The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/i82586reg.h

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    1 /*      $OpenBSD: i82586reg.h,v 1.3 2003/10/21 18:58:49 jmc Exp $       */
    2 /*      $NetBSD: i82586reg.h,v 1.5 1995/04/04 01:59:34 mycroft Exp $    */
    3 
    4 /*-
    5  * Copyright (c) 1992, University of Vermont and State Agricultural College.
    6  * Copyright (c) 1992, Garrett A. Wollman.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by the University of
   20  *      Vermont and State Agricultural College and Garrett A. Wollman.
   21  * 4. Neither the name of the University nor the name of the author
   22  *    may be used to endorse or promote products derived from this software
   23  *    without specific prior written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR AUTHOR BE LIABLE
   29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   35  * SUCH DAMAGE.
   36  */
   37 
   38 /*
   39  * Intel 82586 Ethernet chip
   40  * Register, bit, and structure definitions.
   41  *
   42  * Written by GAW with reference to the Clarkson Packet Driver code for this
   43  * chip written by Russ Nelson and others.
   44  */
   45 
   46 struct ie_en_addr {
   47         u_char data[6];
   48 };
   49 
   50 /*
   51  * This is the master configuration block.  It tells the hardware where all
   52  * the rest of the stuff is.
   53  */
   54 struct ie_sys_conf_ptr {
   55         u_short mbz;                    /* must be zero */
   56         u_char ie_bus_use;              /* true if 8-bit only */
   57         u_char mbz2[5];                 /* must be zero */
   58         caddr_t ie_iscp_ptr;            /* 24-bit physaddr of ISCP */
   59 };
   60 
   61 /*
   62  * Note that this is wired in hardware; the SCP is always located here, no
   63  * matter what.
   64  */
   65 #define IE_SCP_ADDR 0xfffff4
   66 
   67 /*
   68  * The tells the hardware where all the rest of the stuff is, too.
   69  * FIXME: some of these should be re-commented after we figure out their
   70  * REAL function.
   71  */
   72 struct ie_int_sys_conf_ptr {
   73         u_char ie_busy;                 /* zeroed after init */
   74         u_char mbz;
   75         u_short ie_scb_offset;          /* 16-bit physaddr of next struct */
   76         caddr_t ie_base;                /* 24-bit physaddr for all 16-bit vars */
   77 };
   78 
   79 /*
   80  * This FINALLY tells the hardware what to do and where to put it.
   81  */
   82 struct ie_sys_ctl_block {
   83         u_short ie_status;              /* status word */
   84         u_short ie_command;             /* command word */
   85         u_short ie_command_list;        /* 16-pointer to command block list */
   86         u_short ie_recv_list;           /* 16-pointer to receive frame list */
   87         u_short ie_err_crc;             /* CRC errors */
   88         u_short ie_err_align;           /* Alignment errors */
   89         u_short ie_err_resource;        /* Resource errors */
   90         u_short ie_err_overrun;         /* Overrun errors */
   91 };
   92 
   93 /* Command values */
   94 #define IE_RU_COMMAND   0x0070  /* mask for RU command */
   95 #define IE_RU_NOP       0       /* for completeness */
   96 #define IE_RU_START     0x0010  /* start receive unit command */
   97 #define IE_RU_ENABLE    0x0020  /* enable receiver command */
   98 #define IE_RU_DISABLE   0x0030  /* disable receiver command */
   99 #define IE_RU_ABORT     0x0040  /* abort current receive operation */
  100 
  101 #define IE_CU_COMMAND   0x0700  /* mask for CU command */
  102 #define IE_CU_NOP       0       /* included for completeness */
  103 #define IE_CU_START     0x0100  /* do-command command */
  104 #define IE_CU_RESUME    0x0200  /* resume a suspended cmd list */
  105 #define IE_CU_STOP      0x0300  /* SUSPEND was already taken */
  106 #define IE_CU_ABORT     0x0400  /* abort current command */
  107 
  108 #define IE_ACK_COMMAND  0xf000  /* mask for ACK command */
  109 #define IE_ACK_CX       0x8000  /* ack IE_ST_CX */
  110 #define IE_ACK_FR       0x4000  /* ack IE_ST_FR */
  111 #define IE_ACK_CNA      0x2000  /* ack IE_ST_CNA */
  112 #define IE_ACK_RNR      0x1000  /* ack IE_ST_RNR */
  113 
  114 #define IE_ACTION_COMMAND(x) (((x) & IE_CU_COMMAND) == IE_CU_START)
  115                                 /* is this command an action command? */
  116 
  117 /* Status values */
  118 #define IE_ST_WHENCE    0xf000  /* mask for cause of interrupt */
  119 #define IE_ST_CX        0x8000  /* command with I bit completed */
  120 #define IE_ST_FR        0x4000  /* frame received */
  121 #define IE_ST_CNA       0x2000  /* all commands completed */
  122 #define IE_ST_RNR       0x1000  /* receive not ready */
  123 
  124 #define IE_CU_STATUS    0x700   /* mask for command unit status */
  125 #define IE_CU_ACTIVE    0x200   /* command unit is active */
  126 #define IE_CU_SUSPEND   0x100   /* command unit is suspended */
  127 
  128 #define IE_RU_STATUS    0x70    /* mask for receiver unit status */
  129 #define IE_RU_SUSPEND   0x10    /* receiver is suspended */
  130 #define IE_RU_NOSPACE   0x20    /* receiver has no resources */
  131 #define IE_RU_READY     0x40    /* receiver is ready */
  132 
  133 /*
  134  * This is filled in partially by the chip, partially by us.
