drivers/net/rrunner.h

   1 #ifndef _RRUNNER_H_
   2 #define _RRUNNER_H_
   3
   4 #include <linux/interrupt.h>
   5
   6 #if ((BITS_PER_LONG != 32) && (BITS_PER_LONG != 64))
   7 #error "BITS_PER_LONG not defined or not valid"
   8 #endif
   9
  10
  11 struct rr_regs {
  12
  13         u32     pad0[16];
  14
  15         u32     HostCtrl;
  16         u32     LocalCtrl;
  17         u32     Pc;
  18         u32     BrkPt;
  19
  20 /* Timer increments every 0.97 micro-seconds (unsigned int) */
  21         u32     Timer_Hi;
  22         u32     Timer;
  23         u32     TimerRef;
  24         u32     PciState;
  25
  26         u32     Event;
  27         u32     MbEvent;
  28
  29         u32     WinBase;
  30         u32     WinData;
  31         u32     RX_state;
  32         u32     TX_state;
  33
  34         u32     Overhead;
  35         u32     ExtIo;
  36
  37         u32     DmaWriteHostHi;
  38         u32     DmaWriteHostLo;
  39
  40         u32     pad1[2];
  41
  42         u32     DmaReadHostHi;
  43         u32     DmaReadHostLo;
  44
  45         u32     pad2;
  46
  47         u32     DmaReadLen;
  48         u32     DmaWriteState;
  49
  50         u32     DmaWriteLcl;
  51         u32     DmaWriteIPchecksum;
  52         u32     DmaWriteLen;
  53         u32     DmaReadState;
  54         u32     DmaReadLcl;
  55         u32     DmaReadIPchecksum;
  56         u32     pad3;
  57
  58         u32     RxBase;
  59         u32     RxPrd;
  60         u32     RxCon;
  61
  62         u32     pad4;
  63
  64         u32     TxBase;
  65         u32     TxPrd;
  66         u32     TxCon;
  67
  68         u32     pad5;
  69
  70         u32     RxIndPro;
  71         u32     RxIndCon;
  72         u32     RxIndRef;
  73
  74         u32     pad6;
  75
  76         u32     TxIndPro;
  77         u32     TxIndCon;
  78         u32     TxIndRef;
  79
  80         u32     pad7[17];
  81
  82         u32     DrCmndPro;
  83         u32     DrCmndCon;
  84         u32     DrCmndRef;
  85
  86         u32     pad8;
  87
  88         u32     DwCmndPro;
  89         u32     DwCmndCon;
  90         u32     DwCmndRef;
  91
  92         u32     AssistState;
  93
  94         u32     DrDataPro;
  95         u32     DrDataCon;
  96         u32     DrDataRef;
  97
  98         u32     pad9;
  99
 100         u32     DwDataPro;
 101         u32     DwDataCon;
 102         u32     DwDataRef;
 103
 104         u32     pad10[33];
 105
 106         u32     EvtCon;
 107
 108         u32     pad11[5];
 109
 110         u32     TxPi;
 111         u32     IpRxPi;
 112
 113         u32     pad11a[8];
 114
 115         u32     CmdRing[16];
 116
 117 /* The ULA is in two registers the high order two bytes of the first
 118  * word contain the RunCode features.
 119  * ula0         res     res     byte0   byte1
 120  * ula1         byte2   byte3   byte4   byte5
 121  */
 122         u32     Ula0;
 123         u32     Ula1;
 124
 125         u32     RxRingHi;
 126         u32     RxRingLo;
 127
 128         u32     InfoPtrHi;
 129         u32     InfoPtrLo;
 130
 131         u32     Mode;
 132
 133         u32     ConRetry;
 134         u32     ConRetryTmr;
 135
 136         u32     ConTmout;
 137         u32     CtatTmr;
 138
 139         u32     MaxRxRng;
 140
 141         u32     IntrTmr;
 142         u32     TxDataMvTimeout;
 143         u32     RxDataMvTimeout;
 144
 145         u32     EvtPrd;
 146         u32     TraceIdx;
 147
 148         u32     Fail1;
 149         u32     Fail2;
 150
 151         u32     DrvPrm;
 152
 153         u32     FilterLA;
 154
 155         u32     FwRev;
 156         u32     FwRes1;
 157         u32     FwRes2;
 158         u32     FwRes3;
 159
 160         u32     WriteDmaThresh;
 161         u32     ReadDmaThresh;
 162
 163         u32     pad12[325];
 164         u32     Window[512];
 165 };
 166
 167 /*
 168  * Host control register bits.
