Annotation of sys/arch/mvme68k/stand/netboot/i82586.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: i82586.h,v 1.3 1996/04/28 10:49:21 deraadt Exp $ */
! 2:
! 3: /*-
! 4: * Copyright (c) 1995 Theo de Raadt
! 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: * the only actual IE registers.
! 51: */
! 52: struct iereg {
! 53: u_short ie_porthigh;
! 54: u_short ie_portlow;
! 55: u_long ie_attention;
! 56: };
! 57: #define IE_PORT_NEWSCP 0x00000002
! 58: #define IE_PORT_RESET 0x00000000
! 59:
! 60: /*
! 61: * This is the master configuration block. It tells the hardware where
! 62: * all the rest of the stuff is.
! 63: */
! 64: struct ie_scp {
! 65: u_char mbz1[3]; /* must be zero */
! 66: u_char scp_sysbus; /* true if 8-bit only */
! 67: u_char mbz2[4]; /* must be zero */
! 68: u_short scp_iscp_low; /* 24-bit physaddr of ISCP */
! 69: u_char mbz3[1];
! 70: u_char scp_iscp_high; /* the rest of the physaddr.. */
! 71: };
! 72: /*
! 73: * The tells the hardware where all the rest of the stuff is, too.
! 74: * FIXME: some of these should be re-commented after we figure out their
! 75: * REAL function.
! 76: */
! 77: struct ie_iscp {
! 78: u_char mbz1[1];
! 79: u_char iscp_busy; /* zeroed after init */
! 80: u_short iscp_scboffset; /* 16-bit physaddr of next struct */
! 81: u_short iscp_base_low; /* 24-bit physaddr for all 16-bit vars */
! 82: u_char mbz2[1];
! 83: u_char iscp_base_high; /* rest of physaddr ... */
! 84: };
! 85: /*
! 86: * This FINALLY tells the hardware what to do and where to put it.
! 87: */
! 88: struct ie_scb {
! 89: u_short ie_status; /* status word */
! 90: u_short ie_command; /* command word */
! 91: u_short ie_command_list;/* 16-pointer to command block list */
! 92: u_short ie_recv_list; /* 16-pointer to receive frame list */
! 93: u_short ie_err_crc; /* CRC errors */
! 94: u_short ie_err_align; /* Alignment errors */
! 95: u_short ie_err_resource;/* Resource errors */
! 96: u_short ie_err_overrun; /* Overrun errors */
! 97: };
! 98: /* Command values */
! 99: #define IE_RU_COMMAND 0x0070 /* mask for RU command */
! 100: #define IE_RU_NOP 0 /* for completeness */
! 101: #define IE_RU_START 0x0010 /* start receive unit command */
! 102: #define IE_RU_ENABLE 0x0020 /* enable receiver command */
! 103: #define IE_RU_DISABLE 0x0030 /* disable receiver command */
! 104: #define IE_RU_ABORT 0x0040 /* abort current receive operation */
! 105:
! 106: #define IE_CU_COMMAND 0x0700 /* mask for CU command */
! 107: #define IE_CU_NOP 0 /* included for completeness */
! 108: #define IE_CU_START 0x0100 /* do-command command */
! 109: #define IE_CU_RESUME 0x0200 /* resume a suspended cmd list */
! 110: #define IE_CU_STOP 0x0300 /* SUSPEND was already taken */
! 111: #define IE_CU_ABORT 0x0400 /* abort current command */
! 112:
! 113: #define IE_ACK_COMMAND 0xf000 /* mask for ACK command */
! 114: #define IE_ACK_CX 0x8000 /* ack IE_ST_DONE */
! 115: #define IE_ACK_FR 0x4000 /* ack IE_ST_RECV */
! 116: #define IE_ACK_CNA 0x2000 /* ack IE_ST_ALLDONE */
! 117: #define IE_ACK_RNR 0x1000 /* ack IE_ST_RNR */
! 118:
! 119: #define IE_ACTION_COMMAND(x) (((x) & IE_CU_COMMAND) == IE_CU_START)
! 120: /* is this command an action command? */
! 121:
! 122: /* Status values */
! 123: #define IE_ST_WHENCE 0xf000 /* mask for cause of interrupt */
! 124: #define IE_ST_DONE 0x8000 /* command with I bit completed */
! 125: #define IE_ST_RECV 0x4000 /* frame received */
! 126: #define IE_ST_ALLDONE 0x2000 /* all commands completed */
! 127: #define IE_ST_RNR 0x1000 /* receive not ready */
! 128:
! 129: #define IE_CU_STATUS 0x700 /* mask for command unit status */
! 130: #define IE_CU_ACTIVE 0x200 /* command unit is active */
! 131: #define IE_CU_SUSPEND 0x100 /* command unit is suspended */
! 132:
! 133: #define IE_RU_STATUS 0x70 /* mask for receiver unit status */
! 134: #define IE_RU_SUSPEND 0x10 /* receiver is suspended */
! 135: #define IE_RU_NOSPACE 0x20 /* receiver has no resources */
! 136: #define IE_RU_READY 0x40 /* receiver is ready */
! 137:
! 138: /*
! 139: * This is filled in partially by the chip, partially by us.
