[unix-history] / usr / src / sys / vax / stand / hp.c

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)hp.c	7.9 (Berkeley) %G%
 */

/*
 * RP??/RM?? disk driver with ECC handling and bad block forwarding.
 * Also supports header io operations and commands to write check
 * header and data.
 */
#include "param.h"
#include "inode.h"
#include "fs.h"
#include "dkbad.h"
#include "disklabel.h"

#include "../vax/pte.h"

#include "../vaxmba/hpreg.h"
#include "../vaxmba/mbareg.h"

#include "saio.h"
#include "savax.h"

#define	RETRIES		27

#define	MASKREG(reg)	((reg)&0xffff)

#define	MAXBADDESC	126
#define	SECTSIZ 	512	/* sector size in bytes */
#define	HDRSIZ		4	/* number of bytes in sector header */

char	lbuf[SECTSIZ];

#define	RP06(type) ((type) == MBDT_RP06 || (type) == MBDT_RP05 \
	|| (type) == MBDT_RP04)
#define	ML11(type) ((type) == MBDT_ML11A)
#define	RM80(type) ((type) == MBDT_RM80)

u_char	hp_offset[16] = {
	HPOF_P400, HPOF_M400, HPOF_P400, HPOF_M400,
	HPOF_P800, HPOF_M800, HPOF_P800, HPOF_M800,
	HPOF_P1200, HPOF_M1200, HPOF_P1200, HPOF_M1200,
	0, 0, 0, 0,
};

#define	MAXUNIT		8
struct	disklabel hplabel[MAXNMBA][MAXUNIT];
#ifndef SMALL
struct	dkbad hpbad[MAXNMBA][MAXUNIT];
int	sectsiz;
#endif

struct	hp_softc {
	char	type;
	char	gottype;
	char	ssect;			/* 1 when on track w/skip sector */
	char	debug;
#	define	HPF_BSEDEBUG	01	/* debugging bad sector forwarding */
#	define	HPF_ECCDEBUG	02	/* debugging ecc correction */
	int	ecclim;
	int	retries;
} hp_softc[MAXNMBA][MAXUNIT];

/*
 * When awaiting command completion, don't hang on to the status register
 * since this ties up some controllers.
 */
#define	HPWAIT(addr) \
	while ((((addr)->hpds)&HPDS_DRY) == 0) \
		DELAY(500);

hpopen(io)
	register struct iob *io;
{
	register unit = io->i_unit;
	register struct hp_softc *sc;
	register struct disklabel *lp;
	struct hpdevice *hpaddr;
	struct disklabel *dlp;
	int error = 0;

	if ((u_int)io->i_adapt >= MAXNMBA || !mbainit(io->i_adapt))
		return (EADAPT);
	if ((u_int)io->i_ctlr)
		return (ECTLR);
	if ((u_int)unit >= MAXUNIT)
		return (EUNIT);
	hpaddr = (struct hpdevice *)mbadrv(io->i_adapt, unit);
	sc = &hp_softc[io->i_adapt][unit];
	lp = &hplabel[io->i_adapt][unit];
	if (sc->gottype == 0) {
		register int i;
		struct iob tio;

#ifndef SMALL
		sc->retries = RETRIES;
		sc->ecclim = 11;
		sc->debug = 0;
#endif
		hpaddr->hpcs1 = HP_DCLR|HP_GO;		/* init drive */
		hpaddr->hpcs1 = HP_PRESET|HP_GO;
#ifndef SMALL
		if ((hpaddr->hpds & HPDS_DPR) == 0)
			return (ENXIO);
		sc->type = hpaddr->hpdt & MBDT_TYPE;
		if (sc->type == MBDT_ML11B)
			sc->type = MBDT_ML11A;
		if (!ML11(sc->type))
#endif
			hpaddr->hpof = HPOF_FMT22;
		/*
		 * Read in the pack label.
		 */
		lp->d_nsectors = 32;
		lp->d_secpercyl = 20*32;
		tio = *io;
		tio.i_bn = LABELSECTOR;
		tio.i_ma = lbuf;
		tio.i_cc = SECTSIZ;
		tio.i_flgs |= F_RDDATA;
		if (hpstrategy(&tio, READ) != SECTSIZ)
			error = ERDLAB;
		dlp = (struct disklabel *)(lbuf + LABELOFFSET);
		if (error == 0 && (dlp->d_magic != DISKMAGIC ||
		    dlp->d_magic2 != DISKMAGIC))
			error = EUNLAB;
		if (error == 0)
			*lp = *dlp;
		else
#ifdef COMPAT_42
		    if (hpmaptype(hpaddr, hpaddr->hpdt & MBDT_TYPE, unit, lp) == 0)
#endif
			return (error);

#ifndef SMALL
		/*
		 * Read in the bad sector table.
		 */
		tio.i_bn = lp->d_secpercyl * lp->d_ncylinders - lp->d_nsectors;
		tio.i_ma = (char *)&hpbad[io->i_adapt][unit];
		tio.i_cc = sizeof(struct dkbad);
		for (i = 0; i < 5; i++) {
			if (hpstrategy(&tio, READ) == sizeof(struct dkbad))
				break;
			tio.i_bn += 2;
		}
		if (i == 5) {
			printf("hp: can't read bad sector table\n");
			for (i = 0; i < MAXBADDESC; i++) {
				hpbad[io->i_adapt][unit].bt_bad[i].bt_cyl = -1;
				hpbad[io->i_adapt][unit].bt_bad[i].bt_trksec = -1;
			}
		}
#endif
		sc->gottype = 1;
	}
	if (io->i_part >= lp->d_npartitions ||
	    lp->d_partitions[io->i_part].p_size == 0)
		return (EPART);
	io->i_boff = lp->d_partitions[io->i_part].p_offset;
	return (0);
}

hpstrategy(io, func)
	register struct iob *io;
{
	register int unit = io->i_unit;
	register struct hp_softc *sc;
	register struct disklabel *lp;
	struct mba_regs *mba;
	struct hpdevice *hpaddr;
	daddr_t bn, startblock;
	int cn, tn, sn, bytecnt, bytesleft, rv;
	int er1, er2, hprecal;
	char *membase;

