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

/*	hp.c	4.23	81/03/06	*/

#include "hp.h"
#if NHP > 0
/*
 * HP disk driver for RP0x+RM0x
 *
 * TODO:
 *	Check RM80 skip sector handling, esp when ECC's occur later
 *	Add reading of bad sector information and disk layout from sector 1
 *	Add bad sector forwarding code
 *	Check interaction with tape driver on same mba
 *	Check multiple drive handling
 */

#include "../h/param.h"
#include "../h/systm.h"
#include "../h/dk.h"
#include "../h/buf.h"
#include "../h/conf.h"
#include "../h/dir.h"
#include "../h/user.h"
#include "../h/map.h"
#include "../h/pte.h"
#include "../h/mba.h"
#include "../h/mtpr.h"
#include "../h/vm.h"
#include "../h/cmap.h"

#include "../h/hpreg.h"

/* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */
struct	size {
	daddr_t	nblocks;
	int	cyloff;
} hp_sizes[8] = {
	15884,	0,		/* A=cyl 0 thru 37 */
	33440,	38,		/* B=cyl 38 thru 117 */
	340670,	0,		/* C=cyl 0 thru 814 */
	0,	0,
	0,	0,
	0,	0,
	291346,	118,		/* G=cyl 118 thru 814 */
	0,	0,
}, rm_sizes[8] = {
	15884,	0,		/* A=cyl 0 thru 99 */
	33440,	100,		/* B=cyl 100 thru 309 */
	131680,	0,		/* C=cyl 0 thru 822 */
	2720,	291,
	0,	0,
	0,	0,
	82080,	310,		/* G=cyl 310 thru 822 */
	0,	0,
}, rm5_sizes[8] = {
	15884,	0,		/* A=cyl 0 thru 26 */
	33440,	27,		/* B=cyl 27 thru 81 */
	500992,	0,		/* C=cyl 0 thru 823 */
	15884,	562,		/* D=cyl 562 thru 588 */
	55936,	589,		/* E=cyl 589 thru 680 */
	86944,	681,		/* F=cyl 681 thru 823 */
	159296,	562,		/* G=cyl 562 thru 823 */
	291346,	82,		/* H=cyl 82 thru 561 */
}, rm80_sizes[8] = {
	15884,	0,		/* A=cyl 0 thru 36 */
	33440,	37,		/* B=cyl 37 thru 114 */
	242606,	0,		/* C=cyl 0 thru 558 */
	0,	0,
	0,	0,
	0,	0,
	82080,	115,		/* G=cyl 115 thru 304 */
	110236,	305,		/* H=cyl 305 thru 558 */
};
/* END OF STUFF WHICH SHOULD BE READ IN PER DISK */

#define	_hpSDIST	2
#define	_hpRDIST	3

int	hpSDIST = _hpSDIST;
int	hpRDIST = _hpRDIST;

short	hptypes[] =
	{ MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, 0 };
struct	mba_info *hpinfo[NHP];
int	hpdkinit(),hpustart(),hpstart(),hpdtint();
struct	mba_driver hpdriver =
	{ hpdkinit, hpustart, hpstart, hpdtint, 0, hptypes, hpinfo };

struct hpst {
	short	nsect;
	short	ntrak;
	short	nspc;
	short	ncyl;
	struct	size *sizes;
} hpst[] = {
	32,	5,	32*5,	823,	rm_sizes,	/* RM03 */
	32,	19,	32*19,	823,	rm5_sizes,	/* RM05 */
	22,	19,	22*19,	815,	hp_sizes,	/* RP06 */
	31,	14, 	31*14,	559,	rm80_sizes	/* RM80 */
};

u_char	hp_offset[16] = {
    HP_P400, HP_M400, HP_P400, HP_M400, HP_P800, HP_M800, HP_P800, HP_M800,
    HP_P1200, HP_M1200, HP_P1200, HP_M1200, 0, 0, 0, 0,
};

struct	buf	rhpbuf[NHP];
char	hprecal[NHP];