! 140: */
! 141: struct ie_recv_frame_desc {
! 142: u_short ie_fd_status; /* status for this frame */
! 143: u_short ie_fd_last; /* end of frame list flag */
! 144: u_short ie_fd_next; /* 16-pointer to next RFD */
! 145: u_short ie_fd_buf_desc; /* 16-pointer to list of buffer desc's */
! 146: struct ie_en_addr dest; /* destination ether */
! 147: struct ie_en_addr src; /* source ether */
! 148: u_short ie_length; /* 802 length/Ether type */
! 149: u_short mbz; /* must be zero */
! 150: };
! 151: #define IE_FD_LAST 0x8000 /* last rfd in list */
! 152: #define IE_FD_SUSP 0x4000 /* suspend RU after receipt */
! 153:
! 154: #define IE_FD_COMPLETE 0x8000 /* frame is complete */
! 155: #define IE_FD_BUSY 0x4000 /* frame is busy */
! 156: #define IE_FD_OK 0x2000 /* frame is bad */
! 157: #define IE_FD_RNR 0x0200 /* receiver out of resources here */
! 158:
! 159: /*
! 160: * linked list of buffers...
! 161: */
! 162: struct ie_recv_buf_desc {
! 163: u_short ie_rbd_actual; /* status for this buffer */
! 164: u_short ie_rbd_next; /* 16-pointer to next RBD */
! 165: u_short ie_rbd_buffer_low; /* 24-pointer to buffer for this RBD */
! 166: u_short ie_rbd_buffer_high; /* 24-pointer to buffer for this RBD */
! 167: u_short ie_rbd_length; /* length of the buffer */
! 168: u_short mbz; /* must be zero */
! 169: };
! 170: #define IE_RBD_LAST 0x8000 /* last buffer */
! 171: #define IE_RBD_USED 0x4000 /* this buffer has data */
! 172: /*
! 173: * All commands share this in common.
! 174: */
! 175: struct ie_cmd_common {
! 176: u_short ie_cmd_status; /* status of this command */
! 177: u_short ie_cmd_cmd; /* command word */
! 178: u_short ie_cmd_link; /* link to next command */
! 179: };
! 180: #define IE_STAT_COMPL 0x8000 /* command is completed */
! 181: #define IE_STAT_BUSY 0x4000 /* command is running now */
! 182: #define IE_STAT_OK 0x2000 /* command completed successfully */
! 183: #define IE_STAT_ABORT 0x1000 /* command was aborted */
! 184:
! 185:
! 186: #define IE_CMD_NOP 0x0000 /* NOP */
! 187: #define IE_CMD_IASETUP 0x0001 /* initial address setup */
! 188: #define IE_CMD_CONFIG 0x0002 /* configure command */
! 189: #define IE_CMD_MCAST 0x0003 /* multicast setup command */
! 190: #define IE_CMD_XMIT 0x0004 /* transmit command */
! 191: #define IE_CMD_TDR 0x0005 /* time-domain reflectometer command */
! 192: #define IE_CMD_DUMP 0x0006 /* dump command */
! 193: #define IE_CMD_DIAGNOSE 0x0007 /* diagnostics command */
! 194:
! 195: #define IE_CMD_LAST 0x8000 /* this is the last command in the list */
! 196: #define IE_CMD_SUSPEND 0x4000 /* suspend CU after this command */
! 197: #define IE_CMD_INTR 0x2000 /* post an interrupt after completion */
! 198:
! 199: /*
! 200: * This is the command to transmit a frame.
