Merge branch 'linux-2.6'
[linux-2.6] / drivers / net / wan / lmc / lmc_var.h
1 #ifndef _LMC_VAR_H_
2 #define _LMC_VAR_H_
3
4 /* $Id: lmc_var.h,v 1.17 2000/04/06 12:16:47 asj Exp $ */
5
6  /*
7   * Copyright (c) 1997-2000 LAN Media Corporation (LMC)
8   * All rights reserved.  www.lanmedia.com
9   *
10   * This code is written by:
11   * Andrew Stanley-Jones (asj@cban.com)
12   * Rob Braun (bbraun@vix.com),
13   * Michael Graff (explorer@vix.com) and
14   * Matt Thomas (matt@3am-software.com).
15   *
16   * This software may be used and distributed according to the terms
17   * of the GNU General Public License version 2, incorporated herein by reference.
18   */
19
20 #include <linux/timer.h>
21
22 #ifndef __KERNEL__
23 typedef signed char s8;
24 typedef unsigned char u8;
25
26 typedef signed short s16;
27 typedef unsigned short u16;
28
29 typedef signed int s32;
30 typedef unsigned int u32;
31
32 typedef signed long long s64;
33 typedef unsigned long long u64;
34
35 #define BITS_PER_LONG 32 
36
37 #endif
38
39 /*
40  * basic definitions used in lmc include files
41  */
42
43 typedef struct lmc___softc lmc_softc_t;
44 typedef struct lmc___media lmc_media_t;
45 typedef struct lmc___ctl lmc_ctl_t;
46
47 #define lmc_csrptr_t    unsigned long
48 #define u_int16_t       u16
49 #define u_int8_t        u8
50 #define tulip_uint32_t  u32
51
52 #define LMC_REG_RANGE 0x80
53
54 #define LMC_PRINTF_FMT  "%s"
55 #define LMC_PRINTF_ARGS (sc->lmc_device->name)
56
57 #define TX_TIMEOUT (2*HZ)
58
59 #define LMC_TXDESCS            32
60 #define LMC_RXDESCS            32
61
62 #define LMC_LINK_UP            1
63 #define LMC_LINK_DOWN          0
64
65 /* These macros for generic read and write to and from the dec chip */
66 #define LMC_CSR_READ(sc, csr) \
67         inl((sc)->lmc_csrs.csr)
68 #define LMC_CSR_WRITE(sc, reg, val) \
69         outl((val), (sc)->lmc_csrs.reg)
70
71 //#ifdef _LINUX_DELAY_H
72 //      #define SLOW_DOWN_IO udelay(2);
73 //      #undef __SLOW_DOWN_IO
74 //      #define __SLOW_DOWN_IO udelay(2);
75 //#endif
76
77 #define DELAY(n) SLOW_DOWN_IO
78
79 #define lmc_delay() inl(sc->lmc_csrs.csr_9)
80
81 /* This macro sync's up with the mii so that reads and writes can take place */
82 #define LMC_MII_SYNC(sc) do {int n=32; while( n >= 0 ) { \
83                 LMC_CSR_WRITE((sc), csr_9, 0x20000); \
84                 lmc_delay(); \
85                 LMC_CSR_WRITE((sc), csr_9, 0x30000); \
86                 lmc_delay(); \
87                 n--; }} while(0)
88
89 struct lmc_regfile_t {
90     lmc_csrptr_t csr_busmode;                  /* CSR0 */
91     lmc_csrptr_t csr_txpoll;                   /* CSR1 */
92     lmc_csrptr_t csr_rxpoll;                   /* CSR2 */
93     lmc_csrptr_t csr_rxlist;                   /* CSR3 */
94     lmc_csrptr_t csr_txlist;                   /* CSR4 */
95     lmc_csrptr_t csr_status;                   /* CSR5 */
96     lmc_csrptr_t csr_command;                  /* CSR6 */
97     lmc_csrptr_t csr_intr;                     /* CSR7 */
98     lmc_csrptr_t csr_missed_frames;            /* CSR8 */
99     lmc_csrptr_t csr_9;                        /* CSR9 */
100     lmc_csrptr_t csr_10;                       /* CSR10 */
101     lmc_csrptr_t csr_11;                       /* CSR11 */
102     lmc_csrptr_t csr_12;                       /* CSR12 */
103     lmc_csrptr_t csr_13;                       /* CSR13 */
104     lmc_csrptr_t csr_14;                       /* CSR14 */
105     lmc_csrptr_t csr_15;                       /* CSR15 */
106 };
107
108 #define csr_enetrom             csr_9   /* 21040 */