 169  */
 170
 171 #define RR_INT          0x01
 172 #define RR_CLEAR_INT    0x02
 173 #define NO_SWAP         0x04000004
 174 #define NO_SWAP1        0x00000004
 175 #define PCI_RESET_NIC   0x08
 176 #define HALT_NIC        0x10
 177 #define SSTEP_NIC       0x20
 178 #define MEM_READ_MULTI  0x40
 179 #define NIC_HALTED      0x100
 180 #define HALT_INST       0x200
 181 #define PARITY_ERR      0x400
 182 #define INVALID_INST_B  0x800
 183 #define RR_REV_2        0x20000000
 184 #define RR_REV_MASK     0xf0000000
 185
 186 /*
 187  * Local control register bits.
 188  */
 189
 190 #define INTA_STATE              0x01
 191 #define CLEAR_INTA              0x02
 192 #define FAST_EEPROM_ACCESS      0x08
 193 #define ENABLE_EXTRA_SRAM       0x100
 194 #define ENABLE_EXTRA_DESC       0x200
 195 #define ENABLE_PARITY           0x400
 196 #define FORCE_DMA_PARITY_ERROR  0x800
 197 #define ENABLE_EEPROM_WRITE     0x1000
 198 #define ENABLE_DATA_CACHE       0x2000
 199 #define SRAM_LO_PARITY_ERR      0x4000
 200 #define SRAM_HI_PARITY_ERR      0x8000
 201
 202 /*
 203  * PCI state bits.
 204  */
 205
 206 #define FORCE_PCI_RESET         0x01
 207 #define PROVIDE_LENGTH          0x02
 208 #define MASK_DMA_READ_MAX       0x1C
 209 #define RBURST_DISABLE          0x00
 210 #define RBURST_4                0x04
 211 #define RBURST_16               0x08
 212 #define RBURST_32               0x0C
 213 #define RBURST_64               0x10
 214 #define RBURST_128              0x14
 215 #define RBURST_256              0x18
 216 #define RBURST_1024             0x1C
 217 #define MASK_DMA_WRITE_MAX      0xE0
 218 #define WBURST_DISABLE          0x00
 219 #define WBURST_4                0x20
 220 #define WBURST_16               0x40
 221 #define WBURST_32               0x60
 222 #define WBURST_64               0x80
 223 #define WBURST_128              0xa0
 224 #define WBURST_256              0xc0
 225 #define WBURST_1024             0xe0
 226 #define MASK_MIN_DMA            0xFF00
 227 #define FIFO_RETRY_ENABLE       0x10000
 228
 229 /*
 230  * Event register
 231  */
 232
 233 #define DMA_WRITE_DONE          0x10000
 234 #define DMA_READ_DONE           0x20000
 235 #define DMA_WRITE_ERR           0x40000
 236 #define DMA_READ_ERR            0x80000
 237
 238 /*
 239  * Receive state
 240  *
 241  * RoadRunner HIPPI Receive State Register controls and monitors the
 242  * HIPPI receive interface in the NIC. Look at err bits when a HIPPI
 243  * receive Error Event occurs.
 244  */
 245
 246 #define ENABLE_NEW_CON          0x01
 247 #define RESET_RECV              0x02
 248 #define RECV_ALL                0x00
 249 #define RECV_1K                 0x20
 250 #define RECV_2K                 0x40
 251 #define RECV_4K                 0x60
 252 #define RECV_8K                 0x80
 253 #define RECV_16K                0xa0
 254 #define RECV_32K                0xc0
 255 #define RECV_64K                0xe0
 256
 257 /*
 258  * Transmit status.
 259  */
 260
 261 #define ENA_XMIT                0x01
 262 #define PERM_CON                0x02
 263
 264 /*
 265  * DMA write state
 266  */
 267
 268 #define RESET_DMA               0x01
 269 #define NO_SWAP_DMA             0x02
 270 #define DMA_ACTIVE              0x04
 271 #define THRESH_MASK             0x1F
 272 #define DMA_ERROR_MASK          0xff000000
 273
 274 /*
 275  * Gooddies stored in the ULA registers.
