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Annotation of Net2/arch/i386/isa/wdreg.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * William Jolitz.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms, with or without
        !             9:  * modification, are permitted provided that the following conditions
        !            10:  * are met:
        !            11:  * 1. Redistributions of source code must retain the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer.
        !            13:  * 2. Redistributions in binary form must reproduce the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer in the
        !            15:  *    documentation and/or other materials provided with the distribution.
        !            16:  * 3. All advertising materials mentioning features or use of this software
        !            17:  *    must display the following acknowledgement:
        !            18:  *     This product includes software developed by the University of
        !            19:  *     California, Berkeley and its contributors.
        !            20:  * 4. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)wdreg.h     7.1 (Berkeley) 5/9/91
        !            37:  */
        !            38: 
        !            39: /*
        !            40:  * Disk Controller register definitions.
        !            41:  */
        !            42: #define        wd_data         0x0             /* data register (R/W - 16 bits) */
        !            43: #define wd_error       0x1             /* error register (R) */
        !            44: #define        wd_precomp      wd_error        /* write precompensation (W) */
        !            45: #define        wd_seccnt       0x2             /* sector count (R/W) */
        !            46: #define        wd_sector       0x3             /* first sector number (R/W) */
        !            47: #define        wd_cyl_lo       0x4             /* cylinder address, low byte (R/W) */
        !            48: #define        wd_cyl_hi       0x5             /* cylinder address, high byte (R/W)*/
        !            49: #define        wd_sdh          0x6             /* sector size/drive/head (R/W)*/
        !            50: #define        wd_command      0x7             /* command register (W)  */
        !            51: #define        wd_status wd_command            /* immediate status (R)  */
        !            52: 
        !            53: #define        wd_altsts       0x206    /*alternate fixed disk status(via 1015) (R)*/
        !            54: #define        wd_ctlr         0x206    /*fixed disk controller control(via 1015) (W)*/
        !            55: #define        wd_digin        0x207    /* disk controller input(via 1015) (R)*/
        !            56: 
        !            57: /*
        !            58:  * Status Bits.
        !            59:  */
        !            60: #define        WDCS_BUSY       0x80            /* Controller busy bit. */
        !            61: #define        WDCS_READY      0x40            /* Selected drive is ready */
        !            62: #define        WDCS_WRTFLT     0x20            /* Write fault */
        !            63: #define        WDCS_SEEKCMPLT  0x10            /* Seek complete */
        !            64: #define        WDCS_DRQ        0x08            /* Data request bit. */
        !            65: #define        WDCS_ECCCOR     0x04            /* ECC correction made in data */
        !            66: #define        WDCS_INDEX      0x02            /* Index pulse from selected drive */
        !            67: #define        WDCS_ERR        0x01            /* Error detect bit. */
        !            68: 
        !            69: #define WDCS_BITS      "\020\010busy\006rdy\006wrtflt\005seekdone\004drq\003ecc_cor\002index\001err"
        !            70: 
        !            71: #define WDERR_BITS     "\020\010badblk\007uncorr\006id_crc\005no_id\003abort\002tr000\001no_dam"
        !            72: 
        !            73: /*
        !            74:  * Commands for Disk Controller.
        !            75:  */
        !            76: #define        WDCC_READ       0x20            /* disk read code */
        !            77: #define        WDCC_WRITE      0x30            /* disk write code */
        !            78: #define        WDCC_RESTORE    0x10            /* disk restore code -- resets cntlr */
        !            79: #define        WDCC_FORMAT     0x50            /* disk format code */
        !            80: 
        !            81: #define        WD_STEP         0               /* winchester- default 35us step */
        !            82: 
        !            83: #define        WDSD_IBM        0xa0            /* forced to 512 byte sector, ecc */
        !            84: 

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