! 201: */
! 202: struct ie_xmit_cmd {
! 203: struct ie_cmd_common com; /* common part */
! 204: #define ie_xmit_status com.ie_cmd_status
! 205:
! 206: u_short ie_xmit_desc; /* 16-pointer to buffer descriptor */
! 207: struct ie_en_addr ie_xmit_addr; /* destination address */
! 208:
! 209: u_short ie_xmit_length; /* 802.3 length/Ether type field */
! 210: };
! 211: #define IE_XS_MAXCOLL 0x000f /* number of collisions during transmit */
! 212: #define IE_XS_EXCMAX 0x0020 /* exceeded maximum number of collisions */
! 213: #define IE_XS_SQE 0x0040 /* SQE positive */
! 214: #define IE_XS_DEFERRED 0x0080 /* transmission deferred */
! 215: #define IE_XS_UNDERRUN 0x0100 /* DMA underrun */
! 216: #define IE_XS_LOSTCTS 0x0200 /* Lost CTS */
! 217: #define IE_XS_NOCARRIER 0x0400 /* No Carrier */
! 218:
! 219: /*
! 220: * This is a buffer descriptor for a frame to be transmitted.
! 221: */
! 222:
! 223: struct ie_xmit_buf {
! 224: u_short ie_xmit_flags; /* see below */
! 225: u_short ie_xmit_next; /* 16-pointer to next desc. */
! 226: u_short ie_xmit_buf_low;/* 24-pointer to the actual buffer */
! 227: u_short ie_xmit_buf_high; /* 24-pointer to the actual buffer */
! 228: };
! 229: #define IE_XMIT_LAST 0x8000 /* this TBD is the last one */
! 230: /* The rest of the `flags' word is actually the length. */
! 231:
! 232: /*
! 233: * Multicast setup command.
! 234: */
! 235:
! 236: #define MAXMCAST 250 /* must fit in transmit buffer */
! 237:
! 238: struct ie_mcast_cmd {
! 239: struct ie_cmd_common com; /* common part */
! 240: #define ie_mcast_status com.ie_cmd_status
! 241:
! 242: u_short ie_mcast_bytes; /* size (in bytes) of multicast addresses */
! 243: struct ie_en_addr ie_mcast_addrs[MAXMCAST + 1]; /* space for them */
! 244: };
! 245: /*
! 246: * Time Domain Reflectometer command.
! 247: */
! 248:
! 249: struct ie_tdr_cmd {
! 250: struct ie_cmd_common com; /* common part */
! 251: #define ie_tdr_status com.ie_cmd_status
! 252:
! 253: u_short ie_tdr_time; /* error bits and time */
! 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: * Configuration command
! 272: */
! 273: struct ie_config_cmd {
! 274: struct ie_cmd_common com; /* common part */
! 275: #define ie_config_status com.ie_cmd_status
! 276:
! 277: u_char ie_config_count;/* byte count (0x0c) */
! 278: u_char ie_fifo; /* fifo (8) */
! 279: u_char ie_save_bad; /* save bad frames (0x40) */
! 280: u_char ie_addr_len; /* address length (0x2e) (AL-LOC == 1) */
! 281: u_char ie_priority; /* priority and backoff (0x0) */
! 282: u_char ie_ifs; /* inter-frame spacing (0x60) */
! 283: u_char ie_slot_low; /* slot time, LSB (0x0) */
! 284: u_char ie_slot_high; /* slot time, MSN, and retries (0xf2) */
! 285: u_char ie_promisc; /* 1 if promiscuous, else 0 */
! 286: u_char ie_crs_cdt; /* CSMA/CD parameters (0x0) */
! 287: u_char ie_min_len; /* min frame length (0x40) */
! 288: u_char ie_junk; /* stuff for 82596 (0xff) */
! 289: };
! 290:
! 291: struct iemem {
! 292: volatile struct ie_scp im_scp;
! 293: u_char xx1[4];
! 294: volatile struct ie_iscp im_iscp;
! 295:
! 296: volatile struct ie_scb im_scb;
! 297: volatile struct ie_config_cmd im_cc;
! 298: volatile struct ie_iasetup_cmd im_ic;
! 299: volatile struct ie_recv_frame_desc im_rfd[NRXBUF];
! 300: volatile struct ie_recv_buf_desc im_rbd[NRXBUF];
! 301: volatile struct ie_xmit_cmd im_xc[NTXBUF];
! 302: volatile struct ie_xmit_buf im_xd[NTXBUF];
! 303: volatile u_char im_rxbuf[NRXBUF * IE_RBUF_SIZE];
! 304: volatile u_char im_txbuf[NTXBUF * ETHER_MAX_LEN];
! 305:
! 306: };
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to i82586.h CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / mvme68k / stand / netboot