	mba = mbamba(io->i_adapt);
	hpaddr = (struct hpdevice *)mbadrv(io->i_adapt, unit);
	sc = &hp_softc[io->i_adapt][unit];
	lp = &hplabel[io->i_adapt][unit];
#ifndef SMALL
	sectsiz = SECTSIZ;
	if ((io->i_flgs & (F_HDR|F_HCHECK)) != 0)
		sectsiz += HDRSIZ;
	if ((hpaddr->hpds & HPDS_VV) == 0) {
		hpaddr->hpcs1 = HP_DCLR|HP_GO;
		hpaddr->hpcs1 = HP_PRESET|HP_GO;
		if (!ML11(sc->type))
			hpaddr->hpof = HPOF_FMT22;
	}
	io->i_errcnt = 0;
	sc->ssect = 0;
	rv = bytecnt = io->i_cc;
	membase = io->i_ma;
	startblock = io->i_bn;
	hprecal = 0;
#endif

restart:
	bn = io->i_bn;
	cn = bn / lp->d_secpercyl;
	sn = bn % lp->d_secpercyl;
	tn = sn / lp->d_nsectors;
	sn = sn % lp->d_nsectors + sc->ssect;

	HPWAIT(hpaddr);
	mba->mba_sr = -1;
	if (ML11(sc->type))
		hpaddr->hpda = bn;
	else {
		hpaddr->hpdc = cn;
		hpaddr->hpda = (tn << 8) + sn;
	}
#ifdef SMALL
	mbastart(io, io->i_unit, func);		/* start transfer */
	HPWAIT(hpaddr);
	if (hpaddr->hpds & HPDS_ERR) {
		printf("hp error: sn [%d-%d) ds=%b er1=%b\n",
		    bn, bn + io->i_cc/SECTSIZ, MASKREG(hpaddr->hpds), HPDS_BITS,
		    MASKREG(hpaddr->hper1), HPER1_BITS);
		return (-1);
	}
	return (io->i_cc);
#else
	if (mbastart(io, io->i_unit, func) != 0) {	/* start transfer */
		rv = -1;
		goto done;
	}
	HPWAIT(hpaddr);
	/*
	 * Successful data transfer, return.
	 */
	if ((hpaddr->hpds&HPDS_ERR) == 0 && (mba->mba_sr&MBSR_EBITS) == 0)
		goto done;

	/*
	 * Error handling.  Calculate location of error.
	 */
	bytesleft = MASKREG(mba->mba_bcr);
	if (bytesleft) 
		bytesleft |= 0xffff0000;	/* sxt */
	bn = io->i_bn + (io->i_cc + bytesleft) / sectsiz;
	er1 = MASKREG(hpaddr->hper1);
	er2 = MASKREG(hpaddr->hper2);
	if (er1 & (HPER1_DCK|HPER1_ECH))
		bn--;	/* Error is in Prev block */
	cn = bn/lp->d_secpercyl;
	sn = bn%lp->d_secpercyl;
	tn = sn/lp->d_nsectors;
	sn = sn%lp->d_nsectors;
	if (sc->debug & (HPF_ECCDEBUG|HPF_BSEDEBUG)) {
		printf("hp error: sn%d (cyl,trk,sec)=(%d,%d,%d) ds=%b\n",
			bn, cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS);
		printf("er1=%b er2=%b\n", er1, HPER1_BITS, er2, HPER2_BITS);
		printf("bytes left: %d, of 0x%x, da 0x%x\n",-bytesleft,
			hpaddr->hpof, hpaddr->hpda);
	}
	if (er1 & HPER1_HCRC) {
		er1 &= ~(HPER1_HCE|HPER1_FER);
		er2 &= ~HPER2_BSE;
		if ((io->i_flgs&F_NBSF) == 0 && hpecc(io, BSE) == 0)
			goto success;
	}
	/*
	 * Give up early if drive write locked.
	 */
	if (er1&HPER1_WLE) {
		printf("hp%d: write locked\n", unit);
		rv = -1;
		goto done;
	}
	/*
	 * Skip sector handling.
	 */
	if (RM80(sc->type) && (er2 & HPER2_SSE)) {
		(void) hpecc(io, SSE);
		sc->ssect = 1;
		goto restart;
	}
	/*
	 * Attempt to forward bad sectors on anything but an ML11.
	 * Interpret format error bit as a bad block on RP06's.
	 */
	if (((er2 & HPER2_BSE) && !ML11(sc->type)) ||
	    (MASKREG(er1) == HPER1_FER && RP06(sc->type))) {
		if (io->i_flgs & F_NBSF) {
			io->i_error = EBSE;
			goto hard;
		}
		if (hpecc(io, BSE) == 0)
			goto success;
		io->i_error = EBSE;
		goto hard;
	}
	/*
	 * ECC correction?
	 */
	if ((er1 & (HPER1_DCK|HPER1_ECH)) == HPER1_DCK) {
		if (hpecc(io, ECC) == 0)
			goto success;
		io->i_error = EECC;
		goto hard;
	} 

	/*
	 * If a hard error, or maximum retry count
	 * exceeded, clear controller state and
	 * pass back error to caller.
	 */
	if (++io->i_errcnt > sc->retries || (er1 & HPER1_HARD) ||
	    (!ML11(sc->type) && (er2 & HPER2_HARD)) ||
	    (ML11(sc->type) && (io->i_errcnt >= 16))) {
		io->i_error = EHER;
		if (mba->mba_sr & (MBSR_WCKUP|MBSR_WCKLWR))
			io->i_error = EWCK;
hard:
		io->i_errblk = bn + sc->ssect;
		if (sc->debug & (HPF_BSEDEBUG|HPF_ECCDEBUG))
		    printf(" dc=%d, da=0x%x",MASKREG(hpaddr->hpdc),
			  MASKREG(hpaddr->hpda));
		else {
		    printf("hp error: sn%d (cyl,trk,sec)=(%d,%d,%d) ds=%b \n",
			   bn, cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS);
		    printf("er1=%b er2=%b", er1, HPER1_BITS, er2, HPER2_BITS);
		}
		hpaddr->hpcs1 = HP_DCLR|HP_GO;
		printf("\n");
		rv = -1;
		goto done;

	}
	/* fall thru to retry */
	hpaddr->hpcs1 = HP_DCLR|HP_GO;
	HPWAIT(hpaddr);

