FreeBSD/Linux Kernel Cross Reference
sys/dev/sbni/if_sbnivar.h

     /*-
      * Copyright (c) 1997-2001 Granch, Ltd. All rights reserved.
      * Author: Denis I.Timofeev <timofeev@granch.ru>
      *
      * Redistributon and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    /*
     * SBNI12 definitions
     */
    
    /*
     * CONFIGURATION PARAMETER:
     *
     *      Uncomment this if you want to use model SBNI12D-11/ISA with same IRQ
     *      for both first and second channels.
     */
    #define SBNI_DUAL_COMPOUND 1
    
    #define SBNI_DEBUG 0
    
    #if SBNI_DEBUG
    #define DP(A) A
    #else
    #define DP(A)
    #endif
    
    struct sbni_in_stats {
            u_int32_t       all_rx_number;
            u_int32_t       bad_rx_number;
            u_int32_t       timeout_number;
            u_int32_t       all_tx_number;
            u_int32_t       resend_tx_number;
    };
    
    struct sbni_flags {
            u_int   mac_addr        : 24;
            u_int   rxl             : 4;
            u_int   rate            : 2;
            u_int   fixed_rxl       : 1;
            u_int   fixed_rate      : 1;
    };
    
    
    #ifdef _KERNEL  /* to avoid compile this decls with sbniconfig */
    
    struct sbni_softc {
            struct  ifnet *ifp;
            device_t dev;
            u_char  enaddr[6];
    
            int     io_rid;
            struct  resource *io_res;
            int     io_off;
    
            int     irq_rid;
            struct  resource *irq_res;
            void    *irq_handle;
    
            struct  mbuf *rx_buf_p;         /* receive buffer ptr */
            struct  mbuf *tx_buf_p;         /* transmit buffer ptr */
            
            u_int   pktlen;                 /* length of transmitting pkt */
            u_int   framelen;               /* current frame length */
            u_int   maxframe;               /* maximum valid frame length */
            u_int   state;
            u_int   inppos;                 /* positions in rx/tx buffers */
            u_int   outpos;                 /* positions in rx/tx buffers */
    
            /* transmitting frame number - from frames qty to 1 */
            u_int   tx_frameno;
    
            /* expected number of next receiving frame */
            u_int   wait_frameno;
    
            /* count of failed attempts to frame send - 32 attempts do before
               error - while receiver tunes on opposite side of wire */
           u_int   trans_errors;
   
           /* idle time; send pong when limit exceeded */
           u_int   timer_ticks;
   
           /* fields used for receive level autoselection */
           int     delta_rxl;
           u_int   cur_rxl_index;
           u_int   timeout_rxl;
           u_int32_t       cur_rxl_rcvd;
           u_int32_t       prev_rxl_rcvd;
   
           struct  sbni_csr1 csr1;                 /* current value of CSR1 */
           struct  sbni_in_stats in_stats;         /* internal statistics */ 
   
           struct  callout wch;
           struct  mtx lock;
   
           struct  sbni_softc *slave_sc;
   
   #ifdef SBNI_DUAL_COMPOUND
           struct  sbni_softc *link;
   #endif
   };
   
   #define SBNI_LOCK(sc)           mtx_lock(&(sc)->lock)
   #define SBNI_UNLOCK(sc)         mtx_unlock(&(sc)->lock)
   #define SBNI_ASSERT_LOCKED(sc)  mtx_assert(&(sc)->lock, MA_OWNED)
   
   void    sbni_intr(void *);
   int     sbni_probe(struct sbni_softc *);
   int     sbni_attach(struct sbni_softc *, int, struct sbni_flags);
   void    sbni_detach(struct sbni_softc *);
   void    sbni_release_resources(struct sbni_softc *);
   
   extern u_int32_t next_sbni_unit;
   
   #ifdef SBNI_DUAL_COMPOUND
   void                    sbni_add(struct sbni_softc *);
   struct sbni_softc       *connect_to_master(struct sbni_softc *);
   #endif
   #endif  /* _KERNEL */
   
   /*
    * SBNI socket ioctl params
    */
   #define SIOCGHWFLAGS    _IOWR('i', 62, struct ifreq)    /* get flags */
   #define SIOCSHWFLAGS    _IOWR('i', 61, struct ifreq)    /* set flags */
   #define SIOCGINSTATS    _IOWR('i', 60, struct ifreq)    /* get internal stats */
   #define SIOCRINSTATS    _IOWR('i', 63, struct ifreq)    /* reset internal stats */
   
   
   /*
    * CRC-32 stuff
    */
   #define CRC32(c,crc) (crc32tab[((size_t)(crc) ^ (c)) & 0xff] ^ (((crc) >> 8) & 0x00ffffff))
         /* CRC generator EDB88320 */
         /* CRC remainder 2144DF1C */
         /* CRC initial value 0 */
   #define CRC32_REMAINDER 0x2144df1c
   #define CRC32_INITIAL 0x00000000

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