109 #define csr_reserved            csr_10  /* 21040 */
110 #define csr_full_duplex         csr_11  /* 21040 */
111 #define csr_bootrom             csr_10  /* 21041/21140A/?? */
112 #define csr_gp                  csr_12  /* 21140* */
113 #define csr_watchdog            csr_15  /* 21140* */
114 #define csr_gp_timer            csr_11  /* 21041/21140* */
115 #define csr_srom_mii            csr_9   /* 21041/21140* */
116 #define csr_sia_status          csr_12  /* 2104x */
117 #define csr_sia_connectivity    csr_13  /* 2104x */
118 #define csr_sia_tx_rx           csr_14  /* 2104x */
119 #define csr_sia_general         csr_15  /* 2104x */
120
121 /* tulip length/control transmit descriptor definitions
122  *  used to define bits in the second tulip_desc_t field (length)
123  *  for the transmit descriptor -baz */
124
125 #define LMC_TDES_FIRST_BUFFER_SIZE       ((u_int32_t)(0x000007FF))
126 #define LMC_TDES_SECOND_BUFFER_SIZE      ((u_int32_t)(0x003FF800))
127 #define LMC_TDES_HASH_FILTERING          ((u_int32_t)(0x00400000))
128 #define LMC_TDES_DISABLE_PADDING         ((u_int32_t)(0x00800000))
129 #define LMC_TDES_SECOND_ADDR_CHAINED     ((u_int32_t)(0x01000000))
130 #define LMC_TDES_END_OF_RING             ((u_int32_t)(0x02000000))
131 #define LMC_TDES_ADD_CRC_DISABLE         ((u_int32_t)(0x04000000))
132 #define LMC_TDES_SETUP_PACKET            ((u_int32_t)(0x08000000))
133 #define LMC_TDES_INVERSE_FILTERING       ((u_int32_t)(0x10000000))
134 #define LMC_TDES_FIRST_SEGMENT           ((u_int32_t)(0x20000000))
135 #define LMC_TDES_LAST_SEGMENT            ((u_int32_t)(0x40000000))
136 #define LMC_TDES_INTERRUPT_ON_COMPLETION ((u_int32_t)(0x80000000))
137
138 #define TDES_SECOND_BUFFER_SIZE_BIT_NUMBER  11
139 #define TDES_COLLISION_COUNT_BIT_NUMBER     3
140
141 /* Constants for the RCV descriptor RDES */
142
143 #define LMC_RDES_OVERFLOW             ((u_int32_t)(0x00000001))
144 #define LMC_RDES_CRC_ERROR            ((u_int32_t)(0x00000002))
145 #define LMC_RDES_DRIBBLING_BIT            ((u_int32_t)(0x00000004))
146 #define LMC_RDES_REPORT_ON_MII_ERR    ((u_int32_t)(0x00000008))
147 #define LMC_RDES_RCV_WATCHDOG_TIMEOUT ((u_int32_t)(0x00000010))
148 #define LMC_RDES_FRAME_TYPE           ((u_int32_t)(0x00000020))
149 #define LMC_RDES_COLLISION_SEEN       ((u_int32_t)(0x00000040))
150 #define LMC_RDES_FRAME_TOO_LONG       ((u_int32_t)(0x00000080))
151 #define LMC_RDES_LAST_DESCRIPTOR      ((u_int32_t)(0x00000100))
152 #define LMC_RDES_FIRST_DESCRIPTOR     ((u_int32_t)(0x00000200))
153 #define LMC_RDES_MULTICAST_FRAME      ((u_int32_t)(0x00000400))
154 #define LMC_RDES_RUNT_FRAME           ((u_int32_t)(0x00000800))
155 #define LMC_RDES_DATA_TYPE            ((u_int32_t)(0x00003000))
156 #define LMC_RDES_LENGTH_ERROR         ((u_int32_t)(0x00004000))
157 #define LMC_RDES_ERROR_SUMMARY        ((u_int32_t)(0x00008000))
158 #define LMC_RDES_FRAME_LENGTH         ((u_int32_t)(0x3FFF0000))
159 #define LMC_RDES_OWN_BIT              ((u_int32_t)(0x80000000))
160
161 #define RDES_FRAME_LENGTH_BIT_NUMBER       16
162
163 #define LMC_RDES_ERROR_MASK ( (u_int32_t)( \
164           LMC_RDES_OVERFLOW \
165         | LMC_RDES_DRIBBLING_BIT \
166         | LMC_RDES_REPORT_ON_MII_ERR \
167         | LMC_RDES_COLLISION_SEEN ) )
168
169
170 /*
171  * Ioctl info
172  */
173
174 typedef struct {
175         u_int32_t       n;
176         u_int32_t       m;
177         u_int32_t       v;
178         u_int32_t       x;
179         u_int32_t       r;
180         u_int32_t       f;
181         u_int32_t       exact;
182 } lmc_av9110_t;
183
184 /*
185  * Common structure passed to the ioctl code.
