* Copyright (c) 1991 The Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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
* from: @(#)wdreg.h 7.1 (Berkeley) 5/9/91
* $Id: wxreg.h,v 1.1 1993/10/26 22:26:39 nate Exp $
* 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 WDCTL_4BIT 0x8 /* use four head bits (wd1003) */
#define WDCTL_RST 0x4 /* reset the controller */
#define WDCTL_IDS 0x2 /* disable controller interrupts */
#define wd_digin 0x207 /* disk controller input(via 1015) (R)*/
#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_RESTORE 0x10 /* disk restore code -- resets cntlr */
#define WDCC_READ 0x20 /* disk read code */
#define WDCC_WRITE 0x30 /* disk write code */
#define WDCC__LONG 0x02 /* modifier -- access ecc bytes */
#define WDCC__NORETRY 0x01 /* modifier -- no retrys */
#define WDCC_FORMAT 0x50 /* disk format code */
#define WDCC_DIAGNOSE 0x90 /* controller diagnostic */
#define WDCC_IDC 0x91 /* initialize drive command */
#define WDCC_EXTDCMD 0xE0 /* send extended command */
#define WDCC_READP 0xEC /* read parameters from controller */
#define WDCC_CACHEC 0xEF /* cache control */
#define WD_STEP 0 /* winchester- default 35us step */
#define WDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */
* read parameters command returns this:
short wdp_config
; /* general configuration */
short wdp_fixedcyl
; /* number of non-removable cylinders */
short wdp_removcyl
; /* number of removable cylinders */
short wdp_heads
; /* number of heads */
short wdp_unfbytespertrk
; /* number of unformatted bytes/track */
short wdp_unfbytes
; /* number of unformatted bytes/sector */
short wdp_sectors
; /* number of sectors */
short wdp_minisg
; /* minimum bytes in inter-sector gap*/
short wdp_minplo
; /* minimum bytes in postamble */
short wdp_vendstat
; /* number of words of vendor status */
char wdp_cnsn
[20]; /* controller serial number */
short wdp_cntype
; /* controller type */
#define WDTYPE_SINGLEPORTSECTOR 1 /* single port, single sector buffer */
#define WDTYPE_DUALPORTMULTI 2 /* dual port, multiple sector buffer */
#define WDTYPE_DUALPORTMULTICACHE 3 /* above plus track cache */
short wdp_cnsbsz
; /* sector buffer size, in sectors */
short wdp_necc
; /* ecc bytes appended */
char wdp_rev
[8]; /* firmware revision */
char wdp_model
[40]; /* model name */
short wdp_nsecperint
; /* sectors per interrupt */
short wdp_usedmovsd
; /* can use double word read/write? */
void wdstrategy(struct buf
*bp
);
int wdopen(dev_t dev
, int flags
, int fmt
, struct proc
*p
);
int wdclose(dev_t dev
, int flags
, int fmt
);
int wdioctl(dev_t dev
, int cmd
, caddr_t addr
, int flag
);
int wdformat(struct buf
*bp
);
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