usr/src/sys/i386/isa/if_ecreg.h

/*
 * Copyright (c) 1991, 1993
 *      The Regents of the University of California.  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.
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)if_ecreg.h  8.1 (Berkeley) 6/11/93
 */
/*
 * Device definitions for the i82586 generally and the 3com ec507
 * ISA bus ethernet controller.
 */
/*
 * Intermediate System Control Block pointer
 */
struct  ec_iscp {
        u_short busy;
        u_short scb_off;
        caddr_t scb_base;
};
/*
 * System Control Block
 */
struct  ec_scb {
        u_short status;
#define CX              0x8000
#define FR              0x4000
#define CNA             0x2000
#define RNR             0x1000
#define CU_STATE        0x700
#define CUS_IDLE        0x000
#define CUS_SUSPENDED   0x100
#define CUS_ACTIVE      0x200
#define RU_STATE        0x70
#define RUS_IDLE        0x00
#define RUS_SUSPENDED   0x10
#define RUS_OVERRUN     0x20
#define RUS_READY       0x40
        u_short command;
#define CU_NOP          0
#define CU_START        0x100
#define RU_NOP          0
#define RU_START        0x100
#define RU_ABORT        0x400
#define ACK_CX          0x8000
#define ACK_RX          0x4000
#define ACK_CNA         0x2000
#define ACK_RNR         0x1000
        u_short cbl_off;
        u_short rfa_off;
        struct  errors {
                u_short crc;
                u_short alignment;
                u_short resource;
                u_short overrun;
        } scb_errs;
};

/*
 * Individual Address Setup
 */
struct ec_iasetup {
        u_short com0;
#define COM0_A  0x1000
#define COM0_OK 0x2000
#define COM0_B  0x4000
#define COM0_C  0x8000
        u_short com1;
#define COM1_IASETUP    0x1
#define COM1_I  0x2000
#define COM1_S  0x4000
#define COM1_EL 0x8000
        u_short next_off;
        u_char  srcaddr[6];
};

/*
 * Load Multicast Addresses
 */

struct ec_mcsetup {
        u_short com0;
        u_short com1;
#define COM1_MCSETUP    0x3
        u_short next_off;
        u_short count;          /* number of bytes, 14 bits only */
        /* char mcaddrs[6];     /* white lie, data goes here */
};

/*
 * Transmit Command
 */
struct  ec_transmit {
        u_short com0;
#define COLLISIONS(p) (p->com0 & 0xf)
#define EXCOL           0x10    /* Excessive Collisions, Aborted */
#define HEARTBEAT       0x20    /* CDT signal monitored and OK (good) */
#define TXDEFFERED      0x40    /* ``due to Previous Link Activity'' */
#define DMALATE         0x80    /* DMA underrun */
#define NOCTS           0x100   /* Transmission stopped due to ... */
#define NOCARSENSE      0x200   /* Loss of Carrier sense during TX */
#define LATECOLL        0x400   /* Late Collision detected */
#define TXERRS          0x7d0   /* Various Bad Things */
        u_short com1;
#define COM1_TRANSMIT   0x4
        u_short next_off;
        u_short tbd_off;
        u_char  dstaddr[6];
        u_short proto;          /* Length for 802.3 */
/*
 * };    struct ec_tba {
 *
 * Transmit Buffer Descriptor
 * This really should be a separate structure,
 * but it will be convenient to lump them together.
 */
        u_short count;
        u_short next_tbd_off;
        caddr_t buffer;
};

/*
 * Receive Frame Descriptor
 */
struct  ec_rfd {
        u_short rfd0;
        u_short rfd1;
        u_short next_off;
        u_short rbd_off;
        struct  ether_header eh;
        u_short mbz;
/*
 * };   struct  ec_rbd {
 *
 * Receive Buffer Descriptor
 */
        u_short count;
#define RBD_EOF 0x8000
#define RBD_F   0x4000
        u_short next_rbd_off;
        caddr_t buffer;
        u_short size;
        u_short mbz2;
};

/*
 * Set Operating Parameters
 */
struct  ec_82586params {
        u_char  count;
        u_char  fifolimit;
        u_char  save_bad_frames;
        u_char  data1;          /* addr len, no src ins, lpbk, prmble */
        u_char  priority;
        u_char  ifspacing;
        u_char  mbz1;
        u_char  data2;          /* max restries, slot time high */
        u_char  promisc;        /* brddis, mnch/nrz, tnocr, crc16, bstf, pad */
#define M_PROMISC 1
#define M_TNOCR 8
        u_char  cdf_cds;        /* carrier detect/sense filter(length) & src */
        u_char  min_frame_len;
        u_char  mbz2[3];
};

struct  ec_configure {
        u_short com0;
        u_short com1;
#define COM1_CONFIGURE  0x2
        u_short next_off;
        struct ec_82586params modes;
};
#define ECMTU   1518
#define ECMINSIZE 64
#define NTXBUF  2
#define NRXBUF  8

struct  ec_mem {
        struct  ec_iscp iscp;
        struct  ec_scb scb;
        struct  ec_transmit tcom[NTXBUF];
        struct  ec_rfd rcom[NRXBUF];
        struct  ec_configure config;
        struct  ec_iasetup iasetup;
        struct  ec_mcsetup mcsetup;
        char    txbuf[NTXBUF][ECMTU];
        char    rxbuf[NRXBUF][ECMTU];
};

struct ec_ports {
        u_char  data[6];
        u_char  creg;
#define R_ECID  0x00
#define R_ETHER 0x01
#define R_REV   0x02
#define R_IEN   0x04
#define R_INT   0x08
#define R_LAD   0x10
#define R_LPB   0x20
#define R_CA    0x40
#define R_NORST 0x80
        u_char  mbz0[3];
        u_char  port_ic;
        u_char  port_ca;
        u_char  mbz1;
        u_char  rom_conf;
        u_char  ram_conf;
        u_char  int_conf;
};