186  */
187 struct lmc___ctl {
188         u_int32_t       cardtype;
189         u_int32_t       clock_source;           /* HSSI, T1 */
190         u_int32_t       clock_rate;             /* T1 */
191         u_int32_t       crc_length;
192         u_int32_t       cable_length;           /* DS3 */
193         u_int32_t       scrambler_onoff;        /* DS3 */
194         u_int32_t       cable_type;             /* T1 */
195         u_int32_t       keepalive_onoff;        /* protocol */
196         u_int32_t       ticks;                  /* ticks/sec */
197         union {
198                 lmc_av9110_t    ssi;
199         } cardspec;
200         u_int32_t       circuit_type;   /* T1 or E1 */
201 };
202
203
204 /*
205  * Carefull, look at the data sheet, there's more to this
206  * structure than meets the eye.  It should probably be:
207  *
208  * struct tulip_desc_t {
209  *         u8  own:1;
210  *         u32 status:31;
211  *         u32 control:10;
212  *         u32 buffer1;
213  *         u32 buffer2;
214  * };
215  * You could also expand status control to provide more bit information
216  */
217
218 struct tulip_desc_t {
219         s32 status;
220         s32 length;
221         u32 buffer1;
222         u32 buffer2;
223 };
224
225 /*
226  * media independent methods to check on media status, link, light LEDs,
227  * etc.
228  */
229 struct lmc___media {
230         void    (* init)(lmc_softc_t * const);
231         void    (* defaults)(lmc_softc_t * const);
232         void    (* set_status)(lmc_softc_t * const, lmc_ctl_t *);
233         void    (* set_clock_source)(lmc_softc_t * const, int);
234         void    (* set_speed)(lmc_softc_t * const, lmc_ctl_t *);
235         void    (* set_cable_length)(lmc_softc_t * const, int);
236         void    (* set_scrambler)(lmc_softc_t * const, int);
237         int     (* get_link_status)(lmc_softc_t * const);
238         void    (* set_link_status)(lmc_softc_t * const, int);
239         void    (* set_crc_length)(lmc_softc_t * const, int);
240         void    (* set_circuit_type)(lmc_softc_t * const, int);
241         void    (* watchdog)(lmc_softc_t * const);
242 };
243
244
245 #define STATCHECK     0xBEEFCAFE
246
247 /*  Included in this structure are first
248  *   - standard net_device_stats
249  *   - some other counters used for debug and driver performance
250  *  evaluation -baz
251  */
252 struct lmc_statistics
253 {
254         unsigned long     rx_packets;             /* total packets received       */
255         unsigned long     tx_packets;             /* total packets transmitted    */
256         unsigned long     rx_bytes;
257         unsigned long     tx_bytes;
258         
259         unsigned long     rx_errors;              /* bad packets received         */
260         unsigned long     tx_errors;              /* packet transmit problems     */
261         unsigned long     rx_dropped;             /* no space in linux buffers    */
262         unsigned long     tx_dropped;             /* no space available in linux  */
263         unsigned long     multicast;              /* multicast packets received   */
264         unsigned long     collisions;
265
266         /* detailed rx_errors: */
267         unsigned long     rx_length_errors;
268         unsigned long     rx_over_errors;         /* receiver ring buff overflow  */
269         unsigned long     rx_crc_errors;          /* recved pkt with crc error    */
270         unsigned long     rx_frame_errors;        /* recv'd frame alignment error */
271         unsigned long     rx_fifo_errors;         /* recv'r fifo overrun          */
272         unsigned long     rx_missed_errors;       /* receiver missed packet       */
273
274         /* detailed tx_errors */
275         unsigned long     tx_aborted_errors;
276         unsigned long     tx_carrier_errors;
277         unsigned long     tx_fifo_errors;