#define	b_cylin b_resid
 
#ifdef INTRLVE
daddr_t dkblock();
#endif
 
int	hpseek;

hpdkinit(mi)
	struct mba_info *mi;
{
	register struct hpst *st = &hpst[mi->mi_type];

	if (mi->mi_dk >= 0)
		dk_mspw[mi->mi_dk] = 1.0 / 60 / (st->nsect * 256);
}

hpstrategy(bp)
	register struct buf *bp;
{
	register struct mba_info *mi;
	register struct hpst *st;
	register int unit;
	long sz, bn;
	int xunit = minor(bp->b_dev) & 07;

	sz = bp->b_bcount;
	sz = (sz+511) >> 9;
	unit = dkunit(bp);
	if (unit >= NHP)
		goto bad;
	mi = hpinfo[unit];
	if (mi == 0 || mi->mi_alive == 0)
		goto bad;
	st = &hpst[mi->mi_type];
	if (bp->b_blkno < 0 ||
	    (bn = dkblock(bp))+sz > st->sizes[xunit].nblocks)
		goto bad;
	bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff;
	(void) spl5();
	disksort(&mi->mi_tab, bp);
	if (mi->mi_tab.b_active == 0)
		mbustart(mi);
	(void) spl0();
	return;

bad:
	bp->b_flags |= B_ERROR;
	iodone(bp);
	return;
}

hpustart(mi)
	register struct mba_info *mi;
{
	register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv;
	register struct buf *bp = mi->mi_tab.b_actf;
	register struct hpst *st;
	daddr_t bn;
	int sn, dist, flags;

	if ((hpaddr->hpcs1&HP_DVA) == 0)
		return (MBU_BUSY);
	if ((hpaddr->hpds & HP_VV) == 0) {
		hpaddr->hpcs1 = HP_DCLR|HP_GO;
		hpaddr->hpcs1 = HP_PRESET|HP_GO;
		hpaddr->hpof = HP_FMT22;
	}
	if (mi->mi_tab.b_active || mi->mi_hd->mh_ndrive == 1)
		return (MBU_DODATA);
	if ((hpaddr->hpds & (HP_DPR|HP_MOL)) != (HP_DPR|HP_MOL))
		return (MBU_DODATA);
	st = &hpst[mi->mi_type];
	bn = dkblock(bp);
	sn = bn%st->nspc;
	sn = (sn+st->nsect-hpSDIST)%st->nsect;
	if (bp->b_cylin == (hpaddr->hpdc & 0xffff)) {
		if (hpseek)
			return (MBU_DODATA);
		dist = ((hpaddr->hpla & 0xffff)>>6) - st->nsect + 1;
		if (dist < 0)
			dist += st->nsect;
		if (dist > st->nsect - hpRDIST)
			return (MBU_DODATA);
	} else
		hpaddr->hpdc = bp->b_cylin;
	if (hpseek)
		hpaddr->hpcs1 = HP_SEEK|HP_GO;
	else {
		hpaddr->hpda = sn;
		hpaddr->hpcs1 = HP_SEARCH|HP_GO;
	}
	return (MBU_STARTED);
}

hpstart(mi)
	register struct mba_info *mi;
{
	register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv;
	register struct buf *bp = mi->mi_tab.b_actf;
	register struct hpst *st = &hpst[mi->mi_type];
	daddr_t bn;
	int sn, tn;

	bn = dkblock(bp);
	sn = bn%st->nspc;
	tn = sn/st->nsect;
	sn %= st->nsect;
	if (mi->mi_tab.b_errcnt >= 16 && (bp->b_flags&B_READ) != 0) {
		hpaddr->hpof = hp_offset[mi->mi_tab.b_errcnt & 017] | HP_FMT22;
		hpaddr->hpcs1 = HP_OFFSET|HP_GO;
		while (hpaddr->hpds & HP_PIP)
			;
		mbclrattn(mi);
	}
	hpaddr->hpdc = bp->b_cylin;
	hpaddr->hpda = (tn << 8) + sn;
}

hpdtint(mi, mbasr)
	register struct mba_info *mi;
	int mbasr;
{
	register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv;
	register struct buf *bp = mi->mi_tab.b_actf;
	int retry = 0;