	/* 
	 * Every fourth retry recalibrate.
	 */
	if (((io->i_errcnt & 07) == 4) ) {
		hpaddr->hpcs1 = HP_RECAL|HP_GO;
		HPWAIT(hpaddr);
		hpaddr->hpdc = cn;
		hpaddr->hpcs1 = HP_SEEK|HP_GO;
		HPWAIT(hpaddr);
	}

	if (io->i_errcnt >= 16 && (io->i_flgs & F_READ)) {
		hpaddr->hpof = hp_offset[io->i_errcnt & 017]|HPOF_FMT22;
		hpaddr->hpcs1 = HP_OFFSET|HP_GO;
		HPWAIT(hpaddr);
	}
	if (sc->debug & (HPF_ECCDEBUG|HPF_BSEDEBUG))
		printf("restart: bn=%d, cc=%d, ma=0x%x hprecal=%d\n",
		  io->i_bn, io->i_cc, io->i_ma, hprecal);
	goto restart;

success:
	/*
	 * On successful error recovery, bump
	 * block number to advance to next portion
	 * of i/o transfer.
	 */
	bn++;
	if ((bn-startblock) * sectsiz < bytecnt) {
		io->i_bn = bn;
		io->i_ma = membase + (io->i_bn - startblock)*sectsiz;
		io->i_cc = bytecnt - (io->i_bn - startblock)*sectsiz;
		if (sc->debug & (HPF_ECCDEBUG|HPF_BSEDEBUG))
			printf("restart: bn=%d, cc=%d, ma=0x%x hprecal=%d\n",
			  io->i_bn, io->i_cc, io->i_ma, hprecal);
		goto restart;
	}
done:
	if (io->i_errcnt >= 16) {
		hpaddr->hpcs1 = HP_RTC|HP_GO;
		while (hpaddr->hpds & HPDS_PIP)
			;
	}
	io->i_bn = startblock;		/*reset i_bn to original */
	io->i_cc = bytecnt;		/*reset i_cc to total count xfered*/
	io->i_ma = membase;		/*reset i_ma to original */
	return (rv);
#endif
}

#ifndef SMALL
hpecc(io, flag)
	register struct iob *io;
	int flag;
{
	register int unit = io->i_unit;
	register struct mba_regs *mbp;
	register struct hpdevice *rp;
	register struct hp_softc *sc;
	register struct disklabel *lp;
	int npf, bn, cn, tn, sn, bcr;

	mbp = mbamba(io->i_adapt);
	rp = (struct hpdevice *)mbadrv(io->i_adapt, unit);
	sc = &hp_softc[io->i_adapt][unit];
	lp = &hplabel[io->i_adapt][unit];
	bcr = MASKREG(mbp->mba_bcr);
	if (bcr)
		bcr |= 0xffff0000;		/* sxt */
	npf = (bcr + io->i_cc) / sectsiz;	/* # sectors read */
	if (flag == ECC)
		npf--;		/* Error is in prev block --ghg */
	bn = io->i_bn + npf + sc->ssect;	/* physical block #*/
	if (sc->debug & HPF_ECCDEBUG)
		printf("bcr=%d npf=%d ssect=%d sectsiz=%d i_cc=%d\n",
			bcr, npf, sc->ssect, sectsiz, io->i_cc);
	/*
	 * ECC correction logic.
	 */
	if (flag == ECC) {
		register int i;
		caddr_t addr;
		int bit, o, mask;

		printf("hp%d: soft ecc sn%d\n", unit, bn);
		mask = MASKREG(rp->hpec2);
		for (i = mask, bit = 0; i; i >>= 1)
			if (i & 1)
				bit++;
		if (bit > sc->ecclim) {
			printf("%d-bit error\n", bit);
			return (1);
		}
		i = MASKREG(rp->hpec1) - 1;	/* -1 makes 0 origin */
		bit = i&07;
		o = (i & ~07) >> 3;
		rp->hpcs1 = HP_DCLR | HP_GO;
		while (o <sectsiz && npf*sectsiz + o < io->i_cc && bit > -11) {
			addr = io->i_ma + (npf*sectsiz) + o;
			/*
			 * No data transfer occurs with a write check,
			 * so don't correct the resident copy of data.
			 */
			if ((io->i_flgs & (F_CHECK|F_HCHECK)) == 0) {
				if (sc->debug & HPF_ECCDEBUG)
					printf("addr=%x old=%x ", addr,
						(*addr & 0xff));
				*addr ^= (mask << bit);
				if (sc->debug & HPF_ECCDEBUG)
					printf("new=%x\n",(*addr & 0xff));
			}
			o++, bit -= 8;
		}
		return (0);
	}

	/*
	 * Skip sector error.
	 * Set skip-sector-inhibit and
	 * read next sector
	 */
	if (flag == SSE) {
		rp->hpcs1 = HP_DCLR | HP_GO;
		HPWAIT(rp);
		rp->hpof |= HPOF_SSEI;
		return (0);
	}

	/*
	 * Bad block forwarding.
	 */
	 if (flag == BSE) {
		int bbn;

		rp->hpcs1 = HP_DCLR | HP_GO;
		if (sc->debug & HPF_BSEDEBUG)
			printf("hpecc: BSE @ bn %d\n", bn);
		cn = bn / lp->d_secpercyl;
		sn = bn % lp->d_secpercyl;
		tn = sn / lp->d_nsectors;
		sn = sn % lp->d_nsectors;
		bcr += sectsiz;
		if ((bbn = isbad(&hpbad[io->i_adapt][unit], cn, tn, sn)) < 0)
			return (1);
		bbn = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors - 1
		    - bbn;
		cn = bbn / lp->d_secpercyl;
		sn = bbn % lp->d_secpercyl;
		tn = sn / lp->d_nsectors;
		sn = sn % lp->d_nsectors;
		io->i_cc = sectsiz;
		io->i_ma += npf * sectsiz;
		if (sc->debug & HPF_BSEDEBUG)
			printf("revector to cn %d tn %d sn %d\n", cn, tn, sn);
		rp->hpof &= ~HPOF_SSEI;
		mbp->mba_sr = -1;
		rp->hpdc = cn;
		rp->hpda = (tn<<8) + sn;
		mbastart(io, io->i_unit, io->i_flgs);
		io->i_errcnt = 0;
		HPWAIT(rp);
		return (rp->hpds&HPDS_ERR);
	}
	printf("hpecc: flag=%d\n", flag);
	return (1);
}