 276  */
 277
 278 #define TRACE_ON_WHAT_BIT       0x00020000    /* Traces on */
 279 #define ONEM_BUF_WHAT_BIT       0x00040000    /* 1Meg vs 256K */
 280 #define CHAR_API_WHAT_BIT       0x00080000    /* Char API vs network only */
 281 #define CMD_EVT_WHAT_BIT        0x00200000    /* Command event */
 282 #define LONG_TX_WHAT_BIT        0x00400000
 283 #define LONG_RX_WHAT_BIT        0x00800000
 284 #define WHAT_BIT_MASK           0xFFFD0000    /* Feature bit mask */
 285
 286 /*
 287  * Mode status
 288  */
 289
 290 #define EVENT_OVFL              0x80000000
 291 #define FATAL_ERR               0x40000000
 292 #define LOOP_BACK               0x01
 293 #define MODE_PH                 0x02
 294 #define MODE_FP                 0x00
 295 #define PTR64BIT                0x04
 296 #define PTR32BIT                0x00
 297 #define PTR_WD_SWAP             0x08
 298 #define PTR_WD_NOSWAP           0x00
 299 #define POST_WARN_EVENT         0x10
 300 #define ERR_TERM                0x20
 301 #define DIRECT_CONN             0x40
 302 #define NO_NIC_WATCHDOG         0x80
 303 #define SWAP_DATA               0x100
 304 #define SWAP_CONTROL            0x200
 305 #define NIC_HALT_ON_ERR         0x400
 306 #define NIC_NO_RESTART          0x800
 307 #define HALF_DUP_TX             0x1000
 308 #define HALF_DUP_RX             0x2000
 309
 310
 311 /*
 312  * Error codes
 313  */
 314
 315 /* Host Error Codes - values of fail1 */
 316 #define ERR_UNKNOWN_MBOX        0x1001
 317 #define ERR_UNKNOWN_CMD         0x1002
 318 #define ERR_MAX_RING            0x1003
 319 #define ERR_RING_CLOSED         0x1004
 320 #define ERR_RING_OPEN           0x1005
 321 /* Firmware internal errors */
 322 #define ERR_EVENT_RING_FULL     0x01
 323 #define ERR_DW_PEND_CMND_FULL   0x02
 324 #define ERR_DR_PEND_CMND_FULL   0x03
 325 #define ERR_DW_PEND_DATA_FULL   0x04
 326 #define ERR_DR_PEND_DATA_FULL   0x05
 327 #define ERR_ILLEGAL_JUMP        0x06
 328 #define ERR_UNIMPLEMENTED       0x07
 329 #define ERR_TX_INFO_FULL        0x08
 330 #define ERR_RX_INFO_FULL        0x09
 331 #define ERR_ILLEGAL_MODE        0x0A
 332 #define ERR_MAIN_TIMEOUT        0x0B
 333 #define ERR_EVENT_BITS          0x0C
 334 #define ERR_UNPEND_FULL         0x0D
 335 #define ERR_TIMER_QUEUE_FULL    0x0E
 336 #define ERR_TIMER_QUEUE_EMPTY   0x0F
 337 #define ERR_TIMER_NO_FREE       0x10
 338 #define ERR_INTR_START          0x11
 339 #define ERR_BAD_STARTUP         0x12
 340 #define ERR_NO_PKT_END          0x13
 341 #define ERR_HALTED_ON_ERR       0x14
 342 /* Hardware NIC Errors */
 343 #define ERR_WRITE_DMA           0x0101
 344 #define ERR_READ_DMA            0x0102
 345 #define ERR_EXT_SERIAL          0x0103
 346 #define ERR_TX_INT_PARITY       0x0104
 347
 348
 349 /*
 350  * Event definitions
 351  */
 352
 353 #define EVT_RING_ENTRIES        64
 354 #define EVT_RING_SIZE           (EVT_RING_ENTRIES * sizeof(struct event))
 355
 356 struct event {
 357 #ifdef __LITTLE_ENDIAN
 358         u16     index;
 359         u8      ring;
 360         u8      code;
 361 #else
 362         u8      code;
 363         u8      ring;
 364         u16     index;
 365 #endif
 366         u32     timestamp;
 367 };
 368
 369 /*
 370  * General Events
 371  */
 372
 373 #define E_NIC_UP        0x01
 374 #define E_WATCHDOG      0x02
 375
 376 #define E_STAT_UPD      0x04
 377 #define E_INVAL_CMD     0x05
 378 #define E_SET_CMD_CONS  0x06
