projects / unix-history / blame
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|---|---|---|
| 7f3c30c6 WJ |
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 |