/*ARGSUSED*/
hpioctl(io, cmd, arg)
	struct iob *io;
	int cmd;
	caddr_t arg;
{
	register unit = io->i_unit;
	register struct hp_softc *sc = &hp_softc[io->i_adapt][unit];
	register struct disklabel *lp = &hplabel[io->i_adapt][unit];
	struct mba_drv *drv = mbadrv(io->i_adapt, unit);

	switch(cmd) {

	case SAIODEBUG:
		sc->debug = (int)arg;
		break;

	case SAIODEVDATA:
		if (drv->mbd_dt&MBDT_TAP)
			return (ECMD);
		*(struct disklabel *)arg = *lp;
		break;

	case SAIOGBADINFO:
		if (drv->mbd_dt&MBDT_TAP)
			return (ECMD);
		*(struct dkbad *)arg = hpbad[io->i_adapt][unit];
		break;

	case SAIOECCLIM:
		sc->ecclim = (int)arg;
		break;

	case SAIORETRIES:
		sc->retries = (int)arg;
		break;

	case SAIOSSI:			/* skip-sector-inhibit */
		if (drv->mbd_dt&MBDT_TAP)
			return (ECMD);
		if ((io->i_flgs&F_SSI) == 0) {
			/* make sure this is done once only */
			io->i_flgs |= F_SSI;
			lp->d_nsectors++;
			lp->d_secpercyl += lp->d_ntracks;
		}
		break;

	case SAIONOSSI:			/* remove skip-sector-inhibit */
		if (io->i_flgs & F_SSI) {
			io->i_flgs &= ~F_SSI;
			drv->mbd_of &= ~HPOF_SSEI;
			lp->d_nsectors--;
			lp->d_secpercyl -= lp->d_ntracks;
		}
		break;

	case SAIOSSDEV:			/* drive have skip sector? */
		return (RM80(sc->type) ? 0 : ECMD);