 379 #define E_LINK_ON       0x07
 380 #define E_LINK_OFF      0x08
 381 #define E_INTERN_ERR    0x09
 382 #define E_HOST_ERR      0x0A
 383 #define E_STATS_UPDATE  0x0B
 384 #define E_REJECTING     0x0C
 385
 386 /*
 387  * Send  Events
 388  */
 389 #define E_CON_REJ       0x13
 390 #define E_CON_TMOUT     0x14
 391 #define E_CON_NC_TMOUT  0x15    /* I  , Connection No Campon Timeout */
 392 #define E_DISC_ERR      0x16
 393 #define E_INT_PRTY      0x17
 394 #define E_TX_IDLE       0x18
 395 #define E_TX_LINK_DROP  0x19
 396 #define E_TX_INV_RNG    0x1A
 397 #define E_TX_INV_BUF    0x1B
 398 #define E_TX_INV_DSC    0x1C
 399
 400 /*
 401  * Destination Events
 402  */
 403 /*
 404  * General Receive events
 405  */
 406 #define E_VAL_RNG       0x20
 407 #define E_RX_RNG_ENER   0x21
 408 #define E_INV_RNG       0x22
 409 #define E_RX_RNG_SPC    0x23
 410 #define E_RX_RNG_OUT    0x24
 411 #define E_PKT_DISCARD   0x25
 412 #define E_INFO_EVT      0x27
 413
 414 /*
 415  * Data corrupted events
 416  */
 417 #define E_RX_PAR_ERR    0x2B
 418 #define E_RX_LLRC_ERR   0x2C
 419 #define E_IP_CKSM_ERR   0x2D
 420 #define E_DTA_CKSM_ERR  0x2E
 421 #define E_SHT_BST       0x2F
 422
 423 /*
 424  * Data lost events
 425  */
 426 #define E_LST_LNK_ERR   0x30
 427 #define E_FLG_SYN_ERR   0x31
 428 #define E_FRM_ERR       0x32
 429 #define E_RX_IDLE       0x33
 430 #define E_PKT_LN_ERR    0x34
 431 #define E_STATE_ERR     0x35
 432 #define E_UNEXP_DATA    0x3C
 433
 434 /*
 435  * Fatal events
 436  */
 437 #define E_RX_INV_BUF    0x36
 438 #define E_RX_INV_DSC    0x37
 439 #define E_RNG_BLK       0x38
 440
 441 /*
 442  * Warning events
 443  */
 444 #define E_RX_TO         0x39
 445 #define E_BFR_SPC       0x3A
 446 #define E_INV_ULP       0x3B
 447
 448 #define E_NOT_IMPLEMENTED 0x40
 449
 450
 451 /*
 452  * Commands
 453  */
 454
 455 #define CMD_RING_ENTRIES        16
 456
 457 struct cmd {
 458 #ifdef __LITTLE_ENDIAN
 459         u16     index;
 460         u8      ring;
 461         u8      code;
 462 #else
 463         u8      code;
 464         u8      ring;
 465         u16     index;
 466 #endif
 467 };
 468
 469 #define C_START_FW      0x01
 470 #define C_UPD_STAT      0x02
 471 #define C_WATCHDOG      0x05
 472 #define C_DEL_RNG       0x09
 473 #define C_NEW_RNG       0x0A
 474 #define C_CONN          0x0D
 475
 476
 477 /*
 478  * Mode bits
 479  */
 480
 481 #define  PACKET_BAD             0x01 /* Packet had link-layer error */
 482 #define  INTERRUPT              0x02
 483 #define  TX_IP_CKSUM            0x04
 484 #define  PACKET_END             0x08
 485 #define  PACKET_START           0x10
 486 #define  SAME_IFIELD            0x80
 487
 488
 489 typedef struct {
 490 #if (BITS_PER_LONG == 64)
 491         u64 addrlo;
 492 #else
 493         u32 addrhi;
 494         u32 addrlo;
 495 #endif
 496 } rraddr;
 497
 498
 499 static inline void set_rraddr(rraddr *ra, dma_addr_t addr)
 500 {
 501         unsigned long baddr = addr;
 502 #if (BITS_PER_LONG == 64)
 503         ra->addrlo = baddr;
 504 #else
 505     /* Don't bother setting zero every time */
 506         ra->addrlo = baddr;
 507 #endif
 508         mb();
 509 }
 510
 511
 512 static inline void set_rxaddr(struct rr_regs __iomem *regs, volatile dma_addr_t addr)
 513 {
 514         unsigned long baddr = addr;
 515 #if (BITS_PER_LONG == 64) && defined(__LITTLE_ENDIAN)
 516         writel(baddr & 0xffffffff, &regs->RxRingHi);