278         unsigned long     tx_heartbeat_errors;
279         unsigned long     tx_window_errors;
280
281         /* for cslip etc */
282         unsigned long rx_compressed;
283         unsigned long tx_compressed;
284
285         /* -------------------------------------
286          * Custom stats & counters follow -baz */
287         u_int32_t       version_size;
288         u_int32_t       lmc_cardtype;
289
290         u_int32_t       tx_ProcTimeout;
291         u_int32_t       tx_IntTimeout;
292         u_int32_t       tx_NoCompleteCnt;
293         u_int32_t       tx_MaxXmtsB4Int;
294         u_int32_t       tx_TimeoutCnt;
295         u_int32_t       tx_OutOfSyncPtr;
296         u_int32_t       tx_tbusy0;
297         u_int32_t       tx_tbusy1;
298         u_int32_t       tx_tbusy_calls;
299         u_int32_t       resetCount;
300         u_int32_t       lmc_txfull;
301         u_int32_t       tbusy;
302         u_int32_t       dirtyTx;
303         u_int32_t       lmc_next_tx;
304         u_int32_t       otherTypeCnt;
305         u_int32_t       lastType;
306         u_int32_t       lastTypeOK;
307         u_int32_t       txLoopCnt;
308         u_int32_t       usedXmtDescripCnt;
309         u_int32_t       txIndexCnt;
310         u_int32_t       rxIntLoopCnt;
311
312         u_int32_t       rx_SmallPktCnt;
313         u_int32_t       rx_BadPktSurgeCnt;
314         u_int32_t       rx_BuffAllocErr;
315         u_int32_t       tx_lossOfClockCnt;
316
317         /* T1 error counters */
318         u_int32_t       framingBitErrorCount;
319         u_int32_t       lineCodeViolationCount;
320
321         u_int32_t       lossOfFrameCount;
322         u_int32_t       changeOfFrameAlignmentCount;
323         u_int32_t       severelyErroredFrameCount;
324
325         u_int32_t       check;
326 };
327
328
329 typedef struct lmc_xinfo {
330         u_int32_t       Magic0;                         /* BEEFCAFE */
331
332         u_int32_t       PciCardType;
333         u_int32_t       PciSlotNumber;          /* PCI slot number       */
334
335         u_int16_t       DriverMajorVersion;
336         u_int16_t       DriverMinorVersion;
337         u_int16_t       DriverSubVersion;
338
339         u_int16_t       XilinxRevisionNumber;
340         u_int16_t       MaxFrameSize;
341
342         u_int16_t       t1_alarm1_status;
343         u_int16_t       t1_alarm2_status;
344
345         int                     link_status;
346         u_int32_t       mii_reg16;
347
348         u_int32_t       Magic1;                         /* DEADBEEF */
349 } LMC_XINFO;
350
351
352 /*
353  * forward decl
354  */
355 struct lmc___softc {
356         void *if_ptr;   /* General purpose pointer (used by SPPP) */
357         char                   *name;
358         u8                      board_idx;
359         struct lmc_statistics   stats;
360         struct net_device          *lmc_device;
361
362         int                     hang, rxdesc, bad_packet, some_counter;
363         u_int32_t               txgo;
364         struct lmc_regfile_t    lmc_csrs;
365         volatile u_int32_t      lmc_txtick;
366         volatile u_int32_t      lmc_rxtick;
367         u_int32_t               lmc_flags;
368         u_int32_t               lmc_intrmask;   /* our copy of csr_intr */
369         u_int32_t               lmc_cmdmode;    /* our copy of csr_cmdmode */
370         u_int32_t               lmc_busmode;    /* our copy of csr_busmode */
371         u_int32_t               lmc_gpio_io;    /* state of in/out settings */
372         u_int32_t               lmc_gpio;       /* state of outputs */
373         struct sk_buff*         lmc_txq[LMC_TXDESCS];
374         struct sk_buff*         lmc_rxq[LMC_RXDESCS];
375         volatile
376         struct tulip_desc_t     lmc_rxring[LMC_RXDESCS];
377         volatile
378         struct tulip_desc_t     lmc_txring[LMC_TXDESCS];
