NetBSD/sys/arch/da30/dev/idreg.h

148 lines
5.8 KiB
C

/*-
* 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.
*
* from: @(#)idreg.h 7.1 (Berkeley) 5/9/91
* $Id: idreg.h,v 1.1 1994/02/22 23:50:28 paulus Exp $
*/
/*
* Disk Controller register definitions.
*/
struct idc {
u_char data; /* data register (R/W - 16 bits) */
u_char error; /* error register (R), precomp (W) */
u_char seccnt; /* sector count (R/W) */
u_char sector; /* first sector number (R/W) */
u_char cyl_lo; /* cylinder address, low byte (R/W) */
u_char cyl_hi; /* cylinder address, high byte (R/W)*/
u_char sdh; /* sector size/drive/head (R/W)*/
u_char csr; /* command/status register (W) */
u_char hidata; /* high byte of data */
u_char dummy9;
u_char dummya;
u_char dummyb;
u_char dummyc;
u_char dummyd;
u_char ccr; /* fixed disk controller control (W)*/
#define IDCTL_4BIT 0x8 /* use four head bits (id1003) */
#define IDCTL_RST 0x4 /* reset the controller */
#define IDCTL_IDS 0x2 /* disable controller interrupts */
u_char digin; /* disk controller input(via 1015) (R)*/
};
/*
* Status Bits.
*/
#define IDCS_BUSY 0x80 /* Controller busy bit. */
#define IDCS_READY 0x40 /* Selected drive is ready */
#define IDCS_WRTFLT 0x20 /* Write fault */
#define IDCS_SEEKCMPLT 0x10 /* Seek complete */
#define IDCS_DRQ 0x08 /* Data request bit. */
#define IDCS_ECCCOR 0x04 /* ECC correction made in data */
#define IDCS_INDEX 0x02 /* Index pulse from selected drive */
#define IDCS_ERR 0x01 /* Error detect bit. */
#define IDCS_BITS "\020\010busy\007rdy\006wrtflt\005seekdone\004drq\003ecc_cor\002index\001err"
#define IDERR_BITS "\020\010badblk\007uncorr\006id_crc\005no_id\003abort\002tr000\001no_dam"
/*
* Commands for Disk Controller.
*/
#define IDCC_RESTORE 0x10 /* disk restore code -- resets cntlr */
#define IDCC_READ 0x20 /* disk read code */
#define IDCC_WRITE 0x30 /* disk write code */
#define IDCC__LONG 0x02 /* modifier -- access ecc bytes */
#define IDCC__NORETRY 0x01 /* modifier -- no retrys */
#define IDCC_FORMAT 0x50 /* disk format code */
#define IDCC_DIAGNOSE 0x90 /* controller diagnostic */
#define IDCC_IDC 0x91 /* initialize drive command */
#define IDCC_EXTDCMD 0xE0 /* send extended command */
#define IDCC_READP 0xEC /* read parameters from controller */
#define IDCC_CACHEC 0xEF /* cache control */
#define ID_STEP 0 /* winchester- default 35us step */
#define IDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */
#ifdef KERNEL
/*
* read parameters command returns this:
*/
struct idparams {
/* drive info */
short idp_config; /* general configuration */
short idp_fixedcyl; /* number of non-removable cylinders */
short idp_removcyl; /* number of removable cylinders */
short idp_heads; /* number of heads */
short idp_unfbytespertrk; /* number of unformatted bytes/track */
short idp_unfbytes; /* number of unformatted bytes/sector */
short idp_sectors; /* number of sectors */
short idp_minisg; /* minimum bytes in inter-sector gap*/
short idp_minplo; /* minimum bytes in postamble */
short idp_vendstat; /* number of words of vendor status */
/* controller info */
char idp_cnsn[20]; /* controller serial number */
short idp_cntype; /* controller type */
#define IDTYPE_SINGLEPORTSECTOR 1 /* single port, single sector buffer */
#define IDTYPE_DUALPORTMULTI 2 /* dual port, multiple sector buffer */
#define IDTYPE_DUALPORTMULTICACHE 3 /* above plus track cache */
short idp_cnsbsz; /* sector buffer size, in sectors */
short idp_necc; /* ecc bytes appended */
char idp_rev[8]; /* firmware revision */
char idp_model[40]; /* model name */
short idp_nsecperint; /* sectors per interrupt */
short idp_usedmovsd; /* can use double word read/write? */
};
/*
* id driver entry points
*/
void idstrategy(struct buf *);
int idintr();
int idopen(dev_t, int, int, struct proc *);
int idclose(dev_t dev, int flags, int fmt);
int idioctl(dev_t, int, caddr_t, int, struct proc *);
/* int idformat(struct buf *bp); */
int idsize(dev_t, int *);
int iddump(dev_t);
#endif KERNEL