 517         writel(baddr >> 32, &regs->RxRingLo);
 518 #elif (BITS_PER_LONG == 64)
 519         writel(baddr >> 32, &regs->RxRingHi);
 520         writel(baddr & 0xffffffff, &regs->RxRingLo);
 521 #else
 522         writel(0, &regs->RxRingHi);
 523         writel(baddr, &regs->RxRingLo);
 524 #endif
 525         mb();
 526 }
 527
 528
 529 static inline void set_infoaddr(struct rr_regs __iomem *regs, volatile dma_addr_t addr)
 530 {
 531         unsigned long baddr = addr;
 532 #if (BITS_PER_LONG == 64) && defined(__LITTLE_ENDIAN)
 533         writel(baddr & 0xffffffff, &regs->InfoPtrHi);
 534         writel(baddr >> 32, &regs->InfoPtrLo);
 535 #elif (BITS_PER_LONG == 64)
 536         writel(baddr >> 32, &regs->InfoPtrHi);
 537         writel(baddr & 0xffffffff, &regs->InfoPtrLo);
 538 #else
 539         writel(0, &regs->InfoPtrHi);
 540         writel(baddr, &regs->InfoPtrLo);
 541 #endif
 542         mb();
 543 }
 544
 545
 546 /*
 547  * TX ring
 548  */
 549
 550 #ifdef CONFIG_ROADRUNNER_LARGE_RINGS
 551 #define TX_RING_ENTRIES 32
 552 #else
 553 #define TX_RING_ENTRIES 16
 554 #endif
 555 #define TX_TOTAL_SIZE   (TX_RING_ENTRIES * sizeof(struct tx_desc))
 556
 557 struct tx_desc{
 558         rraddr  addr;
 559         u32     res;
 560 #ifdef __LITTLE_ENDIAN
 561         u16     size;
 562         u8      pad;
 563         u8      mode;
 564 #else
 565         u8      mode;
 566         u8      pad;
 567         u16     size;
 568 #endif
 569 };
 570
 571
 572 #ifdef CONFIG_ROADRUNNER_LARGE_RINGS
 573 #define RX_RING_ENTRIES 32
 574 #else
 575 #define RX_RING_ENTRIES 16
 576 #endif
 577 #define RX_TOTAL_SIZE   (RX_RING_ENTRIES * sizeof(struct rx_desc))
 578
 579 struct rx_desc{
 580         rraddr  addr;
 581         u32     res;
 582 #ifdef __LITTLE_ENDIAN
 583         u16     size;
 584         u8      pad;
 585         u8      mode;
 586 #else
 587         u8      mode;
 588         u8      pad;
 589         u16     size;
 590 #endif
 591 };
 592
 593
 594 /*
 595  * ioctl's
 596  */
 597
 598 #define SIOCRRPFW       SIOCDEVPRIVATE          /* put firmware */
 599 #define SIOCRRGFW       SIOCDEVPRIVATE+1        /* get firmware */
 600 #define SIOCRRID        SIOCDEVPRIVATE+2        /* identify */
 601
 602
 603 struct seg_hdr {
 604         u32     seg_start;
 605         u32     seg_len;
 606         u32     seg_eestart;
 607 };
 608
 609
 610 #define EEPROM_BASE 0x80000000
 611 #define EEPROM_WORDS 8192
 612 #define EEPROM_BYTES (EEPROM_WORDS * sizeof(u32))
 613
 614 struct eeprom_boot {
 615         u32     key1;
 616         u32     key2;
 617         u32     sram_size;
 618         struct  seg_hdr loader;
 619         u32     init_chksum;
 620         u32     reserved1;
 621 };
 622
 623 struct eeprom_manf {
 624         u32     HeaderFmt;
 625         u32     Firmware;
 626         u32     BoardRevision;
 627         u32     RoadrunnerRev;
 628         char    OpticsPart[8];
 629         u32     OpticsRev;
 630         u32     pad1;
 631         char    SramPart[8];
 632         u32     SramRev;
 633         u32     pad2;
 634         char    EepromPart[8];
 635         u32     EepromRev;
 636         u32     EepromSize;
 637         char    PalPart[8];
 638         u32     PalRev;
 639         u32     pad3;
 640         char    PalCodeFile[12];
 641         u32     PalCodeRev;
 642         char    BoardULA[8];
