FreeBSD/Linux Kernel Cross Reference
sys/dev/lnc/if_lncreg.h

     /*-
      * Copyright (c) 1994-2000
      *      Paul Richards.  All rights reserved.
      *
      * Redistribution 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, this list of conditions and the following disclaimer,
     *    verbatim and that no modifications are made prior to this
     *    point in the file.
     * 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.
     * 3. The name Paul Richards may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``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 PAUL RICHARDS 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 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/6.0/sys/dev/lnc/if_lncreg.h 79207 2001-07-04 13:00:21Z nyan $
     */
    
    /*
     * Am7990, Local Area Network Controller for Ethernet (LANCE)
     *
     * The LANCE has four Control and Status Registers(CSRs) which are accessed
     * through two bus addressable ports, the address port (RAP) and the data
     * port (RDP).
     *
     */
    
    #define CSR0    0
    #define CSR1    1
    #define CSR2    2
    #define CSR3    3
    #define CSR88   88
    #define CSR89   89
    
    #define BCR49   49
    #define BCR32   32
    #define BCR33   33
    #define BCR34   34
    
    
    /* Control and Status Register Masks */
    
    /* CSR0 */
    
    #define ERR     0x8000
    #define BABL    0x4000
    #define CERR    0x2000
    #define MISS    0x1000
    #define MERR    0x0800
    #define RINT    0x0400
    #define TINT    0x0200
    #define IDON    0x0100
    #define INTR    0x0080
    #define INEA    0x0040
    #define RXON    0x0020
    #define TXON    0x0010
    #define TDMD    0x0008
    #define STOP    0x0004
    #define STRT    0x0002
    #define INIT    0x0001
    
    /*
     * CSR3
     *
     * Bits 3-15 are reserved.
     *
     */
    
    #define BSWP    0x0004
    #define ACON    0x0002
    #define BCON    0x0001
    
    /* ISA Bus Configuration Registers */
    #define MSRDA   0x0000  /* ISACSR0: Master Mode Read Activity */
    #define MSWRA   0x0001  /* ISACSR1: Master Mode Write Activity */
    #define MC      0x0002  /* ISACSR2: Miscellaneous Configuration */
    
    #define LED1    0x0005  /* ISACSR5: LED1 Status */
    #define LED2    0x0006  /* ISACSR6: LED2 Status */
    #define LED3    0x0007  /* ISACSR7: LED3 Status */
    
    #define LED_PSE         0x0080  /* Pulse Stretcher */
    #define LED_XMTE        0x0010  /* Transmit Status */
    #define LED_RVPOLE      0x0008  /* Receive Polarity */
    #define LED_RCVE        0x0004  /* Receive Status */
   #define LED_JABE        0x0002  /* Jabber */
   #define LED_COLE        0x0001  /* Collision */
   
   /* Initialisation block */
   
   struct init_block {
           u_short mode;           /* Mode register                        */
           u_char  padr[6];        /* Ethernet address                     */
           u_char  ladrf[8];       /* Logical address filter (multicast)   */
           u_short rdra;           /* Low order pointer to receive ring    */
           u_short rlen;           /* High order pointer and no. rings     */
           u_short tdra;           /* Low order pointer to transmit ring   */
           u_short tlen;           /* High order pointer and no rings      */
   };
   
   /* Initialisation Block Mode Register Masks */
   
   #define PROM      0x8000   /* Promiscuous Mode */
   #define DRCVBC    0x4000   /* Disable Receive Broadcast */
   #define DRCVPA    0x2000   /* Disable Receive Physical Address */
   #define DLNKTST 0x1000   /* Disable Link Status */
   #define DAPC      0x0800   /* Disable Automatic Polarity Correction */
   #define MENDECL   0x0400   /* MENDEC Loopback Mode */
   #define LRT       0x0200   /* Low Receive Threshold (T-MAU mode only) */
   #define TSEL      0x0200   /* Transmit Mode Select  (AUI mode only) */
   #define PORTSEL   0x0180   /* Port Select bits */
   #define INTL      0x0040   /* Internal Loopback */
   #define DRTY      0x0020   /* Disable Retry */
   #define FCOLL     0x0010   /* Force Collision */
   #define DXMTFCS   0x0008   /* Disable transmit CRC (FCS) */
   #define LOOP      0x0004   /* Loopback Enabl */
   #define DTX       0x0002   /* Disable the transmitter */
   #define DRX       0x0001   /* Disable the receiver */
   
   /*
    * Message Descriptor Structure
    *
    * Each transmit or receive descriptor ring entry (RDRE's and TDRE's)
    * is composed of 4, 16-bit, message descriptors. They contain the following
    * information.
    *
    * 1. The address of the actual message data buffer in user (host) memory.
    * 2. The length of that message buffer.
    * 3. The status information for that particular buffer. The eight most
    *    significant bits of md1 are collectively termed the STATUS of the
    *    descriptor.
    *
    * Descriptor md0 contains LADR 0-15, the low order 16 bits of the 24-bit
    * address of the actual data buffer.  Bits 0-7 of descriptor md1 contain
    * HADR, the high order 8-bits of the 24-bit data buffer address. Bits 8-15
    * of md1 contain the status flags of the buffer. Descriptor md2 contains the
    * buffer byte count in bits 0-11 as a two's complement number and must have
    * 1's written to bits 12-15. For the receive entry md3 has the Message Byte
    * Count in bits 0-11, this is the length of the received message and is valid
    * only when ERR is cleared and ENP is set. For the transmit entry it contains
    * more status information.
    *
    */
   
   struct mds {
           u_short md0;
           u_short md1;
           short   md2;
           u_short md3;
   };
   
   /* Receive STATUS flags for md1 */
   
   #define OWN     0x8000          /* Owner bit, 0=host, 1=Lance   */
   #define MDERR   0x4000          /* Error                        */
   #define FRAM    0x2000          /* Framing error error          */
   #define OFLO    0x1000          /* Silo overflow                */
   #define CRC     0x0800          /* CRC error                    */
   #define RBUFF   0x0400          /* Buffer error                 */
   #define STP     0x0200          /* Start of packet              */
   #define ENP     0x0100          /* End of packet                */
   #define HADR    0x00FF          /* High order address bits      */
   
   /* Receive STATUS flags for md2 */
   
   #define BCNT    0x0FFF          /* Size of data buffer as 2's comp. no. */
   
   /* Receive STATUS flags for md3 */
   
   #define MCNT    0x0FFF          /* Total size of data for received packet */
   
   /* Transmit STATUS flags for md1 */
   
   #define ADD_FCS 0x2000          /* Controls generation of FCS   */
   #define MORE    0x1000          /* Indicates more than one retry was needed */
   #define ONE     0x0800          /* Exactly one retry was needed */
   #define DEF     0x0400          /* Packet transmit deferred -- channel busy */
   
   /*
    * Transmit status flags for md2
    *
    * Same as for receive descriptor.
    *
    * BCNT   0x0FFF         Size of data buffer as 2's complement number.
    *
    */
   
   /* Transmit status flags for md3 */
   
   #define TBUFF   0x8000          /* Buffer error         */
   #define UFLO    0x4000          /* Silo underflow       */
   #define LCOL    0x1000          /* Late collision       */
   #define LCAR    0x0800          /* Loss of carrier      */
   #define RTRY    0x0400          /* Tried 16 times       */
   #define TDR     0x03FF          /* Time domain reflectometry */

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