379         unsigned int            lmc_next_rx, lmc_next_tx;
380         volatile
381         unsigned int            lmc_taint_tx, lmc_taint_rx;
382         int                     lmc_tx_start, lmc_txfull;
383         int                     lmc_txbusy;
384         u_int16_t               lmc_miireg16;
385         int                     lmc_ok;
386         int                     last_link_status;
387         int                     lmc_cardtype;
388         u_int32_t               last_frameerr;
389         lmc_media_t            *lmc_media;
390         struct timer_list       timer;
391         lmc_ctl_t               ictl;
392         u_int32_t               TxDescriptControlInit;  
393
394         int                     tx_TimeoutInd; /* additional driver state */
395         int                     tx_TimeoutDisplay;
396         unsigned int            lastlmc_taint_tx;
397         int                     lasttx_packets;
398         u_int32_t               tx_clockState;
399         u_int32_t               lmc_crcSize;
400         LMC_XINFO               lmc_xinfo; 
401         char                    lmc_yel, lmc_blue, lmc_red; /* for T1 and DS3 */
402         char                    lmc_timing; /* for HSSI and SSI */
403         int                     got_irq;
404
405         char                    last_led_err[4];
406
407         u32                     last_int;
408         u32                     num_int;
409
410         spinlock_t              lmc_lock;
411         u_int16_t               if_type;       /* PPP or NET */
412         struct ppp_device       *pd;
413
414         /* Failure cases */
415         u8                       failed_ring;
416         u8                       failed_recv_alloc;
417
418         /* Structure check */
419         u32                     check;
420 };
421
422 #define LMC_PCI_TIME 1
423 #define LMC_EXT_TIME 0
424
425 #define PKT_BUF_SZ              1542  /* was 1536 */
426
427 /* CSR5 settings */
428 #define TIMER_INT     0x00000800
429 #define TP_LINK_FAIL  0x00001000
430 #define TP_LINK_PASS  0x00000010
431 #define NORMAL_INT    0x00010000
432 #define ABNORMAL_INT  0x00008000
433 #define RX_JABBER_INT 0x00000200
434 #define RX_DIED       0x00000100
435 #define RX_NOBUFF     0x00000080
436 #define RX_INT        0x00000040
437 #define TX_FIFO_UNDER 0x00000020
438 #define TX_JABBER     0x00000008
439 #define TX_NOBUFF     0x00000004
440 #define TX_DIED       0x00000002
441 #define TX_INT        0x00000001
442
443 /* CSR6 settings */
444 #define OPERATION_MODE  0x00000200 /* Full Duplex      */
445 #define PROMISC_MODE    0x00000040 /* Promiscuous Mode */
446 #define RECIEVE_ALL     0x40000000 /* Recieve All      */
447 #define PASS_BAD_FRAMES 0x00000008 /* Pass Bad Frames  */
448
449 /* Dec control registers  CSR6 as well */
450 #define LMC_DEC_ST 0x00002000
451 #define LMC_DEC_SR 0x00000002
452
453 /* CSR15 settings */
454 #define RECV_WATCHDOG_DISABLE 0x00000010
455 #define JABBER_DISABLE        0x00000001
456
457 /* More settings */
458 /*
459  * aSR6 -- Command (Operation Mode) Register
460  */
461 #define TULIP_CMD_RECEIVEALL    0x40000000L /* (RW)  Receivel all frames? */
462 #define TULIP_CMD_MUSTBEONE     0x02000000L /* (RW)  Must Be One (21140) */
463 #define TULIP_CMD_TXTHRSHLDCTL  0x00400000L /* (RW)  Transmit Threshold Mode (21140) */
464 #define TULIP_CMD_STOREFWD      0x00200000L /* (RW)  Store and Foward (21140) */
465 #define TULIP_CMD_NOHEARTBEAT   0x00080000L /* (RW)  No Heartbeat (21140) */
466 #define TULIP_CMD_PORTSELECT    0x00040000L /* (RW)  Post Select (100Mb) (21140) */
467 #define TULIP_CMD_FULLDUPLEX    0x00000200L /* (RW)  Full Duplex Mode */
468 #define TULIP_CMD_OPERMODE      0x00000C00L /* (RW)  Operating Mode */
469 #define TULIP_CMD_PROMISCUOUS   0x00000041L /* (RW)  Promiscuous Mode */
470 #define TULIP_CMD_PASSBADPKT    0x00000008L /* (RW)  Pass Bad Frames */
