sys/dev/isa/if_elreg.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 1994, Matthew E. Kimmel.  Permission is hereby granted
   5  * to use, copy, modify and distribute this software provided that both
   6  * the copyright notice and this permission notice appear in all copies
   7  * of the software, derivative works or modified versions, and any
   8  * portions thereof.
   9  */
  10
  11 /*
  12  * 3COM Etherlink 3C501 Register Definitions
  13  */
  14
  15 /*
  16  * I/O Ports
  17  */
  18 #define EL_RXS          0x6     /* Receive status register */
  19 #define EL_RXC          0x6     /* Receive command register */
  20 #define EL_TXS          0x7     /* Transmit status register */
  21 #define EL_TXC          0x7     /* Transmit command register */
  22 #define EL_GPBL         0x8     /* GP buffer ptr low byte */
  23 #define EL_GPBH         0x9     /* GP buffer ptr high byte */
  24 #define EL_RBL          0xa     /* Receive buffer ptr low byte */
  25 #define EL_RBC          0xa     /* Receive buffer clear */
  26 #define EL_RBH          0xb     /* Receive buffer ptr high byte */
  27 #define EL_EAW          0xc     /* Ethernet address window */
  28 #define EL_AS           0xe     /* Auxillary status register */
  29 #define EL_AC           0xe     /* Auxillary command register */
  30 #define EL_BUF          0xf     /* Data buffer */
  31
  32 /* Receive status register bits */
  33 #define EL_RXS_OFLOW    0x01    /* Overflow error */
  34 #define EL_RXS_FCS      0x02    /* FCS error */
  35 #define EL_RXS_DRIB     0x04    /* Dribble error */
  36 #define EL_RXS_SHORT    0x08    /* Short frame */
  37 #define EL_RXS_NOFLOW   0x10    /* No overflow */
  38 #define EL_RXS_GOOD     0x20    /* Received good frame */
  39 #define EL_RXS_STALE    0x80    /* Stale receive status */
  40
  41 /* Receive command register bits */
  42 #define EL_RXC_DISABLE  0x00    /* Receiver disabled */
  43 #define EL_RXC_DOFLOW   0x01    /* Detect overflow */
  44 #define EL_RXC_DFCS     0x02    /* Detect FCS errs */
  45 #define EL_RXC_DDRIB    0x04    /* Detect dribble errors */
  46 #define EL_RXC_DSHORT   0x08    /* Detect short frames */
  47 #define EL_RXC_DNOFLOW  0x10    /* Detect frames w/o overflow ??? */
  48 #define EL_RXC_AGF      0x20    /* Accept Good Frames */
  49 #define EL_RXC_PROMISC  0x40    /* Promiscuous mode */
  50 #define EL_RXC_ABROAD   0x80    /* Accept address, broadcast */
  51 #define EL_RXC_AMULTI   0xc0    /* Accept address, multicast */
  52
  53 /* Transmit status register bits */
  54 #define EL_TXS_UFLOW    0x01    /* Underflow */
  55 #define EL_TXS_COLL     0x02    /* Collision */
  56 #define EL_TXS_COLL16   0x04    /* Collision 16 */
  57 #define EL_TXS_READY    0x08    /* Ready for new frame */
  58
  59 /* Transmit command register bits */
  60 #define EL_TXC_DUFLOW   0x01    /* Detect underflow */
  61 #define EL_TXC_DCOLL    0x02    /* Detect collisions */
  62 #define EL_TXC_DCOLL16  0x04    /* Detect collision 16 */
  63 #define EL_TXC_DSUCCESS 0x08    /* Detect success */
  64
  65 /* Auxillary status register bits */
  66 #define EL_AS_RXBUSY    0x01    /* Receive busy */
  67 #define EL_AS_DMADONE   0x10    /* DMA finished */
  68 #define EL_AS_TXBUSY    0x80    /* Transmit busy */
  69
  70 /* Auxillary command register bits */
  71 #define EL_AC_HOST      0x00    /* System bus can access buffer */
  72 #define EL_AC_IRQE      0x01    /* IRQ enable */
  73 #define EL_AC_TXBAD     0x02    /* Transmit frames with bad FCS */
  74 #define EL_AC_TXFRX     0x04    /* Transmit followed by receive */
  75 #define EL_AC_RX        0x08    /* Receive */
  76 #define EL_AC_LB        0x0c    /* Loopback */
  77 #define EL_AC_DRQ       0x20    /* DMA request */
  78 #define EL_AC_RIDE      0x40    /* DRQ and IRQ enabled */
  79 #define EL_AC_RESET     0x80    /* Reset */
  80
  81 /* Packet buffer size */
  82 #define EL_BUFSIZ       2048