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Annotation of Net2/arch/i386/isa/wdreg.h, revision 1.1.1.1

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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