	default:
		return (ECMD);
	}
	return (0);
}
#endif /* !SMALL */
Commit	Line	Data
8ae0e4b4	1	/*
39c71180	2	* Copyright (c) 1982, 1986 Regents of the University of California.
8ae0e4b4 KM	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*
f2f9e58f	6	* @(#)hp.c 7.9 (Berkeley) %G%
8ae0e4b4	7	*/
63c82e3f HS	8
63c82e3f HS	9	/*
4dbcd6a1 KB	10	* RP??/RM?? disk driver with ECC handling and bad block forwarding.
	11	* Also supports header io operations and commands to write check
	12	* header and data.
63c82e3f	13	*/
39c71180 MK	14	#include "param.h"
	15	#include "inode.h"
	16	#include "fs.h"
	17	#include "dkbad.h"
	18	#include "disklabel.h"
63c82e3f HS	19
63c82e3f HS	20	#include "../vax/pte.h"
39c71180	21
63c82e3f HS	22	#include "../vaxmba/hpreg.h"
	23	#include "../vaxmba/mbareg.h"
	24
	25	#include "saio.h"
	26	#include "savax.h"
	27
f834e141 MK	28	#define RETRIES 27
f834e141 MK	29
63c82e3f HS	30	#define MASKREG(reg) ((reg)&0xffff)
63c82e3f HS	31
356d90a8 SL	32	#define MAXBADDESC 126
	33	#define SECTSIZ 512 /* sector size in bytes */
	34	#define HDRSIZ 4 /* number of bytes in sector header */
63c82e3f	35
80c81fbf	36	char lbuf[SECTSIZ];
63c82e3f	37
80c81fbf MK	38	#define RP06(type) ((type) == MBDT_RP06 \|\| (type) == MBDT_RP05 \
	39	\|\| (type) == MBDT_RP04)
	40	#define ML11(type) ((type) == MBDT_ML11A)
	41	#define RM80(type) ((type) == MBDT_RM80)
63c82e3f HS	42
63c82e3f HS	43	u_char hp_offset[16] = {
4dbcd6a1 KB	44	HPOF_P400, HPOF_M400, HPOF_P400, HPOF_M400,
	45	HPOF_P800, HPOF_M800, HPOF_P800, HPOF_M800,
	46	HPOF_P1200, HPOF_M1200, HPOF_P1200, HPOF_M1200,
	47	0, 0, 0, 0,
63c82e3f HS	48	};
63c82e3f HS	49
4dbcd6a1 KB	50	#define MAXUNIT 8
4dbcd6a1 KB	51	struct disklabel hplabel[MAXNMBA][MAXUNIT];
80c81fbf	52	#ifndef SMALL
4dbcd6a1	53	struct dkbad hpbad[MAXNMBA][MAXUNIT];
80c81fbf MK	54	int sectsiz;
80c81fbf MK	55	#endif
356d90a8	56
f834e141 MK	57	struct hp_softc {
	58	char type;
	59	char gottype;
4dbcd6a1	60	char ssect; /* 1 when on track w/skip sector */
f834e141 MK	61	char debug;
	62	# define HPF_BSEDEBUG 01 /* debugging bad sector forwarding */
	63	# define HPF_ECCDEBUG 02 /* debugging ecc correction */
	64	int ecclim;
	65	int retries;
4dbcd6a1	66	} hp_softc[MAXNMBA][MAXUNIT];
356d90a8	67
4b5bcdd9	68	/*
4dbcd6a1 KB	69	* When awaiting command completion, don't hang on to the status register
4dbcd6a1 KB	70	* since this ties up some controllers.
4b5bcdd9	71	*/
356d90a8	72	#define HPWAIT(addr) \
4dbcd6a1 KB	73	while ((((addr)->hpds)&HPDS_DRY) == 0) \
4dbcd6a1 KB	74	DELAY(500);
4b5bcdd9	75
63c82e3f HS	76	hpopen(io)
	77	register struct iob *io;
	78	{
	79	register unit = io->i_unit;
4dbcd6a1 KB	80	register struct hp_softc *sc;
	81	register struct disklabel *lp;
	82	struct hpdevice *hpaddr;
60bc077a	83	struct disklabel *dlp;
f2f9e58f	84	int error = 0;
63c82e3f	85
4dbcd6a1 KB	86	if ((u_int)io->i_adapt >= MAXNMBA \|\| !mbainit(io->i_adapt))
	87	return (EADAPT);
	88	if ((u_int)io->i_ctlr)
	89	return (ECTLR);
	90	if ((u_int)unit >= MAXUNIT)
	91	return (EUNIT);
	92	hpaddr = (struct hpdevice *)mbadrv(io->i_adapt, unit);
	93	sc = &hp_softc[io->i_adapt][unit];
	94	lp = &hplabel[io->i_adapt][unit];
f834e141	95	if (sc->gottype == 0) {
4dbcd6a1	96	register int i;
63c82e3f HS	97	struct iob tio;
63c82e3f HS	98
80c81fbf	99	#ifndef SMALL
f834e141 MK	100	sc->retries = RETRIES;
	101	sc->ecclim = 11;
	102	sc->debug = 0;
80c81fbf	103	#endif
7fc00e31 HS	104	hpaddr->hpcs1 = HP_DCLR\|HP_GO; /* init drive */
7fc00e31 HS	105	hpaddr->hpcs1 = HP_PRESET\|HP_GO;
80c81fbf	106	#ifndef SMALL
9ab9be08	107	if ((hpaddr->hpds & HPDS_DPR) == 0)
39c71180	108	return (ENXIO);
80c81fbf MK	109	sc->type = hpaddr->hpdt & MBDT_TYPE;
80c81fbf MK	110	if (sc->type == MBDT_ML11B)
39c71180	111	sc->type = MBDT_ML11A;
80c81fbf MK	112	if (!ML11(sc->type))
80c81fbf MK	113	#endif
7fc00e31	114	hpaddr->hpof = HPOF_FMT22;
63c82e3f	115	/*
80c81fbf	116	* Read in the pack label.
63c82e3f	117	*/
80c81fbf MK	118	lp->d_nsectors = 32;
80c81fbf MK	119	lp->d_secpercyl = 20*32;
63c82e3f	120	tio = *io;
80c81fbf MK	121	tio.i_bn = LABELSECTOR;
	122	tio.i_ma = lbuf;
	123	tio.i_cc = SECTSIZ;
	124	tio.i_flgs \|= F_RDDATA;
b04dd895	125	if (hpstrategy(&tio, READ) != SECTSIZ)
f2f9e58f	126	error = ERDLAB;
60bc077a	127	dlp = (struct disklabel *)(lbuf + LABELOFFSET);
f2f9e58f MK	128	if (error == 0 && (dlp->d_magic != DISKMAGIC \|\|
	129	dlp->d_magic2 != DISKMAGIC))
	130	error = EUNLAB;
	131	if (error == 0)
	132	lp = dlp;
	133	else
b04dd895	134	#ifdef COMPAT_42
f2f9e58f	135	if (hpmaptype(hpaddr, hpaddr->hpdt & MBDT_TYPE, unit, lp) == 0)
80c81fbf	136	#endif
f2f9e58f MK	137	return (error);
f2f9e58f MK	138
60bc077a	139	#ifndef SMALL
80c81fbf MK	140	/*
	141	* Read in the bad sector table.
	142	*/
	143	tio.i_bn = lp->d_secpercyl * lp->d_ncylinders - lp->d_nsectors;
