drivers/net/wan/sbni.h

   1 /* sbni.h:  definitions for a Granch SBNI12 driver, version 5.0.0
   2  * Written 2001 Denis I.Timofeev (timofeev@granch.ru)
   3  * This file is distributed under the GNU GPL
   4  */
   5
   6 #ifndef SBNI_H
   7 #define SBNI_H
   8
   9 #ifdef SBNI_DEBUG
  10 #define DP( A ) A
  11 #else
  12 #define DP( A )
  13 #endif
  14
  15
  16 /* We don't have official vendor id yet... */
  17 #define SBNI_PCI_VENDOR         0x55
  18 #define SBNI_PCI_DEVICE         0x9f
  19
  20 #define ISA_MODE 0x00
  21 #define PCI_MODE 0x01
  22
  23 #define SBNI_IO_EXTENT  4
  24
  25 enum sbni_reg {
  26         CSR0 = 0,
  27         CSR1 = 1,
  28         DAT  = 2
  29 };
  30
  31 /* CSR0 mapping */
  32 enum {
  33         BU_EMP = 0x02,
  34         RC_CHK = 0x04,
  35         CT_ZER = 0x08,
  36         TR_REQ = 0x10,
  37         TR_RDY = 0x20,
  38         EN_INT = 0x40,
  39         RC_RDY = 0x80
  40 };
  41
  42
  43 /* CSR1 mapping */
  44 #define PR_RES 0x80
  45
  46 struct sbni_csr1 {
  47 #ifdef __LITTLE_ENDIAN_BITFIELD
  48         u8 rxl  : 5;
  49         u8 rate : 2;
  50         u8      : 1;
  51 #else
  52         u8      : 1;
  53         u8 rate : 2;
  54         u8 rxl  : 5;
  55 #endif
  56 };
  57
  58 /* fields in frame header */
  59 #define FRAME_ACK_MASK  (unsigned short)0x7000
  60 #define FRAME_LEN_MASK  (unsigned short)0x03FF
  61 #define FRAME_FIRST     (unsigned short)0x8000
  62 #define FRAME_RETRY     (unsigned short)0x0800
  63
  64 #define FRAME_SENT_BAD  (unsigned short)0x4000
  65 #define FRAME_SENT_OK   (unsigned short)0x3000
  66
  67
  68 /* state flags */
  69 enum {
  70         FL_WAIT_ACK    = 0x01,
  71         FL_NEED_RESEND = 0x02,
  72         FL_PREV_OK     = 0x04,
  73         FL_SLOW_MODE   = 0x08,
  74         FL_SECONDARY   = 0x10,
  75 #ifdef CONFIG_SBNI_MULTILINE
  76         FL_SLAVE       = 0x20,
  77 #endif
  78         FL_LINE_DOWN   = 0x40
  79 };
  80
  81
  82 enum {
  83         DEFAULT_IOBASEADDR = 0x210,
  84         DEFAULT_INTERRUPTNUMBER = 5,
  85         DEFAULT_RATE = 0,
  86         DEFAULT_FRAME_LEN = 1012
  87 };
  88
  89 #define DEF_RXL_DELTA   -1
  90 #define DEF_RXL         0xf
  91
  92 #define SBNI_SIG 0x5a
  93
  94 #define SBNI_MIN_LEN    60      /* Shortest Ethernet frame without FCS */
  95 #define SBNI_MAX_FRAME  1023
  96 #define ETHER_MAX_LEN   1518
  97
  98 #define SBNI_TIMEOUT    (HZ/10)
  99
 100 #define TR_ERROR_COUNT  32
 101 #define CHANGE_LEVEL_START_TICKS 4
 102
 103 #define SBNI_MAX_NUM_CARDS      16
 104
 105 /* internal SBNI-specific statistics */
 106 struct sbni_in_stats {
 107         u32     all_rx_number;
 108         u32     bad_rx_number;
 109         u32     timeout_number;
 110         u32     all_tx_number;
 111         u32     resend_tx_number;
 112 };
 113
 114 /* SBNI ioctl params */
 115 #define SIOCDEVGETINSTATS       SIOCDEVPRIVATE
 116 #define SIOCDEVRESINSTATS       SIOCDEVPRIVATE+1
 117 #define SIOCDEVGHWSTATE         SIOCDEVPRIVATE+2
 118 #define SIOCDEVSHWSTATE         SIOCDEVPRIVATE+3
 119 #define SIOCDEVENSLAVE          SIOCDEVPRIVATE+4
 120 #define SIOCDEVEMANSIPATE       SIOCDEVPRIVATE+5
 121
 122
 123 /* data packet for SIOCDEVGHWSTATE/SIOCDEVSHWSTATE ioctl requests */
 124 struct sbni_flags {
 125         u32     rxl             : 4;
 126         u32     rate            : 2;
 127         u32     fixed_rxl       : 1;
 128         u32     slow_mode       : 1;
 129         u32     mac_addr        : 24;
 130 };
 131
 132 /*
 133  * CRC-32 stuff
 134  */
 135 #define CRC32(c,crc) (crc32tab[((size_t)(crc) ^ (c)) & 0xff] ^ (((crc) >> 8) & 0x00FFFFFF))
 136       /* CRC generator 0xEDB88320 */
 137       /* CRC remainder 0x2144DF1C */
 138       /* CRC initial value 0x00000000 */
 139 #define CRC32_REMAINDER 0x2144DF1C
 140 #define CRC32_INITIAL 0x00000000
 141
 142 #ifndef __initdata
 143 #define __initdata
 144 #endif
 145
 146 #endif
 147