  135  */
  136 struct ie_recv_frame_desc {
  137         u_short ie_fd_status;           /* status for this frame */
  138         u_short ie_fd_last;             /* end of frame list flag */
  139         u_short ie_fd_next;             /* 16-pointer to next RFD */
  140         u_short ie_fd_buf_desc;         /* 16-pointer to list of buffer desc's */
  141         struct ie_en_addr dest;         /* destination ether */
  142         struct ie_en_addr src;          /* source ether */
  143         u_short ie_length;              /* 802 length/Ether type */
  144         u_short mbz;                    /* must be zero */
  145 };
  146 
  147 #define IE_FD_LAST      0x8000  /* last rfd in list */
  148 #define IE_FD_SUSP      0x4000  /* suspend RU after receipt */
  149 
  150 #define IE_FD_COMPLETE  0x8000  /* frame is complete */
  151 #define IE_FD_BUSY      0x4000  /* frame is busy */
  152 #define IE_FD_OK        0x2000  /* frame is bad */
  153 #define IE_FD_RNR       0x0200  /* receiver out of resources here */
  154 
  155 /*
  156  * linked list of buffers...
  157  */
  158 struct ie_recv_buf_desc {
  159         u_short ie_rbd_actual;          /* status for this buffer */
  160         u_short ie_rbd_next;            /* 16-pointer to next RBD */
  161         caddr_t ie_rbd_buffer;          /* 24-pointer to buffer for this RBD */
  162         u_short ie_rbd_length;          /* length of the buffer */
  163         u_short mbz;                    /* must be zero */
  164 };
  165 
  166 #define IE_RBD_LAST     0x8000  /* last buffer */
  167 #define IE_RBD_USED     0x4000  /* this buffer has data */
  168 /*
  169  * All commands share this in common.
  170  */
  171 struct ie_cmd_common {
  172         u_short ie_cmd_status;          /* status of this command */
  173         u_short ie_cmd_cmd;             /* command word */
  174         u_short ie_cmd_link;            /* link to next command */
  175 };
  176 
  177 #define IE_STAT_COMPL   0x8000  /* command is completed */
  178 #define IE_STAT_BUSY    0x4000  /* command is running now */
  179 #define IE_STAT_OK      0x2000  /* command completed successfully */
  180 #define IE_STAT_ABORT   0x1000  /* command was aborted */
  181 
  182 #define IE_CMD_NOP      0x0000  /* NOP */
  183 #define IE_CMD_IASETUP  0x0001  /* initial address setup */
  184 #define IE_CMD_CONFIG   0x0002  /* configure command */
  185 #define IE_CMD_MCAST    0x0003  /* multicast setup command */
  186 #define IE_CMD_XMIT     0x0004  /* transmit command */
  187 #define IE_CMD_TDR      0x0005  /* time-domain reflectometer command */
  188 #define IE_CMD_DUMP     0x0006  /* dump command */
  189 #define IE_CMD_DIAGNOSE 0x0007  /* diagnostics command */
  190 
  191 #define IE_CMD_LAST     0x8000  /* this is the last command in the list */
  192 #define IE_CMD_SUSPEND  0x4000  /* suspend CU after this command */
  193 #define IE_CMD_INTR     0x2000  /* post an interrupt after completion */
  194 
  195 /*
  196  * This is the command to transmit a frame.
