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Annotation of Gnu-Mach/i386/i386at/i82586.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:   Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
        !            28: Cupertino, California.
        !            29: 
        !            30:                All Rights Reserved
        !            31: 
        !            32:   Permission to use, copy, modify, and distribute this software and
        !            33: its documentation for any purpose and without fee is hereby
        !            34: granted, provided that the above copyright notice appears in all
        !            35: copies and that both the copyright notice and this permission notice
        !            36: appear in supporting documentation, and that the name of Olivetti
        !            37: not be used in advertising or publicity pertaining to distribution
        !            38: of the software without specific, written prior permission.
        !            39: 
        !            40:   OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
        !            41: INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
        !            42: IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
        !            43: CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
        !            44: LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
        !            45: NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
        !            46: WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            47: */
        !            48: 
        !            49: /*
        !            50:  * Defines for managing the status word of the 82586 cpu.  For details see
        !            51:  * the Intel LAN Component User's Manual starting at p. 2-14.
        !            52:  *
        !            53:  */
        !            54: 
        !            55: #define SCB_SW_INT     0xf000
        !            56: #define SCB_SW_CX      0x8000          /* CU finished w/ int. bit set */
        !            57: #define SCB_SW_FR      0x4000          /* RU finished receiving a frame */
        !            58: #define SCB_SW_CNA     0x2000          /* CU left active state */
        !            59: #define SCB_SW_RNR     0x1000          /* RU left ready state */
        !            60: 
        !            61: /* 
        !            62:  * Defines for managing the Command Unit Status portion of the 82586
        !            63:  * System Control Block.
        !            64:  *
        !            65:  */
        !            66: 
        !            67: #define SCB_CUS_IDLE   0x0000
        !            68: #define SCB_CUS_SUSPND 0x0100
        !            69: #define SCB_CUS_ACTV   0x0200
        !            70: 
        !            71: /* 
        !            72:  * Defines for managing the Receive Unit Status portion of the System
        !            73:  * Control Block.
        !            74:  *
        !            75:  */
        !            76: 
        !            77: #define SCB_RUS_IDLE   0x0000
        !            78: #define SCB_RUS_SUSPND 0x0010
        !            79: #define SCB_RUS_NORESRC 0x0020
        !            80: #define SCB_RUS_READY  0x0040
        !            81: 
        !            82: /*
        !            83:  * Defines that manage portions of the Command Word in the System Control
        !            84:  * Block of the 82586.  Below are the Interrupt Acknowledge Bits and their
        !            85:  * appropriate masks.
        !            86:  *
        !            87:  */
        !            88: 
        !            89: #define SCB_ACK_CX     0x8000
        !            90: #define SCB_ACK_FR     0x4000
        !            91: #define SCB_ACK_CNA    0x2000
        !            92: #define SCB_ACK_RNR    0x1000
        !            93: 
        !            94: /* 
        !            95:  * Defines for managing the Command Unit Control word, and the Receive
        !            96:  * Unit Control word.  The software RESET bit is also defined.
        !            97:  *
        !            98:  */
        !            99: 
        !           100: #define SCB_CU_STRT    0x0100
        !           101: #define SCB_CU_RSUM    0x0200
        !           102: #define SCB_CU_SUSPND  0x0300
        !           103: #define SCB_CU_ABRT    0x0400
        !           104: 
        !           105: #define SCB_RESET      0x0080
        !           106: 
        !           107: #define SCB_RU_STRT    0x0010
        !           108: #define SCB_RU_RSUM    0x0020
        !           109: #define SCB_RU_SUSPND  0x0030
        !           110: #define SCB_RU_ABRT    0x0040
        !           111: 
        !           112: 
        !           113: /*
        !           114:  * The following define Action Commands for the 82586 chip.
        !           115:  *
        !           116:  */
        !           117: 
        !           118: #define        AC_NOP          0x00
        !           119: #define AC_IASETUP     0x01
        !           120: #define AC_CONFIGURE   0x02
        !           121: #define AC_MCSETUP     0x03
        !           122: #define AC_TRANSMIT    0x04
        !           123: #define AC_TDR         0x05
        !           124: #define AC_DUMP                0x06
        !           125: #define AC_DIAGNOSE    0x07
        !           126: 
        !           127: 
        !           128: /*
        !           129:  * Defines for General Format for Action Commands, both Status Words, and
        !           130:  * Command Words.