4dbcd6a1 KB	144	tio.i_ma = (char *)&hpbad[io->i_adapt][unit];
4dbcd6a1 KB	145	tio.i_cc = sizeof(struct dkbad);
63c82e3f	146	for (i = 0; i < 5; i++) {
4dbcd6a1	147	if (hpstrategy(&tio, READ) == sizeof(struct dkbad))
63c82e3f HS	148	break;
	149	tio.i_bn += 2;
	150	}
	151	if (i == 5) {
4dbcd6a1	152	printf("hp: can't read bad sector table\n");
63c82e3f	153	for (i = 0; i < MAXBADDESC; i++) {
4dbcd6a1 KB	154	hpbad[io->i_adapt][unit].bt_bad[i].bt_cyl = -1;
4dbcd6a1 KB	155	hpbad[io->i_adapt][unit].bt_bad[i].bt_trksec = -1;
63c82e3f	156	}
f834e141	157	}
80c81fbf	158	#endif
60bc077a	159	sc->gottype = 1;
63c82e3f	160	}
4dbcd6a1 KB	161	if (io->i_part >= lp->d_npartitions \|\|
	162	lp->d_partitions[io->i_part].p_size == 0)
	163	return (EPART);
	164	io->i_boff = lp->d_partitions[io->i_part].p_offset;
80c81fbf	165	return (0);
63c82e3f HS	166	}
	167
	168	hpstrategy(io, func)
	169	register struct iob *io;
	170	{
4dbcd6a1 KB	171	register int unit = io->i_unit;
	172	register struct hp_softc *sc;
	173	register struct disklabel *lp;
	174	struct mba_regs *mba;
	175	struct hpdevice *hpaddr;
356d90a8	176	daddr_t bn, startblock;
39c71180	177	int cn, tn, sn, bytecnt, bytesleft, rv;
63c82e3f	178	int er1, er2, hprecal;
4dbcd6a1	179	char *membase;
63c82e3f	180
4dbcd6a1 KB	181	mba = mbamba(io->i_adapt);
	182	hpaddr = (struct hpdevice *)mbadrv(io->i_adapt, unit);
	183	sc = &hp_softc[io->i_adapt][unit];
	184	lp = &hplabel[io->i_adapt][unit];
80c81fbf	185	#ifndef SMALL
63c82e3f HS	186	sectsiz = SECTSIZ;
	187	if ((io->i_flgs & (F_HDR\|F_HCHECK)) != 0)
	188	sectsiz += HDRSIZ;
	189	if ((hpaddr->hpds & HPDS_VV) == 0) {
	190	hpaddr->hpcs1 = HP_DCLR\|HP_GO;
	191	hpaddr->hpcs1 = HP_PRESET\|HP_GO;
80c81fbf	192	if (!ML11(sc->type))
63c82e3f HS	193	hpaddr->hpof = HPOF_FMT22;
	194	}
	195	io->i_errcnt = 0;
f834e141 MK	196	sc->ssect = 0;
f834e141 MK	197	rv = bytecnt = io->i_cc;
63c82e3f HS	198	membase = io->i_ma;
63c82e3f HS	199	startblock = io->i_bn;
308847fc	200	hprecal = 0;
80c81fbf	201	#endif
86bcc486	202
ccc991c5	203	restart:
63c82e3f	204	bn = io->i_bn;
80c81fbf MK	205	cn = bn / lp->d_secpercyl;
	206	sn = bn % lp->d_secpercyl;
	207	tn = sn / lp->d_nsectors;
	208	sn = sn % lp->d_nsectors + sc->ssect;
63c82e3f	209
4b5bcdd9	210	HPWAIT(hpaddr);
ccc991c5	211	mba->mba_sr = -1;
80c81fbf	212	if (ML11(sc->type))
63c82e3f HS	213	hpaddr->hpda = bn;
	214	else {
	215	hpaddr->hpdc = cn;
	216	hpaddr->hpda = (tn << 8) + sn;
	217	}
80c81fbf	218	#ifdef SMALL
4dbcd6a1	219	mbastart(io, io->i_unit, func); /* start transfer */
80c81fbf MK	220	HPWAIT(hpaddr);
	221	if (hpaddr->hpds & HPDS_ERR) {
	222	printf("hp error: sn [%d-%d) ds=%b er1=%b\n",
	223	bn, bn + io->i_cc/SECTSIZ, MASKREG(hpaddr->hpds), HPDS_BITS,
	224	MASKREG(hpaddr->hper1), HPER1_BITS);
	225	return (-1);
	226	}
	227	return (io->i_cc);
	228	#else
4dbcd6a1	229	if (mbastart(io, io->i_unit, func) != 0) { /* start transfer */
f834e141 MK	230	rv = -1;
	231	goto done;
	232	}
4b5bcdd9	233	HPWAIT(hpaddr);
356d90a8 SL	234	/*
	235	* Successful data transfer, return.
	236	*/
c5fc2df8 MK	237	if ((hpaddr->hpds&HPDS_ERR) == 0 && (mba->mba_sr&MBSR_EBITS) == 0)
c5fc2df8 MK	238	goto done;
63c82e3f	239
356d90a8 SL	240	/*
	241	* Error handling. Calculate location of error.
	242	*/
	243	bytesleft = MASKREG(mba->mba_bcr);
	244	if (bytesleft)
	245	bytesleft \|= 0xffff0000; /* sxt */
	246	bn = io->i_bn + (io->i_cc + bytesleft) / sectsiz;
71da8ead MK	247	er1 = MASKREG(hpaddr->hper1);
	248	er2 = MASKREG(hpaddr->hper2);
	249	if (er1 & (HPER1_DCK\|HPER1_ECH))
	250	bn--; /* Error is in Prev block */
80c81fbf MK	251	cn = bn/lp->d_secpercyl;
	252	sn = bn%lp->d_secpercyl;
	253	tn = sn/lp->d_nsectors;
	254	sn = sn%lp->d_nsectors;
f834e141 MK	255	if (sc->debug & (HPF_ECCDEBUG\|HPF_BSEDEBUG)) {
	256	printf("hp error: sn%d (cyl,trk,sec)=(%d,%d,%d) ds=%b\n",
	257	bn, cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS);
356d90a8 SL	258	printf("er1=%b er2=%b\n", er1, HPER1_BITS, er2, HPER2_BITS);
	259	printf("bytes left: %d, of 0x%x, da 0x%x\n",-bytesleft,
	260	hpaddr->hpof, hpaddr->hpda);
	261	}
63c82e3f HS	262	if (er1 & HPER1_HCRC) {
	263	er1 &= ~(HPER1_HCE\|HPER1_FER);
	264	er2 &= ~HPER2_BSE;
f834e141 MK	265	if ((io->i_flgs&F_NBSF) == 0 && hpecc(io, BSE) == 0)
f834e141 MK	266	goto success;
63c82e3f	267	}
86bcc486 SL	268	/*
	269	* Give up early if drive write locked.
	270	*/
63c82e3f HS	271	if (er1&HPER1_WLE) {
63c82e3f HS	272	printf("hp%d: write locked\n", unit);
f834e141 MK	273	rv = -1;
f834e141 MK	274	goto done;
9d78a350	275	}
86bcc486	276	/*
f834e141	277	* Skip sector handling.
86bcc486	278	*/
80c81fbf	279	if (RM80(sc->type) && (er2 & HPER2_SSE)) {
f834e141 MK	280	(void) hpecc(io, SSE);
	281	sc->ssect = 1;
	282	goto restart;
9d78a350	283	}
86bcc486	284	/*
