i386/linux/linux-2.3.21/drivers/net/wan/sbni.h

   1 /*
   2  * sbni.h - header file for sbni linux device driver
   3  *
   4  * Copyright (C) 1999 Granch ltd., Yaroslav Polyakov (xenon@granch.ru).
   5  *
   6  */
   7
   8 /*
   9  * SBNI12 definitions
  10  *
  11  * Revision 2.0.0  1997/08/27
  12  * Initial revision
  13  *
  14  * Revision 2.1.0  1999/04/26
  15  * dev_priv structure changed to support balancing and some other features.
  16  *
  17  */
  18
  19 #ifndef __SBNI_H
  20 #define __SBNI_H
  21
  22 #define SBNI_DEBUG 0
  23
  24 #if SBNI_DEBUG
  25 #define DP( A ) A
  26 #else
  27 #define DP( A )
  28 #endif
  29
  30 typedef unsigned char BOOLEAN;
  31
  32 #define TRUE 1
  33 #define FALSE 0
  34
  35 #define SBNI_IO_EXTENT  0x4
  36 #define SB_MAX_BUFFER_ARRAY 1023
  37
  38 #define CSR0    0
  39 #define CSR1    1
  40
  41 #define DAT     2
  42
  43 /* CSR0 mapping */
  44 #define BU_EMP  (1 << 1)        /* r z    */
  45 #define RC_CHK  (1 << 2)        /* rw     */
  46 #define CT_ZER  (1 << 3)        /*  w     */
  47 #define TR_REQ  (1 << 4)        /* rwz*   */
  48
  49 #define TR_RDY  (1 << 5)        /* r z    */
  50 #define EN_INT  (1 << 6)        /* rwz* */
  51 #define RC_RDY  (1 << 7)        /* r z    */
  52
  53 /* CSR1 mapping */
  54 #define PR_RES  (1 << 7)        /*  w     */
  55
  56 struct sbni_csr1 {
  57         unsigned rxl:5;
  58         unsigned rate:2;
  59         unsigned:1;
  60 };
  61
  62 #define DEF_RXL_DELTA   -1
  63 #define DEF_RXL         0xf
  64 #define DEF_RATE        0
  65 #define DEF_FRAME_LEN   (1023 - 14 - 9)
  66
  67 #ifdef MODULE
  68
  69 #define SBNI_MAX_NUM_CARDS 8
  70 #define SBNI_MAX_SLAVES 8
  71
  72
  73 #endif                          /* MODULE */
  74
  75 #define SBNI_SIG 0x5a
  76
  77 #define SB_ETHER_MIN_LEN 60
  78
  79 #define SB_FILLING_CHAR (unsigned char)0x00
  80 #define TR_ERROR_COUNT 32
  81 #define CHANGE_LEVEL_START_TICKS 4
  82 #define SBNI_INTERNAL_QUEUE_SIZE 10     /* 100 ? */
  83
  84 #define PACKET_FIRST_FRAME (unsigned short)0x8000
  85 #define RECEIVE_FRAME_RESEND (unsigned short)0x0800
  86 #define PACKET_RESEND 0x4000
  87 #define PACKET_SEND_OK 0x3000
  88 #define PACKET_LEN_MASK (unsigned short)0x03ff
  89 #define PACKET_INF_MASK (unsigned short)0x7000
  90
  91 #define ETHER_ADDR_LEN 6
  92
  93 #define SBNI_TIMEOUT HZ/10      /* ticks to wait for pong or packet */
  94                 /* sbni watchdog called SBNI_HZ times per sec. */
  95
  96 struct sbni_in_stats {
  97         unsigned int all_rx_number;
  98         unsigned int bad_rx_number;
  99         unsigned int timeout_number;
 100         unsigned int all_tx_number;
 101         unsigned int resend_tx_number;
 102 };
 103
 104
 105 /*
 106  *    Board-specific info in dev->priv.
 107  */
 108 struct net_local {
 109         struct enet_statistics stats;
 110
 111         struct timer_list watchdog;
 112         unsigned int realframelen;      /* the current size of the SB-frame */
 113         unsigned int eth_trans_buffer_len;      /* tx buffer length */
 114         unsigned int outpos;
 115         unsigned int inppos;
 116         unsigned int frame_len; /* The set SB-frame size */
 117         unsigned int tr_err;
 118         unsigned int timer_ticks;
 119         BOOLEAN last_receive_OK;
 120         BOOLEAN tr_resend;
 121
 122         unsigned char wait_frame_number;
 123         unsigned char eth_trans_buffer[1520];   /* tx buffer */
 124         unsigned char HSCounter;        /* Reserved field */
 125         unsigned char eth_rcv_buffer[2600];     /* rx buffer */
 126         struct sbni_csr1 csr1;
 127         /* Internal Statistics */
 128         struct sbni_in_stats in_stats;
 129
 130         int rxl_curr;           /* current receive level value [0..0xf] */
 131         int rxl_delta;          /* receive level delta (+1, -1)
 132                                    rxl_delta == 0 - receive level
 133                                    autodetection
 134                                    disabled            */
 135         unsigned int ok_curr;   /* current ok frames received           */
 136         unsigned int ok_prev;   /* previous ok frames received          */
 137         unsigned int timeout_rxl;
 138
 139         struct sk_buff_head queue;
 140         struct sk_buff *currframe;
 141         BOOLEAN waitack;
 142
 143         struct net_device *m;   /* master */
 144         struct net_device *me;  /* me */
 145         struct net_local *next_lp;      /* next lp */
 146
 147         int carrier;
 148
 149
 150 };
 151
 152
 153 struct sbni_hard_header {
 154
 155         /* internal sbni stuff */
 156         unsigned int crc;       /* 4 */
 157         unsigned short packetlen;       /* 2 */
 158         unsigned char number;   /* 1 */
 159         unsigned char reserv;   /* 1 */
 160
 161         /* 8 */
 162
 163         /* ethernet stuff */
 164         unsigned char h_dest[ETH_ALEN];         /* destination eth addr */
 165         unsigned char h_source[ETH_ALEN];       /* source ether addr    */
 166         unsigned short h_proto; /* packet type ID field */
 167         /* +14 */
 168         /* 22 */
 169
 170 };
 171
 172 #define SBNI_HH_SZ 22
 173
 174 struct sbni_flags {
 175         unsigned rxl:4;
 176         unsigned rate:2;
 177         unsigned fixed_rxl:1;
 178         unsigned fixed_rate:1;
 179 };
 180
 181 #define RCV_NO 0
 182 #define RCV_OK 1
 183 #define RCV_WR 2
 184
 185
 186 #define SIOCDEVGETINSTATS       SIOCDEVPRIVATE
 187 #define SIOCDEVRESINSTATS       SIOCDEVPRIVATE+1
 188 #define SIOCDEVGHWSTATE         SIOCDEVPRIVATE+2
 189 #define SIOCDEVSHWSTATE         SIOCDEVPRIVATE+3
 190 #define SIOCDEVENSLAVE          SIOCDEVPRIVATE+4
 191 #define SIOCDEVEMANSIPATE       SIOCDEVPRIVATE+5
 192
 193
 194 #endif                          /* __SBNI_H */