	if (hpaddr->hpds&HP_ERR || mbasr&MBAEBITS) {
		if (hpaddr->hper1&HP_WLE) {
			printf("hp%d: write locked\n", dkunit(bp));
			bp->b_flags |= B_ERROR;
		} else if (++mi->mi_tab.b_errcnt > 27 ||
		    mbasr & MBASR_HARD ||
		    hpaddr->hper1 & HPER1_HARD ||
		    hpaddr->hper2 & HPER2_HARD) {
			harderr(bp, "hp");
			printf("mbasr=%b er1=%b er2=%b\n",
			    mbasr, mbasr_bits,
			    hpaddr->hper1, HPER1_BITS,
			    hpaddr->hper2, HPER2_BITS);
			bp->b_flags |= B_ERROR;
#ifdef notdef
		} else if (hpaddr->hper2&HP_SSE) {
			hpecc(mi, 1);
			return (MBD_RESTARTED);
#endif
		} else if ((hpaddr->hper1&(HP_DCK|HP_ECH)) == HP_DCK) {
			if (hpecc(mi, 0))
				return (MBD_RESTARTED);
			/* else done */
		} else
			retry = 1;
		hpaddr->hpcs1 = HP_DCLR|HP_GO;
		if ((mi->mi_tab.b_errcnt&07) == 4) {
			hpaddr->hpcs1 = HP_RECAL|HP_GO;
			hprecal[mi->mi_unit] = 1;
			return (MBD_RESTARTED);
		}
		if (retry)
			return (MBD_RETRY);
	}
	if (hprecal[mi->mi_unit]) {
		hprecal[mi->mi_unit] = 0;
		return (MBD_RETRY);
	}
	bp->b_resid = -(mi->mi_mba->mba_bcr) & 0xffff;
	if (mi->mi_tab.b_errcnt > 16) {
		hpaddr->hpcs1 = HP_RTC|HP_GO;
		while (hpaddr->hpds & HP_PIP)
			;
		mbclrattn(mi);
	}
	hpaddr->hpcs1 = HP_RELEASE|HP_GO;
	return (MBD_DONE);
}

hpread(dev)
	dev_t dev;
{
	register int unit = minor(dev) >> 3;

	if (unit >= NHP)
		u.u_error = ENXIO;
	else
		physio(hpstrategy, &rhpbuf[unit], dev, B_READ, minphys);
}

hpwrite(dev)
	dev_t dev;
{
	register int unit = minor(dev) >> 3;

	if (unit >= NHP)
		u.u_error = ENXIO;
	else
		physio(hpstrategy, &rhpbuf[unit], dev, B_WRITE, minphys);
}

hpecc(mi, rm80sse)
	register struct mba_info *mi;
	int rm80sse;
{
	register struct mba_regs *mbp = mi->mi_mba;
	register struct hpdevice *rp = (struct hpdevice *)mi->mi_drv;
	register struct buf *bp = mi->mi_tab.b_actf;
	register struct hpst *st;
	register int i;
	caddr_t addr;
	int reg, bit, byte, npf, mask, o;
	int bn, cn, tn, sn;
	struct pte mpte;
	int bcr;