f834e141 MK	285	* Attempt to forward bad sectors on anything but an ML11.
f834e141 MK	286	* Interpret format error bit as a bad block on RP06's.
86bcc486	287	*/
80c81fbf MK	288	if (((er2 & HPER2_BSE) && !ML11(sc->type)) \|\|
80c81fbf MK	289	(MASKREG(er1) == HPER1_FER && RP06(sc->type))) {
9d78a350	290	if (io->i_flgs & F_NBSF) {
4dbcd6a1	291	io->i_error = EBSE;
63c82e3f HS	292	goto hard;
	293	}
	294	if (hpecc(io, BSE) == 0)
	295	goto success;
9d78a350 SL	296	io->i_error = EBSE;
	297	goto hard;
	298	}
86bcc486	299	/*
356d90a8	300	* ECC correction?
86bcc486	301	*/
9d78a350	302	if ((er1 & (HPER1_DCK\|HPER1_ECH)) == HPER1_DCK) {
4b5bcdd9	303	if (hpecc(io, ECC) == 0)
63c82e3f	304	goto success;
9d78a350	305	io->i_error = EECC;
71da8ead	306	goto hard;
f834e141 MK	307	}
	308
	309	/*
	310	* If a hard error, or maximum retry count
	311	* exceeded, clear controller state and
	312	* pass back error to caller.
	313	*/
	314	if (++io->i_errcnt > sc->retries \|\| (er1 & HPER1_HARD) \|\|
80c81fbf MK	315	(!ML11(sc->type) && (er2 & HPER2_HARD)) \|\|
80c81fbf MK	316	(ML11(sc->type) && (io->i_errcnt >= 16))) {
f834e141 MK	317	io->i_error = EHER;
	318	if (mba->mba_sr & (MBSR_WCKUP\|MBSR_WCKLWR))
	319	io->i_error = EWCK;
	320	hard:
	321	io->i_errblk = bn + sc->ssect;
	322	if (sc->debug & (HPF_BSEDEBUG\|HPF_ECCDEBUG))
	323	printf(" dc=%d, da=0x%x",MASKREG(hpaddr->hpdc),
	324	MASKREG(hpaddr->hpda));
	325	else {
	326	printf("hp error: sn%d (cyl,trk,sec)=(%d,%d,%d) ds=%b \n",
	327	bn, cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS);
	328	printf("er1=%b er2=%b", er1, HPER1_BITS, er2, HPER2_BITS);
	329	}
	330	hpaddr->hpcs1 = HP_DCLR\|HP_GO;
	331	printf("\n");
	332	rv = -1;
	333	goto done;
	334
	335	}
308847fc	336	/* fall thru to retry */
63c82e3f	337	hpaddr->hpcs1 = HP_DCLR\|HP_GO;
4b5bcdd9	338	HPWAIT(hpaddr);
86bcc486 SL	339
	340	/*
	341	* Every fourth retry recalibrate.
	342	*/
356d90a8	343	if (((io->i_errcnt & 07) == 4) ) {
63c82e3f	344	hpaddr->hpcs1 = HP_RECAL\|HP_GO;
71da8ead	345	HPWAIT(hpaddr);
63c82e3f HS	346	hpaddr->hpdc = cn;
63c82e3f HS	347	hpaddr->hpcs1 = HP_SEEK\|HP_GO;
71da8ead MK	348	HPWAIT(hpaddr);
71da8ead MK	349	}
4b5bcdd9	350
71da8ead	351	if (io->i_errcnt >= 16 && (io->i_flgs & F_READ)) {
63c82e3f HS	352	hpaddr->hpof = hp_offset[io->i_errcnt & 017]\|HPOF_FMT22;
63c82e3f HS	353	hpaddr->hpcs1 = HP_OFFSET\|HP_GO;
71da8ead	354	HPWAIT(hpaddr);
63c82e3f	355	}
f834e141	356	if (sc->debug & (HPF_ECCDEBUG\|HPF_BSEDEBUG))
71da8ead MK	357	printf("restart: bn=%d, cc=%d, ma=0x%x hprecal=%d\n",
71da8ead MK	358	io->i_bn, io->i_cc, io->i_ma, hprecal);
f834e141	359	goto restart;
9d78a350	360
86bcc486 SL	361	success:
	362	/*
	363	* On successful error recovery, bump
	364	* block number to advance to next portion
	365	* of i/o transfer.
	366	*/
63c82e3f HS	367	bn++;
63c82e3f HS	368	if ((bn-startblock) * sectsiz < bytecnt) {
63c82e3f	369	io->i_bn = bn;
63c82e3f HS	370	io->i_ma = membase + (io->i_bn - startblock)*sectsiz;
63c82e3f HS	371	io->i_cc = bytecnt - (io->i_bn - startblock)*sectsiz;
f834e141	372	if (sc->debug & (HPF_ECCDEBUG\|HPF_BSEDEBUG))
356d90a8 SL	373	printf("restart: bn=%d, cc=%d, ma=0x%x hprecal=%d\n",
356d90a8 SL	374	io->i_bn, io->i_cc, io->i_ma, hprecal);
ccc991c5	375	goto restart;
63c82e3f	376	}
c5fc2df8	377	done:
71da8ead MK	378	if (io->i_errcnt >= 16) {
	379	hpaddr->hpcs1 = HP_RTC\|HP_GO;
	380	while (hpaddr->hpds & HPDS_PIP)
	381	;
	382	}
f834e141	383	io->i_bn = startblock; /reset i_bn to original /
2f1563bc	384	io->i_cc = bytecnt; /reset i_cc to total count xfered/
f834e141 MK	385	io->i_ma = membase; /reset i_ma to original /
f834e141 MK	386	return (rv);
80c81fbf	387	#endif
63c82e3f	388	}
4b5bcdd9	389
80c81fbf	390	#ifndef SMALL
63c82e3f HS	391	hpecc(io, flag)
	392	register struct iob *io;
	393	int flag;
	394	{
4dbcd6a1 KB	395	register int unit = io->i_unit;
	396	register struct mba_regs *mbp;
	397	register struct hpdevice *rp;
	398	register struct hp_softc *sc;
	399	register struct disklabel *lp;
9d78a350	400	int npf, bn, cn, tn, sn, bcr;
63c82e3f	401
4dbcd6a1 KB	402	mbp = mbamba(io->i_adapt);
	403	rp = (struct hpdevice *)mbadrv(io->i_adapt, unit);
	404	sc = &hp_softc[io->i_adapt][unit];
	405	lp = &hplabel[io->i_adapt][unit];
356d90a8 SL	406	bcr = MASKREG(mbp->mba_bcr);
	407	if (bcr)
	408	bcr \|= 0xffff0000; /* sxt */
9d78a350	409	npf = (bcr + io->i_cc) / sectsiz; /* # sectors read */
71da8ead MK	410	if (flag == ECC)
71da8ead MK	411	npf--; /* Error is in prev block --ghg */
f834e141 MK	412	bn = io->i_bn + npf + sc->ssect; /* physical block #*/
f834e141 MK	413	if (sc->debug & HPF_ECCDEBUG)
356d90a8	414	printf("bcr=%d npf=%d ssect=%d sectsiz=%d i_cc=%d\n",
f834e141	415	bcr, npf, sc->ssect, sectsiz, io->i_cc);
86bcc486 SL	416	/*
	417	* ECC correction logic.
	418	*/
	419	if (flag == ECC) {