471 #define TULIP_CMD_THRESHOLDCTL  0x0000C000L /* (RW)  Threshold Control */
472
473 #define TULIP_GP_PINSET         0x00000100L
474 #define TULIP_BUSMODE_SWRESET   0x00000001L
475 #define TULIP_WATCHDOG_TXDISABLE 0x00000001L
476 #define TULIP_WATCHDOG_RXDISABLE 0x00000010L
477
478 #define TULIP_STS_NORMALINTR    0x00010000L /* (RW)  Normal Interrupt */
479 #define TULIP_STS_ABNRMLINTR    0x00008000L /* (RW)  Abnormal Interrupt */
480 #define TULIP_STS_ERI           0x00004000L /* (RW)  Early Receive Interrupt */
481 #define TULIP_STS_SYSERROR      0x00002000L /* (RW)  System Error */
482 #define TULIP_STS_GTE           0x00000800L /* (RW)  General Pupose Timer Exp */
483 #define TULIP_STS_ETI           0x00000400L /* (RW)  Early Transmit Interrupt */
484 #define TULIP_STS_RXWT          0x00000200L /* (RW)  Receiver Watchdog Timeout */
485 #define TULIP_STS_RXSTOPPED     0x00000100L /* (RW)  Receiver Process Stopped */
486 #define TULIP_STS_RXNOBUF       0x00000080L /* (RW)  Receive Buf Unavail */
487 #define TULIP_STS_RXINTR        0x00000040L /* (RW)  Receive Interrupt */
488 #define TULIP_STS_TXUNDERFLOW   0x00000020L /* (RW)  Transmit Underflow */
489 #define TULIP_STS_TXJABER       0x00000008L /* (RW)  Jabber timeout */
490 #define TULIP_STS_TXNOBUF       0x00000004L
491 #define TULIP_STS_TXSTOPPED     0x00000002L /* (RW)  Transmit Process Stopped */
492 #define TULIP_STS_TXINTR        0x00000001L /* (RW)  Transmit Interrupt */
493
494 #define TULIP_STS_RXS_STOPPED   0x00000000L /*        000 - Stopped */
495
496 #define TULIP_STS_RXSTOPPED     0x00000100L             /* (RW)  Receive Process Stopped */
497 #define TULIP_STS_RXNOBUF       0x00000080L
498
499 #define TULIP_CMD_TXRUN         0x00002000L /* (RW)  Start/Stop Transmitter */
500 #define TULIP_CMD_RXRUN         0x00000002L /* (RW)  Start/Stop Receive Filtering */
501 #define TULIP_DSTS_TxDEFERRED   0x00000001      /* Initially Deferred */
502 #define TULIP_DSTS_OWNER        0x80000000      /* Owner (1 = 21040) */
503 #define TULIP_DSTS_RxMIIERR     0x00000008
504 #define LMC_DSTS_ERRSUM         (TULIP_DSTS_RxMIIERR)
505
506 #define TULIP_DEFAULT_INTR_MASK  (TULIP_STS_NORMALINTR \
507   | TULIP_STS_RXINTR       \
508   | TULIP_STS_TXINTR     \
509   | TULIP_STS_ABNRMLINTR \
510   | TULIP_STS_SYSERROR   \
511   | TULIP_STS_TXSTOPPED  \
512   | TULIP_STS_TXUNDERFLOW\
513   | TULIP_STS_RXSTOPPED )
514
515 #define DESC_OWNED_BY_SYSTEM   ((u_int32_t)(0x00000000))
516 #define DESC_OWNED_BY_DC21X4   ((u_int32_t)(0x80000000))
517
518 #ifndef TULIP_CMD_RECEIVEALL
519 #define TULIP_CMD_RECEIVEALL 0x40000000L
520 #endif
521
522 /* Adapter module number */
523 #define LMC_ADAP_HSSI           2
524 #define LMC_ADAP_DS3            3
525 #define LMC_ADAP_SSI            4
526 #define LMC_ADAP_T1             5
527
528 #define HDLC_HDR_LEN  4
529 #define HDLC_ADDR_LEN 1
530 #define HDLC_SLARP    0x8035
531 #define LMC_MTU 1500
532 #define SLARP_LINECHECK 2
533
534 #define LMC_CRC_LEN_16 2  /* 16-bit CRC */
535 #define LMC_CRC_LEN_32 4
536
537 #ifdef LMC_HDLC
538 /* definition of an hdlc header. */
539 struct hdlc_hdr
540 {
541         u8  address;
542         u8  control;
543         u16 type;
544 };
545
546 /* definition of a slarp header. */
547 struct slarp
548 {
549         long code;
550         union sl
551         {
552                 struct
553                 {
554                         ulong address;
555                         ulong mask;
556                         ushort unused;
557                 } add;
558                 struct
559                 {
560                         ulong mysequence;
561                         ulong yoursequence;
562                         ushort reliability;
563                         ulong time;
564                 } chk;
565         } t;
566 };
567 #endif /* LMC_HDLC */
568
569
570 #endif /* _LMC_VAR_H_ */