	bcr = mbp->mba_bcr & 0xffff;
	if (bcr)
		bcr |= 0xffff0000;		/* sxt */
	npf = btop(bcr + bp->b_bcount) - 1;
	reg = npf;
#ifdef notdef
	if (rm80sse) {
		rp->hpof |= HP_SSEI;
		reg--;		/* compensate in advance for reg-- below */
		goto sse;
	}
#endif
	o = (int)bp->b_un.b_addr & PGOFSET;
	printf("hp%d%c: soft ecc sn%d\n", dkunit(bp),
	    'a'+(minor(bp->b_dev)&07), bp->b_blkno + npf);
	mask = rp->hpec2&0xffff;
	i = (rp->hpec1&0xffff) - 1;		/* -1 makes 0 origin */
	bit = i&07;
	i = (i&~07)>>3;
	byte = i + o;
	while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) {
		mpte = mbp->mba_map[reg+btop(byte)];
		addr = ptob(mpte.pg_pfnum) + (byte & PGOFSET);
		putmemc(addr, getmemc(addr)^(mask<<bit));
		byte++;
		i++;
		bit -= 8;
	}
	if (bcr == 0)
		return (0);
#ifdef notdef
sse:
	if (rpof&HP_SSEI)
		rp->hpda = rp->hpda + 1;
	rp->hper1 = 0;
	rp->hpcs1 = HP_RCOM|HP_GO;
#else
sse:
	rp->hpcs1 = HP_DCLR|HP_GO;
	bn = dkblock(bp);
	st = &hpst[mi->mi_type];
	cn = bp->b_cylin;
	sn = bn%(st->nspc) + npf + 1;
	tn = sn/st->nsect;
	sn %= st->nsect;
	cn += tn/st->ntrak;
	tn %= st->ntrak;
#ifdef notdef
	if (rp->hpof&SSEI)
		sn++;
#endif
	rp->hpdc = cn;
	rp->hpda = (tn<<8) + sn;
	mbp->mba_sr = -1;
	mbp->mba_var = (int)ptob(reg+1) + o;
	rp->hpcs1 = HP_RCOM|HP_GO;
#endif
	return (1);
}

#define	DBSIZE	20

hpdump(dev)
	dev_t dev;
{
	register struct mba_info *mi;
	register struct mba_regs *mba;
	struct hpdevice *hpaddr;
	char *start;
	int num, unit;
	register struct hpst *st;

	num = maxfree;
	start = 0;
	unit = minor(dev) >> 3;
	if (unit >= NHP)
		return (ENXIO);
#define	phys(a,b)	((b)((int)(a)&0x7fffffff))
	mi = phys(hpinfo[unit],struct mba_info *);
	if (mi == 0 || mi->mi_alive == 0)
		return (ENXIO);
	mba = phys(mi->mi_hd, struct mba_hd *)->mh_physmba;
	mba->mba_cr = MBAINIT;
	hpaddr = (struct hpdevice *)&mba->mba_drv[mi->mi_drive];
	if ((hpaddr->hpds & HP_VV) == 0) {
		hpaddr->hpcs1 = HP_DCLR|HP_GO;
		hpaddr->hpcs1 = HP_PRESET|HP_GO;
		hpaddr->hpof = HP_FMT22;
	}
	st = &hpst[mi->mi_type];
	if (dumplo < 0 || dumplo + num >= st->sizes[minor(dev)&07].nblocks)
		return (EINVAL);
	while (num > 0) {
		register struct pte *hpte = mba->mba_map;
		register int i;
		int blk, cn, sn, tn;
		daddr_t bn;

