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