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/* $NetBSD: wdreg.h,v 1.1 1996/01/31 23:25:18 mark Exp $ */
/*-
* 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 0x000 /* data register (R/W - 16 bits) */
#define wd_error 0x004 /* error register (R) */
#define wd_precomp 0x004 /* write precompensation (W) */
#define wd_features 0x004 /* features (W) */
#define wd_seccnt 0x008 /* sector count (R/W) */
#define wd_sector 0x00c /* first sector number (R/W) */
#define wd_cyl_lo 0x010 /* cylinder address, low byte (R/W) */
#define wd_cyl_hi 0x014 /* cylinder address, high byte (R/W) */
#define wd_sdh 0x018 /* sector size/drive/head (R/W) */
#define wd_command 0x01c /* command register (W) */
#define wd_status 0x01c /* immediate status (R) */
#define wd_altsts 0x818 /* alternate fixed disk status (via 1015) (R) */
#define wd_ctlr 0x818 /* fixed disk controller control (via 1015) (W) */
#define WDCTL_4BIT 0x08 /* use four head bits (wd1003) */
#define WDCTL_RST 0x04 /* reset the controller */
#define WDCTL_IDS 0x02 /* disable controller interrupts */
#define wd_digin 0x81c /* disk controller input (via 1015) (R) */
/*
* Status bits.
*/
#define WDCS_BSY 0x80 /* busy */
#define WDCS_DRDY 0x40 /* drive ready */
#define WDCS_DWF 0x20 /* drive write fault */
#define WDCS_DSC 0x10 /* drive seek complete */
#define WDCS_DRQ 0x08 /* data request */
#define WDCS_CORR 0x04 /* corrected data */
#define WDCS_IDX 0x02 /* index */
#define WDCS_ERR 0x01 /* error */
#define WDCS_BITS "\020\010bsy\007drdy\006dwf\005dsc\004drq\003corr\002idx\001err"
/*
* Error bits.
*/
#define WDCE_BBK 0x80 /* bad block detected */
#define WDCE_UNC 0x40 /* uncorrectable data error */
#define WDCE_MC 0x20 /* media changed */
#define WDCE_IDNF 0x10 /* id not found */
#define WDCE_ABRT 0x08 /* aborted command */
#define WDCE_MCR 0x04 /* media change requested */
#define WDCE_TK0NF 0x02 /* track 0 not found */
#define WDCE_AMNF 0x01 /* address mark not found */
#define WDERR_BITS "\020\010bbk\007unc\006mc\005idnf\004mcr\003abrt\002tk0nf\001amnf"
/*
* Commands for Disk Controller.
*/
#define WDCC_RECAL 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_IDP 0x91 /* initialize drive parameters */
#define WDCC_READMULTI 0xc4 /* read multiple */
#define WDCC_WRITEMULTI 0xc5 /* write multiple */
#define WDCC_SETMULTI 0xc6 /* set multiple mode */
#define WDCC_READDMA 0xc8 /* read with DMA */
#define WDCC_WRITEDMA 0xca /* write with DMA */
#define WDCC_ACKMC 0xdb /* acknowledge media change */
#define WDCC_LOCK 0xde /* lock drawer */
#define WDCC_UNLOCK 0xdf /* unlock drawer */
#define WDCC_IDENTIFY 0xec /* read parameters from controller */
#define WDCC_CACHEC 0xef /* cache control */
#define WDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */
#define WDSD_CHS 0x00 /* cylinder/head/sector addressing */
#define WDSD_LBA 0x40 /* logical block addressing */
#ifdef _KERNEL
/*
* read parameters command returns this:
*/
struct wdparams {
/* drive info */
short wdp_config; /* general configuration */
#define WD_CFG_REMOVABLE 0x0080
#define WD_CFG_FIXED 0x0040
short wdp_cylinders; /* number of non-removable cylinders */
char __reserved1[2];
short wdp_heads; /* number of heads */
short wdp_unfbytespertrk; /* number of unformatted bytes/track */
short wdp_unfbytespersec; /* number of unformatted bytes/sector */
short wdp_sectors; /* number of sectors */
char wdp_vendor1[6];
/* controller info */
char wdp_serial[20]; /* serial number */
short wdp_buftype; /* buffer type */
#define WD_BUF_SINGLEPORTSECTOR 1 /* single port, single sector buffer */
#define WD_BUF_DUALPORTMULTI 2 /* dual port, multiple sector buffer */
#define WD_BUF_DUALPORTMULTICACHE 3 /* above plus track cache */
short wdp_bufsize; /* buffer size, in 512-byte units */
short wdp_eccbytes; /* ecc bytes appended */
char wdp_revision[8]; /* firmware revision */
char wdp_model[40]; /* model name */
u_char wdp_maxmulti; /* maximum sectors per interrupt */
char wdp_vendor2[1];
short wdp_usedmovsd; /* can use double word read/write? */
char wdp_vendor3[1];
char wdp_capabilities; /* capability flags */
#define WD_CAP_LBA 0x02
#define WD_CAP_DMA 0x01
char __reserved2[2];
char wdp_vendor4[1];
char wdp_piotiming; /* PIO timing mode */
char wdp_vendor5[1];
char wdp_dmatiming; /* DMA timing mode */
};
#endif /* _KERNEL */
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