  197  */
  198 struct ie_xmit_cmd {
  199         struct ie_cmd_common com;       /* common part */
  200 #define ie_xmit_status com.ie_cmd_status
  201 
  202         u_short ie_xmit_desc;           /* 16-pointer to buffer descriptor */
  203         struct ie_en_addr ie_xmit_addr; /* destination address */
  204 
  205         u_short ie_xmit_length;         /* 802.3 length/Ether type field */
  206 };
  207 
  208 #define IE_XS_MAXCOLL   0x000f  /* number of collisions during transmit */
  209 #define IE_XS_EXCMAX    0x0020  /* exceeded maximum number of collisions */
  210 #define IE_XS_SQE       0x0040  /* SQE positive */
  211 #define IE_XS_DEFERRED  0x0080  /* transmission deferred */
  212 #define IE_XS_UNDERRUN  0x0100  /* DMA underrun */
  213 #define IE_XS_LOSTCTS   0x0200  /* Lost CTS */
  214 #define IE_XS_NOCARRIER 0x0400  /* No Carrier */
  215 #define IE_XS_LATECOLL  0x0800  /* Late collision */
  216 
  217 /*
  218  * This is a buffer descriptor for a frame to be transmitted.
  219  */
  220 
  221 struct ie_xmit_buf {
  222         u_short ie_xmit_flags;          /* see below */
  223         u_short ie_xmit_next;           /* 16-pointer to next desc. */
  224         caddr_t ie_xmit_buf;            /* 24-pointer to the actual buffer */
  225 };
  226 
  227 #define IE_XMIT_LAST 0x8000     /* this TBD is the last one */
  228 /* The rest of the `flags' word is actually the length. */
  229 
  230 /*
  231  * Multicast setup command.
  232  */
  233 
  234 #define MAXMCAST 250            /* must fit in transmit buffer */
  235 
  236 struct ie_mcast_cmd {
  237         struct ie_cmd_common com;       /* common part */
  238 #define ie_mcast_status com.ie_cmd_status
  239 
  240         u_short ie_mcast_bytes; /* size (in bytes) of multicast addresses */
  241         struct ie_en_addr ie_mcast_addrs[MAXMCAST + 1]; /* space for them */
  242 };
  243 
  244 /*
  245  * Time Domain Reflectometer command.
  246  */
  247 
  248 struct ie_tdr_cmd {
  249         struct ie_cmd_common com;       /* common part */
  250 #define ie_tdr_status com.ie_cmd_status
  251 
  252         u_short ie_tdr_time;            /* error bits and time */
  253 };
  254 
  255 #define IE_TDR_SUCCESS  0x8000  /* TDR succeeded without error */
  256 #define IE_TDR_XCVR     0x4000  /* detected a transceiver problem */
  257 #define IE_TDR_OPEN     0x2000  /* detected an open */
  258 #define IE_TDR_SHORT    0x1000  /* TDR detected a short */
  259 #define IE_TDR_TIME     0x07ff  /* mask for reflection time */
  260 
  261 /*
  262  * Initial Address Setup command
  263  */
  264 struct ie_iasetup_cmd {
  265         struct ie_cmd_common com;
  266 #define ie_iasetup_status com.ie_cmd_status
  267 
  268         struct ie_en_addr ie_address;
  269 };
  270 
  271 /*
  272  * Configuration command
  273  */
  274 struct ie_config_cmd {
  275         struct ie_cmd_common com;       /* common part */
  276 #define ie_config_status com.ie_cmd_status
  277 
  278         u_char ie_config_count;         /* byte count (0x0c) */
  279         u_char ie_fifo;                 /* fifo (8) */
  280         u_char ie_save_bad;             /* save bad frames (0x40) */
  281         u_char ie_addr_len;             /* address length (0x2e) (AL-LOC == 1) */
  282         u_char ie_priority;             /* priority and backoff (0x0) */
  283         u_char ie_ifs;                  /* inter-frame spacing (0x60) */
  284         u_char ie_slot_low;             /* slot time, LSB (0x0) */
  285         u_char ie_slot_high;            /* slot time, MSN, and retries (0xf2) */
  286         u_char ie_promisc;              /* 1 if promiscuous, else 0 */
  287         u_char ie_crs_cdt;              /* CSMA/CD parameters (0x0) */
  288         u_char ie_min_len;              /* min frame length (0x40) */
  289         u_char ie_junk;                 /* stuff for 82596 (0xff) */
  290 };

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