		blk = num > DBSIZE ? DBSIZE : num;
		bn = dumplo + btop(start);
		cn = bn/st->nspc + st->sizes[minor(dev)&07].cyloff;
		sn = bn%st->nspc;
		tn = sn/st->nsect;
		sn = sn%st->nsect;
		hpaddr->hpdc = cn;
		hpaddr->hpda = (tn << 8) + sn;
		for (i = 0; i < blk; i++)
			*(int *)hpte++ = (btop(start)+i) | PG_V;
		mba->mba_sr = -1;
		mba->mba_bcr = -(blk*NBPG);
		mba->mba_var = 0;
		hpaddr->hpcs1 = HP_WCOM | HP_GO;
		while ((hpaddr->hpds & HP_DRY) == 0)
			;
		if (hpaddr->hpds&HP_ERR)
			return (EIO);
		start += blk*NBPG;
		num -= blk;
	}
	return (0);
}
#endif
Commit	Line	Data
8dddd61f	1	/* hp.c 4.23 81/03/06 */
04b9d53d	2
66b4fb09	3	#include "hp.h"
a5cc519e	4	#if NHP > 0
04b9d53d	5	/*
804f6eab	6	* HP disk driver for RP0x+RM0x
1b81ee79 BJ	7	*
1b81ee79 BJ	8	* TODO:
c9e9b65b	9	* Check RM80 skip sector handling, esp when ECC's occur later
1b81ee79 BJ	10	* Add reading of bad sector information and disk layout from sector 1
	11	* Add bad sector forwarding code
	12	* Check interaction with tape driver on same mba
	13	* Check multiple drive handling
04b9d53d BJ	14	*/
	15
	16	#include "../h/param.h"
	17	#include "../h/systm.h"
41888f16	18	#include "../h/dk.h"
04b9d53d BJ	19	#include "../h/buf.h"
	20	#include "../h/conf.h"
	21	#include "../h/dir.h"
	22	#include "../h/user.h"
	23	#include "../h/map.h"
80e7c811	24	#include "../h/pte.h"
04b9d53d BJ	25	#include "../h/mba.h"
04b9d53d BJ	26	#include "../h/mtpr.h"
80e7c811	27	#include "../h/vm.h"
e3b4b145	28	#include "../h/cmap.h"
04b9d53d	29
b81fd3e8	30	#include "../h/hpreg.h"
04b9d53d	31
b81fd3e8 BJ	32	/* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */
b81fd3e8 BJ	33	struct size {
04b9d53d BJ	34	daddr_t nblocks;
04b9d53d BJ	35	int cyloff;
b81fd3e8	36	} hp_sizes[8] = {
5c777efe BJ	37	15884, 0, /* A=cyl 0 thru 37 */
	38	33440, 38, /* B=cyl 38 thru 117 */
	39	340670, 0, /* C=cyl 0 thru 814 */
04b9d53d	40	0, 0,
04b9d53d BJ	41	0, 0,
04b9d53d BJ	42	0, 0,
5c777efe	43	291346, 118, /* G=cyl 118 thru 814 */
04b9d53d	44	0, 0,
04b9d53d	45	}, rm_sizes[8] = {
5c777efe BJ	46	15884, 0, /* A=cyl 0 thru 99 */
	47	33440, 100, /* B=cyl 100 thru 309 */
	48	131680, 0, /* C=cyl 0 thru 822 */
e3b4b145	49	2720, 291,
04b9d53d BJ	50	0, 0,
04b9d53d BJ	51	0, 0,
5c777efe	52	82080, 310, /* G=cyl 310 thru 822 */
04b9d53d	53	0, 0,
5c777efe BJ	54	}, rm5_sizes[8] = {
	55	15884, 0, /* A=cyl 0 thru 26 */
	56	33440, 27, /* B=cyl 27 thru 81 */
	57	500992, 0, /* C=cyl 0 thru 823 */
	58	15884, 562, /* D=cyl 562 thru 588 */
	59	55936, 589, /* E=cyl 589 thru 680 */
	60	86944, 681, /* F=cyl 681 thru 823 */
	61	159296, 562, /* G=cyl 562 thru 823 */
	62	291346, 82, /* H=cyl 82 thru 561 */
b81fd3e8 BJ	63	}, rm80_sizes[8] = {
	64	15884, 0, /* A=cyl 0 thru 36 */
	65	33440, 37, /* B=cyl 37 thru 114 */
	66	242606, 0, /* C=cyl 0 thru 558 */