 643         char    SerialNo[8];
 644         char    MfgDate[8];
 645         char    MfgTime[8];
 646         char    ModifyDate[8];
 647         u32     ModCount;
 648         u32     pad4[13];
 649 };
 650
 651
 652 struct eeprom_phase_info {
 653         char    phase1File[12];
 654         u32     phase1Rev;
 655         char    phase1Date[8];
 656         char    phase2File[12];
 657         u32     phase2Rev;
 658         char    phase2Date[8];
 659         u32     reserved7[4];
 660 };
 661
 662 struct eeprom_rncd_info {
 663         u32     FwStart;
 664         u32     FwRev;
 665         char    FwDate[8];
 666         u32     AddrRunCodeSegs;
 667         u32     FileNames;
 668         char    File[13][8];
 669 };
 670
 671
 672 /* Phase 1 region (starts are word offset 0x80) */
 673 struct phase1_hdr{
 674         u32     jump;
 675         u32     noop;
 676         struct seg_hdr phase2Seg;
 677 };
 678
 679 struct eeprom {
 680         struct eeprom_boot      boot;
 681         u32                     pad1[8];
 682         struct eeprom_manf      manf;
 683         struct eeprom_phase_info phase_info;
 684         struct eeprom_rncd_info rncd_info;
 685         u32                     pad2[15];
 686         u32                     hdr_checksum;
 687         struct phase1_hdr       phase1;
 688 };
 689
 690
 691 struct rr_stats {
 692         u32     NicTimeStamp;
 693         u32     RngCreated;
 694         u32     RngDeleted;
 695         u32     IntrGen;
 696         u32     NEvtOvfl;
 697         u32     InvCmd;
 698         u32     DmaReadErrs;
 699         u32     DmaWriteErrs;
 700         u32     StatUpdtT;
 701         u32     StatUpdtC;
 702         u32     WatchDog;
 703         u32     Trace;
 704
 705         /* Serial HIPPI */
 706         u32     LnkRdyEst;
 707         u32     GLinkErr;
 708         u32     AltFlgErr;
 709         u32     OvhdBit8Sync;
 710         u32     RmtSerPrtyErr;
 711         u32     RmtParPrtyErr;
 712         u32     RmtLoopBk;
 713         u32     pad1;
 714
 715         /* HIPPI tx */
 716         u32     ConEst;
 717         u32     ConRejS;
 718         u32     ConRetry;
 719         u32     ConTmOut;
 720         u32     SndConDiscon;
 721         u32     SndParErr;
 722         u32     PktSnt;
 723         u32     pad2[2];
 724         u32     ShFBstSnt;
 725         u64     BytSent;
 726         u32     TxTimeout;
 727         u32     pad3[3];
 728
 729         /* HIPPI rx */
 730         u32     ConAcc;
 731         u32     ConRejdiPrty;
 732         u32     ConRejd64b;
 733         u32     ConRejdBuf;
 734         u32     RxConDiscon;
 735         u32     RxConNoData;
 736         u32     PktRx;
 737         u32     pad4[2];
 738         u32     ShFBstRx;
 739         u64     BytRx;
 740         u32     RxParErr;
 741         u32     RxLLRCerr;
 742         u32     RxBstSZerr;
 743         u32     RxStateErr;
 744         u32     RxRdyErr;
 745         u32     RxInvULP;
 746         u32     RxSpcBuf;
 747         u32     RxSpcDesc;
 748         u32     RxRngSpc;
 749         u32     RxRngFull;
 750         u32     RxPktLenErr;
 751         u32     RxCksmErr;
 752         u32     RxPktDrp;
 753         u32     RngLowSpc;
 754         u32     RngDataClose;
 755         u32     RxTimeout;
 756         u32     RxIdle;
 757 };
 758
 759
 760 /*
 761  * This struct is shared with the NIC firmware.
