READSHMI(to) \
 444         readl(&(to))
 445
 446
 447
 448
 449
 450 #define registrationBad(dev)\
 451    ( (   READSHMB(((struct arlan_private *)netdev_priv(dev))->card->registrationMode)    > 0) && \
 452      (   READSHMB(((struct arlan_private *)netdev_priv(dev))->card->registrationStatus) == 0)    )
 453
 454
 455 #define readControlRegister(dev)\
 456         READSHMB(((struct arlan_private *)netdev_priv(dev))->card->cntrlRegImage)
 457
 458 #define writeControlRegister(dev, v){\
 459    WRITESHMB(((struct arlan_private *)netdev_priv(dev))->card->cntrlRegImage    ,((v) &0xF) );\
 460    WRITESHMB(((struct arlan_private *)netdev_priv(dev))->card->controlRegister  ,(v)    );}
 461
 462
 463 #define arlan_interrupt_lancpu(dev) {\
 464    int cr;   \
 465    \
 466    cr = readControlRegister(dev);\
 467    if (cr & ARLAN_CHANNEL_ATTENTION){ \
 468       writeControlRegister(dev, (cr & ~ARLAN_CHANNEL_ATTENTION));\
 469    }else  \
 470       writeControlRegister(dev, (cr | ARLAN_CHANNEL_ATTENTION));\
 471 }
 472
 473 #define clearChannelAttention(dev){ \
 474    writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_CHANNEL_ATTENTION);}
 475 #define setHardwareReset(dev) {\
 476    writeControlRegister(dev,readControlRegister(dev) | ARLAN_RESET);}
 477 #define clearHardwareReset(dev) {\
 478    writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_RESET);}
 479 #define setInterruptEnable(dev){\
 480    writeControlRegister(dev,readControlRegister(dev) | ARLAN_INTERRUPT_ENABLE)  ;}
 481 #define clearInterruptEnable(dev){\
 482    writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_INTERRUPT_ENABLE)  ;}
 483 #define setClearInterrupt(dev){\
 484    writeControlRegister(dev,readControlRegister(dev) | ARLAN_CLEAR_INTERRUPT)   ;}
 485 #define clearClearInterrupt(dev){\
 486    writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_CLEAR_INTERRUPT);}
 487 #define setPowerOff(dev){\
 488    writeControlRegister(dev,readControlRegister(dev) | (ARLAN_POWER && ARLAN_ACCESS));\
 489    writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_ACCESS);}
 490 #define setPowerOn(dev){\
 491    writeControlRegister(dev,readControlRegister(dev) & ~(ARLAN_POWER));   }
 492 #define arlan_lock_card_access(dev){\
 493    writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_ACCESS);}
 494 #define arlan_unlock_card_access(dev){\
 495    writeControlRegister(dev,readControlRegister(dev) | ARLAN_ACCESS ); }
 496
 497
 498
 499
 500 #define ARLAN_COMMAND_RX                0x000001
 501 #define ARLAN_COMMAND_NOOP              0x000002
 502 #define ARLAN_COMMAND_NOOPINT           0x000004
 503 #define ARLAN_COMMAND_TX                0x000008
 504 #define ARLAN_COMMAND_CONF              0x000010
 505 #define ARLAN_COMMAND_RESET             0x000020
 506 #define ARLAN_COMMAND_TX_ABORT          0x000040
 507 #define ARLAN_COMMAND_RX_ABORT          0x000080
 508 #define ARLAN_COMMAND_POWERDOWN         0x000100
 509 #define ARLAN_COMMAND_POWERUP           0x000200
 510 #define ARLAN_COMMAND_SLOW_POLL         0x000400
 511 #define ARLAN_COMMAND_ACTIVATE          0x000800
 512 #define ARLAN_COMMAND_INT_ACK           0x001000
 513 #define ARLAN_COMMAND_INT_ENABLE        0x002000
 514 #define ARLAN_COMMAND_WAIT_NOW          0x004000
 515 #define ARLAN_COMMAND_LONG_WAIT_NOW     0x008000
 516 #define ARLAN_COMMAND_STANDBY           0x010000
 517 #define ARLAN_COMMAND_INT_RACK          0x020000
 518 #define ARLAN_COMMAND_INT_RENABLE       0x040000
 519 #define ARLAN_COMMAND_CONF_WAIT         0x080000
 520 #define ARLAN_COMMAND_TBUSY_CLEAR       0x100000
 521 #define ARLAN_COMMAND_CLEAN_AND_CONF    (ARLAN_COMMAND_TX_ABORT\
 522                                         | ARLAN_COMMAND_RX_ABORT\
 523                                         | ARLAN_COMMAND_CONF)
 524 #define ARLAN_COMMAND_CLEAN_AND_RESET   (ARLAN_COMMAND_TX_ABORT\
 525                                         | ARLAN_COMMAND_RX_ABORT\
 526                                         | ARLAN_COMMAND_RESET)
 527
 528
 529
 530 #define ARLAN_DEBUG_CHAIN_LOCKS         0x00001
 531 #define ARLAN_DEBUG_RESET               0x00002
 532 #define ARLAN_DEBUG_TIMING              0x00004
 533 #define ARLAN_DEBUG_CARD_STATE          0x00008
 534 #define ARLAN_DEBUG_TX_CHAIN            0x00010
 535 #define ARLAN_DEBUG_MULTICAST           0x00020
 536 #define ARLAN_DEBUG_HEADER_DUMP         0x00040
 537 #define ARLAN_DEBUG_INTERRUPT           0x00080
 538 #define ARLAN_DEBUG_STARTUP             0x00100
 539 #define ARLAN_DEBUG_SHUTDOWN            0x00200
 540