	67	0, 0,
	68	0, 0,
	69	0, 0,
	70	82080, 115, /* G=cyl 115 thru 304 */
	71	110236, 305, /* H=cyl 305 thru 558 */
04b9d53d	72	};
b81fd3e8	73	/* END OF STUFF WHICH SHOULD BE READ IN PER DISK */
04b9d53d	74
b81fd3e8 BJ	75	#define _hpSDIST 2
	76	#define _hpRDIST 3
	77
	78	int hpSDIST = _hpSDIST;
	79	int hpRDIST = _hpRDIST;
	80
	81	short hptypes[] =
	82	{ MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, 0 };
	83	struct mba_info *hpinfo[NHP];
	84	int hpdkinit(),hpustart(),hpstart(),hpdtint();
	85	struct mba_driver hpdriver =
	86	{ hpdkinit, hpustart, hpstart, hpdtint, 0, hptypes, hpinfo };
	87
	88	struct hpst {
	89	short nsect;
	90	short ntrak;
	91	short nspc;
	92	short ncyl;
	93	struct size *sizes;
	94	} hpst[] = {
	95	32, 5, 325, 823, rm_sizes, / RM03 */
	96	32, 19, 3219, 823, rm5_sizes, / RM05 */
	97	22, 19, 2219, 815, hp_sizes, / RP06 */
	98	31, 14, 3114, 559, rm80_sizes / RM80 */
	99	};
	100
804f6eab BJ	101	u_char hp_offset[16] = {
	102	HP_P400, HP_M400, HP_P400, HP_M400, HP_P800, HP_M800, HP_P800, HP_M800,
	103	HP_P1200, HP_M1200, HP_P1200, HP_M1200, 0, 0, 0, 0,
04b9d53d BJ	104	};
04b9d53d BJ	105
804f6eab	106	struct buf rhpbuf[NHP];
3dbaa9da	107	char hprecal[NHP];
04b9d53d BJ	108
	109	#define b_cylin b_resid
	110
	111	#ifdef INTRLVE
	112	daddr_t dkblock();
	113	#endif
	114
71236e46 BJ	115	int hpseek;
	116
	117	hpdkinit(mi)
	118	struct mba_info *mi;
	119	{
	120	register struct hpst *st = &hpst[mi->mi_type];
	121
	122	if (mi->mi_dk >= 0)
7780575a	123	dk_mspw[mi->mi_dk] = 1.0 / 60 / (st->nsect * 256);
71236e46 BJ	124	}
71236e46 BJ	125
04b9d53d	126	hpstrategy(bp)
b81fd3e8	127	register struct buf *bp;
04b9d53d	128	{
b81fd3e8 BJ	129	register struct mba_info *mi;
	130	register struct hpst *st;
	131	register int unit;
04b9d53d	132	long sz, bn;
b81fd3e8	133	int xunit = minor(bp->b_dev) & 07;
04b9d53d	134
04b9d53d BJ	135	sz = bp->b_bcount;
	136	sz = (sz+511) >> 9;
	137	unit = dkunit(bp);
b81fd3e8 BJ	138	if (unit >= NHP)
	139	goto bad;
	140	mi = hpinfo[unit];
3f3a34c3	141	if (mi == 0 \|\| mi->mi_alive == 0)
b81fd3e8 BJ	142	goto bad;
	143	st = &hpst[mi->mi_type];
	144	if (bp->b_blkno < 0 \|\|
	145	(bn = dkblock(bp))+sz > st->sizes[xunit].nblocks)
	146	goto bad;
	147	bp->b_cylin = bn/st->nspc + st->sizes[xunit].cyloff;
81263dba	148	(void) spl5();
b81fd3e8 BJ	149	disksort(&mi->mi_tab, bp);
	150	if (mi->mi_tab.b_active == 0)
	151	mbustart(mi);
81263dba	152	(void) spl0();
b81fd3e8 BJ	153	return;
	154
	155	bad:
	156	bp->b_flags \|= B_ERROR;
	157	iodone(bp);
	158	return;
04b9d53d BJ	159	}
04b9d53d BJ	160
b81fd3e8 BJ	161	hpustart(mi)
b81fd3e8 BJ	162	register struct mba_info *mi;
04b9d53d	163	{
804f6eab	164	register struct hpdevice hpaddr = (struct hpdevice )mi->mi_drv;
b81fd3e8 BJ	165	register struct buf *bp = mi->mi_tab.b_actf;
