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/* sbni.h:  definitions for a Granch SBNI12 driver, version 5.0.0

 * Written 2001 Denis I.Timofeev (timofeev@granch.ru)

 * This file is distributed under the GNU GPL

 */

#ifndef SBNI_H

#define SBNI_H

#ifdef SBNI_DEBUG

#define DP( A ) A

#else

#define DP( A )

#endif

/* We don't have official vendor id yet... */

#define SBNI_PCI_VENDOR         0x55 

#define SBNI_PCI_DEVICE         0x9f

#define ISA_MODE 0x00

#define PCI_MODE 0x01

#define SBNI_IO_EXTENT  4

enum sbni_reg {

        CSR0 = 0,

        CSR1 = 1,

        DAT  = 2

};

/* CSR0 mapping */

enum {

        BU_EMP = 0x02,

        RC_CHK = 0x04,

        CT_ZER = 0x08,

        TR_REQ = 0x10,

        TR_RDY = 0x20,

        EN_INT = 0x40,

        RC_RDY = 0x80

};

/* CSR1 mapping */

#define PR_RES 0x80

struct sbni_csr1 {

#ifdef __LITTLE_ENDIAN_BITFIELD

        u8 rxl  : 5;

        u8 rate : 2;

        u8      : 1;

#else

        u8      : 1;

        u8 rate : 2;

        u8 rxl  : 5;

#endif

};

/* fields in frame header */

#define FRAME_ACK_MASK  (unsigned short)0x7000

#define FRAME_LEN_MASK  (unsigned short)0x03FF

#define FRAME_FIRST     (unsigned short)0x8000

#define FRAME_RETRY     (unsigned short)0x0800

#define FRAME_SENT_BAD  (unsigned short)0x4000

#define FRAME_SENT_OK   (unsigned short)0x3000

/* state flags */

enum {

        FL_WAIT_ACK    = 0x01,

        FL_NEED_RESEND = 0x02,

        FL_PREV_OK     = 0x04,

        FL_SLOW_MODE   = 0x08,

        FL_SECONDARY   = 0x10,

#ifdef CONFIG_SBNI_MULTILINE

        FL_SLAVE       = 0x20,

#endif

        FL_LINE_DOWN   = 0x40

};

enum {

        DEFAULT_IOBASEADDR = 0x210,

        DEFAULT_INTERRUPTNUMBER = 5,

        DEFAULT_RATE = 0,

        DEFAULT_FRAME_LEN = 1012

};

#define DEF_RXL_DELTA   -1

#define DEF_RXL         0xf

#define SBNI_SIG 0x5a

#define SBNI_MIN_LEN    60      /* Shortest Ethernet frame without FCS */

#define SBNI_MAX_FRAME  1023

#define ETHER_MAX_LEN   1518

#define SBNI_TIMEOUT    (HZ/10)

#define TR_ERROR_COUNT  32

#define CHANGE_LEVEL_START_TICKS 4

#define SBNI_MAX_NUM_CARDS      16

/* internal SBNI-specific statistics */

struct sbni_in_stats {

        u32     all_rx_number;

        u32     bad_rx_number;

        u32     timeout_number;

        u32     all_tx_number;

        u32     resend_tx_number;

};

/* SBNI ioctl params */

#define SIOCDEVGETINSTATS       SIOCDEVPRIVATE

#define SIOCDEVRESINSTATS       SIOCDEVPRIVATE+1

#define SIOCDEVGHWSTATE         SIOCDEVPRIVATE+2

#define SIOCDEVSHWSTATE         SIOCDEVPRIVATE+3

#define SIOCDEVENSLAVE          SIOCDEVPRIVATE+4

#define SIOCDEVEMANSIPATE       SIOCDEVPRIVATE+5

/* data packet for SIOCDEVGHWSTATE/SIOCDEVSHWSTATE ioctl requests */

struct sbni_flags {

        u32     rxl             : 4;

        u32     rate            : 2;

        u32     fixed_rxl       : 1;

        u32     slow_mode       : 1;

        u32     mac_addr        : 24;

};

/*

 * CRC-32 stuff

 */

#define CRC32(c,crc) (crc32tab[((size_t)(crc) ^ (c)) & 0xff] ^ (((crc) >> 8) & 0x00FFFFFF))

      /* CRC generator 0xEDB88320 */

      /* CRC remainder 0x2144DF1C */

      /* CRC initial value 0x00000000 */

#define CRC32_REMAINDER 0x2144DF1C

#define CRC32_INITIAL 0x00000000

#ifndef __initdata

#define __initdata

#endif

#endif