        !           131:  *
        !           132:  */
        !           133: 
        !           134: #define AC_SW_C                0x8000
        !           135: #define AC_SW_B                0x4000
        !           136: #define AC_SW_OK       0x2000
        !           137: #define AC_SW_A                0x1000
        !           138: #define TC_CARRIER     0x0400
        !           139: #define TC_CLS         0x0200
        !           140: #define TC_DMA         0x0100
        !           141: #define TC_DEFER       0x0080
        !           142: #define TC_SQE         0x0040
        !           143: #define TC_COLLISION   0x0020
        !           144: #define        AC_CW_EL        0x8000
        !           145: #define AC_CW_S                0x4000
        !           146: #define AC_CW_I                0x2000
        !           147: 
        !           148: /*
        !           149:  * Specific defines for the transmit action command.
        !           150:  *
        !           151:  */
        !           152: 
        !           153: #define TBD_SW_EOF     0x8000
        !           154: #define TBD_SW_COUNT   0x3fff
        !           155: 
        !           156: /*
        !           157:  * Specific defines for the receive frame actions.
        !           158:  *
        !           159:  */
        !           160: 
        !           161: #define RBD_SW_EOF     0x8000
        !           162: #define RBD_SW_COUNT   0x3fff
        !           163: 
        !           164: #define RFD_DONE       0x8000
        !           165: #define RFD_BUSY       0x4000
        !           166: #define RFD_OK         0x2000
        !           167: #define RFD_CRC                0x0800
        !           168: #define RFD_ALN                0x0400
        !           169: #define RFD_RSC                0x0200
        !           170: #define RFD_DMA                0x0100
        !           171: #define RFD_SHORT      0x0080
        !           172: #define RFD_EOF                0x0040
        !           173: #define RFD_EL         0x8000
        !           174: #define RFD_SUSP       0x4000
        !           175: /*
        !           176:  * 82586 chip specific structure definitions.  For details, see the Intel
        !           177:  * LAN Components manual.
        !           178:  *
        !           179:  */
        !           180: 
        !           181: 
        !           182: typedef        struct  {
        !           183:        u_short scp_sysbus;
        !           184:        u_short scp_unused[2];
        !           185:        u_short scp_iscp;
        !           186:        u_short scp_iscp_base;
        !           187: } scp_t;
        !           188: 
        !           189: 
        !           190: typedef        struct  {
        !           191:        u_short iscp_busy;
        !           192:        u_short iscp_scb_offset;
        !           193:        u_short iscp_scb;
        !           194:        u_short iscp_scb_base;
        !           195: } iscp_t;
        !           196: 
        !           197: 
        !           198: typedef struct {
        !           199:        u_short scb_status;
        !           200:        u_short scb_command;
        !           201:        u_short scb_cbl_offset;
        !           202:        u_short scb_rfa_offset;
        !           203:        u_short scb_crcerrs;
        !           204:        u_short scb_alnerrs;
        !           205:        u_short scb_rscerrs;
        !           206:        u_short scb_ovrnerrs;
        !           207: } scb_t;
        !           208: 
        !           209: 
        !           210: typedef        struct  {
        !           211:        u_short tbd_offset;
        !           212:        u_char  dest_addr[6];
        !           213:        u_short length;
        !           214: } transmit_t;
        !           215: 
        !           216: 
        !           217: typedef        struct  {
        !           218:        u_short fifolim_bytecnt;
        !           219:        u_short addrlen_mode;
        !           220:        u_short linprio_interframe;
        !           221:        u_short slot_time;
        !           222:        u_short hardware;
        !           223:        u_short min_frame_len;
        !           224: } configure_t;
        !           225: 
        !           226: 
        !           227: typedef        struct  {
        !           228:        u_short ac_status;
        !           229:        u_short ac_command;
        !           230:        u_short ac_link_offset;
        !           231:        union   {
        !           232:                transmit_t      transmit;
        !           233:                configure_t     configure;
        !           234:                u_char          iasetup[6];
        !           235:        } cmd;
        !           236: } ac_t;
        !           237:        
        !           238: 
        !           239: typedef        struct  {
        !           240:        u_short act_count;
        !           241:        u_short next_tbd_offset;
        !           242:        u_short buffer_addr;
        !           243:        u_short buffer_base;
        !           244: } tbd_t;
        !           245: 
        !           246: 
        !           247: typedef        struct  {
        !           248:        u_short status;
        !           249:        u_short command;
        !           250:        u_short link_offset;
        !           251:        u_short rbd_offset;
        !           252:        u_char  destination[6];
        !           253:        u_char  source[6];
        !           254:        u_short length;
        !           255: } fd_t;
        !           256: 
        !           257: 
        !           258: typedef        struct  {
        !           259:        u_short status;
        !           260:        u_short next_rbd_offset;
        !           261:        u_short buffer_addr;
        !           262:        u_short buffer_base;
        !           263:        u_short size;
        !           264: } rbd_t;

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