 762  */
 763 struct ring_ctrl {
 764         rraddr  rngptr;
 765 #ifdef __LITTLE_ENDIAN
 766         u16     entries;
 767         u8      pad;
 768         u8      entry_size;
 769         u16     pi;
 770         u16     mode;
 771 #else
 772         u8      entry_size;
 773         u8      pad;
 774         u16     entries;
 775         u16     mode;
 776         u16     pi;
 777 #endif
 778 };
 779
 780 struct rr_info {
 781         union {
 782                 struct rr_stats stats;
 783                 u32 stati[128];
 784         } s;
 785         struct ring_ctrl        evt_ctrl;
 786         struct ring_ctrl        cmd_ctrl;
 787         struct ring_ctrl        tx_ctrl;
 788         u8                      pad[464];
 789         u8                      trace[3072];
 790 };
 791
 792 /*
 793  * The linux structure for the RoadRunner.
 794  *
 795  * RX/TX descriptors are put first to make sure they are properly
 796  * aligned and do not cross cache-line boundaries.
 797  */
 798
 799 struct rr_private
 800 {
 801         struct rx_desc          *rx_ring;
 802         struct tx_desc          *tx_ring;
 803         struct event            *evt_ring;
 804         dma_addr_t              tx_ring_dma;
 805         dma_addr_t              rx_ring_dma;
 806         dma_addr_t              evt_ring_dma;
 807         /* Alignment ok ? */
 808         struct sk_buff          *rx_skbuff[RX_RING_ENTRIES];
 809         struct sk_buff          *tx_skbuff[TX_RING_ENTRIES];
 810         struct rr_regs          __iomem *regs;          /* Register base */
 811         struct ring_ctrl        *rx_ctrl;       /* Receive ring control */
 812         struct rr_info          *info;          /* Shared info page */
 813         dma_addr_t              rx_ctrl_dma;
 814         dma_addr_t              info_dma;
 815         spinlock_t              lock;
 816         struct timer_list       timer;
 817         u32                     cur_rx, cur_cmd, cur_evt;
 818         u32                     dirty_rx, dirty_tx;
 819         u32                     tx_full;
 820         u32                     fw_rev;
 821         volatile short          fw_running;
 822         struct net_device_stats stats;
 823         struct pci_dev          *pci_dev;
 824 };
 825
 826
 827 /*
 828  * Prototypes
 829  */
 830 static int rr_init(struct net_device *dev);
 831 static int rr_init1(struct net_device *dev);
 832 static irqreturn_t rr_interrupt(int irq, void *dev_id);
 833
 834 static int rr_open(struct net_device *dev);
 835 static int rr_start_xmit(struct sk_buff *skb, struct net_device *dev);
 836 static int rr_close(struct net_device *dev);
 837 static struct net_device_stats *rr_get_stats(struct net_device *dev);
 838 static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 839 static unsigned int rr_read_eeprom(struct rr_private *rrpriv,
 840                                    unsigned long offset,
 841                                    unsigned char *buf,
 842                                    unsigned long length);
 843 static u32 rr_read_eeprom_word(struct rr_private *rrpriv, void * offset);
 844 static int rr_load_firmware(struct net_device *dev);
 845 static inline void rr_raz_tx(struct rr_private *, struct net_device *);
 846 static inline void rr_raz_rx(struct rr_private *, struct net_device *);
 847 #endif /* _RRUNNER_H_ */