63c82e3f HS	420	register int i;
63c82e3f HS	421	caddr_t addr;
f834e141	422	int bit, o, mask;
63c82e3f	423
0cd55454	424	printf("hp%d: soft ecc sn%d\n", unit, bn);
63c82e3f	425	mask = MASKREG(rp->hpec2);
f834e141 MK	426	for (i = mask, bit = 0; i; i >>= 1)
	427	if (i & 1)
	428	bit++;
	429	if (bit > sc->ecclim) {
	430	printf("%d-bit error\n", bit);
	431	return (1);
	432	}
9d78a350	433	i = MASKREG(rp->hpec1) - 1; /* -1 makes 0 origin */
63c82e3f	434	bit = i&07;
356d90a8	435	o = (i & ~07) >> 3;
63c82e3f	436	rp->hpcs1 = HP_DCLR \| HP_GO;
10860662 SL	437	while (o <sectsiz && npf*sectsiz + o < io->i_cc && bit > -11) {
10860662 SL	438	addr = io->i_ma + (npf*sectsiz) + o;
10860662 SL	439	/*
	440	* No data transfer occurs with a write check,
	441	* so don't correct the resident copy of data.
	442	*/
356d90a8	443	if ((io->i_flgs & (F_CHECK\|F_HCHECK)) == 0) {
f834e141	444	if (sc->debug & HPF_ECCDEBUG)
356d90a8 SL	445	printf("addr=%x old=%x ", addr,
356d90a8 SL	446	(*addr & 0xff));
86bcc486	447	*addr ^= (mask << bit);
f834e141	448	if (sc->debug & HPF_ECCDEBUG)
356d90a8 SL	449	printf("new=%x\n",(*addr & 0xff));
356d90a8 SL	450	}
10860662	451	o++, bit -= 8;
63c82e3f	452	}
10860662	453	return (0);
9d78a350	454	}
63c82e3f	455
9d78a350 SL	456	/*
	457	* Skip sector error.
	458	* Set skip-sector-inhibit and
	459	* read next sector
	460	*/
86bcc486	461	if (flag == SSE) {
63c82e3f	462	rp->hpcs1 = HP_DCLR \| HP_GO;
4b5bcdd9	463	HPWAIT(rp);
63c82e3f	464	rp->hpof \|= HPOF_SSEI;
4dbcd6a1	465	return (0);
86bcc486	466	}
63c82e3f	467
86bcc486 SL	468	/*
	469	* Bad block forwarding.
	470	*/
	471	if (flag == BSE) {
ccc991c5	472	int bbn;
9d78a350	473
ccc991c5	474	rp->hpcs1 = HP_DCLR \| HP_GO;
f834e141	475	if (sc->debug & HPF_BSEDEBUG)
356d90a8	476	printf("hpecc: BSE @ bn %d\n", bn);
80c81fbf MK	477	cn = bn / lp->d_secpercyl;
	478	sn = bn % lp->d_secpercyl;
	479	tn = sn / lp->d_nsectors;
	480	sn = sn % lp->d_nsectors;
ccc991c5	481	bcr += sectsiz;
4dbcd6a1	482	if ((bbn = isbad(&hpbad[io->i_adapt][unit], cn, tn, sn)) < 0)
9d78a350	483	return (1);
80c81fbf MK	484	bbn = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors - 1
	485	- bbn;
	486	cn = bbn / lp->d_secpercyl;
	487	sn = bbn % lp->d_secpercyl;
	488	tn = sn / lp->d_nsectors;
39c71180	489	sn = sn % lp->d_nsectors;
ccc991c5	490	io->i_cc = sectsiz;
80c81fbf	491	io->i_ma += npf * sectsiz;
f834e141	492	if (sc->debug & HPF_BSEDEBUG)
356d90a8 SL	493	printf("revector to cn %d tn %d sn %d\n", cn, tn, sn);
356d90a8 SL	494	rp->hpof &= ~HPOF_SSEI;
ccc991c5	495	mbp->mba_sr = -1;
63c82e3f HS	496	rp->hpdc = cn;
63c82e3f HS	497	rp->hpda = (tn<<8) + sn;
4dbcd6a1	498	mbastart(io, io->i_unit, io->i_flgs);
356d90a8	499	io->i_errcnt = 0;
4b5bcdd9 SL	500	HPWAIT(rp);
4b5bcdd9 SL	501	return (rp->hpds&HPDS_ERR);
63c82e3f	502	}
9d78a350 SL	503	printf("hpecc: flag=%d\n", flag);
9d78a350 SL	504	return (1);
63c82e3f	505	}
86bcc486	506
63c82e3f HS	507	/ARGSUSED/
	508	hpioctl(io, cmd, arg)
	509	struct iob *io;
	510	int cmd;
	511	caddr_t arg;
	512	{
7fc00e31	513	register unit = io->i_unit;
4dbcd6a1 KB	514	register struct hp_softc *sc = &hp_softc[io->i_adapt][unit];
	515	register struct disklabel *lp = &hplabel[io->i_adapt][unit];
	516	struct mba_drv *drv = mbadrv(io->i_adapt, unit);
63c82e3f HS	517
	518	switch(cmd) {
	519
356d90a8	520	case SAIODEBUG:
f834e141 MK	521	sc->debug = (int)arg;
f834e141 MK	522	break;
356d90a8	523
63c82e3f	524	case SAIODEVDATA:
f834e141 MK	525	if (drv->mbd_dt&MBDT_TAP)
f834e141 MK	526	return (ECMD);
80c81fbf	527	(struct disklabel )arg = *lp;
f834e141 MK	528	break;
	529
	530	case SAIOGBADINFO:
	531	if (drv->mbd_dt&MBDT_TAP)
	532	return (ECMD);
4dbcd6a1	533	(struct dkbad )arg = hpbad[io->i_adapt][unit];
f834e141 MK	534	break;
	535
	536	case SAIOECCLIM:
	537	sc->ecclim = (int)arg;
	538	break;
	539
	540	case SAIORETRIES:
	541	sc->retries = (int)arg;
	542	break;
63c82e3f	543
9d78a350 SL	544	case SAIOSSI: /* skip-sector-inhibit */
	545	if (drv->mbd_dt&MBDT_TAP)
	546	return (ECMD);
	547	if ((io->i_flgs&F_SSI) == 0) {
	548	/* make sure this is done once only */
	549	io->i_flgs \|= F_SSI;
80c81fbf MK	550	lp->d_nsectors++;
80c81fbf MK	551	lp->d_secpercyl += lp->d_ntracks;
4b5bcdd9	552	}
f834e141	553	break;
ccc991c5	554
9d78a350	555	case SAIONOSSI: /* remove skip-sector-inhibit */
ccc991c5 HS	556	if (io->i_flgs & F_SSI) {
	557	io->i_flgs &= ~F_SSI;
	558	drv->mbd_of &= ~HPOF_SSEI;
80c81fbf MK	559	lp->d_nsectors--;
80c81fbf MK	560	lp->d_secpercyl -= lp->d_ntracks;
ccc991c5	561	}
f834e141	562	break;
ccc991c5	563
4b5bcdd9	564	case SAIOSSDEV: /* drive have skip sector? */
80c81fbf	565	return (RM80(sc->type) ? 0 : ECMD);
f834e141 MK	566
	567	default:
	568	return (ECMD);
63c82e3f	569	}
f834e141	570	return (0);
63c82e3f	571	}
4dbcd6a1	572	#endif /* !SMALL */