b81fd3e8 BJ	166	register struct hpst *st;
04b9d53d	167	daddr_t bn;
b81fd3e8	168	int sn, dist, flags;
04b9d53d	169
804f6eab	170	if ((hpaddr->hpcs1&HP_DVA) == 0)
b81fd3e8	171	return (MBU_BUSY);
804f6eab BJ	172	if ((hpaddr->hpds & HP_VV) == 0) {
	173	hpaddr->hpcs1 = HP_DCLR\|HP_GO;
	174	hpaddr->hpcs1 = HP_PRESET\|HP_GO;
	175	hpaddr->hpof = HP_FMT22;
04b9d53d	176	}
71236e46	177	if (mi->mi_tab.b_active \|\| mi->mi_hd->mh_ndrive == 1)
b81fd3e8	178	return (MBU_DODATA);
804f6eab	179	if ((hpaddr->hpds & (HP_DPR\|HP_MOL)) != (HP_DPR\|HP_MOL))
b81fd3e8	180	return (MBU_DODATA);
3f3a34c3 BJ	181	st = &hpst[mi->mi_type];
	182	bn = dkblock(bp);
	183	sn = bn%st->nspc;
	184	sn = (sn+st->nsect-hpSDIST)%st->nsect;
b81fd3e8	185	if (bp->b_cylin == (hpaddr->hpdc & 0xffff)) {
71236e46	186	if (hpseek)
b81fd3e8	187	return (MBU_DODATA);
b81fd3e8 BJ	188	dist = ((hpaddr->hpla & 0xffff)>>6) - st->nsect + 1;
	189	if (dist < 0)
	190	dist += st->nsect;
	191	if (dist > st->nsect - hpRDIST)
	192	return (MBU_DODATA);
0801d37f BJ	193	} else
0801d37f BJ	194	hpaddr->hpdc = bp->b_cylin;
71236e46	195	if (hpseek)
804f6eab	196	hpaddr->hpcs1 = HP_SEEK\|HP_GO;
41888f16 BJ	197	else {
41888f16 BJ	198	hpaddr->hpda = sn;
804f6eab	199	hpaddr->hpcs1 = HP_SEARCH\|HP_GO;
41888f16	200	}
b81fd3e8	201	return (MBU_STARTED);
04b9d53d BJ	202	}
04b9d53d BJ	203
b81fd3e8 BJ	204	hpstart(mi)
b81fd3e8 BJ	205	register struct mba_info *mi;
04b9d53d	206	{
804f6eab	207	register struct hpdevice hpaddr = (struct hpdevice )mi->mi_drv;
b81fd3e8 BJ	208	register struct buf *bp = mi->mi_tab.b_actf;
b81fd3e8 BJ	209	register struct hpst *st = &hpst[mi->mi_type];
04b9d53d	210	daddr_t bn;
b81fd3e8	211	int sn, tn;
04b9d53d	212
04b9d53d	213	bn = dkblock(bp);
b81fd3e8 BJ	214	sn = bn%st->nspc;
b81fd3e8 BJ	215	tn = sn/st->nsect;
3f3a34c3	216	sn %= st->nsect;
b81fd3e8	217	if (mi->mi_tab.b_errcnt >= 16 && (bp->b_flags&B_READ) != 0) {
804f6eab BJ	218	hpaddr->hpof = hp_offset[mi->mi_tab.b_errcnt & 017] \| HP_FMT22;
	219	hpaddr->hpcs1 = HP_OFFSET\|HP_GO;
	220	while (hpaddr->hpds & HP_PIP)
04b9d53d	221	;
b81fd3e8	222	mbclrattn(mi);
04b9d53d	223	}
b81fd3e8	224	hpaddr->hpdc = bp->b_cylin;
04b9d53d	225	hpaddr->hpda = (tn << 8) + sn;
04b9d53d BJ	226	}
04b9d53d BJ	227
736772ef	228	hpdtint(mi, mbasr)
b81fd3e8	229	register struct mba_info *mi;
736772ef	230	int mbasr;
04b9d53d	231	{
804f6eab	232	register struct hpdevice hpaddr = (struct hpdevice )mi->mi_drv;
b81fd3e8	233	register struct buf *bp = mi->mi_tab.b_actf;
e34bc1ef	234	int retry = 0;
b81fd3e8	235
e34bc1ef	236	if (hpaddr->hpds&HP_ERR \|\| mbasr&MBAEBITS) {
3dbaa9da	237	if (hpaddr->hper1&HP_WLE) {
fd2cb420	238	printf("hp%d: write locked\n", dkunit(bp));
e34bc1ef BJ	239	bp->b_flags \|= B_ERROR;
	240	} else if (++mi->mi_tab.b_errcnt > 27 \|\|
	241	mbasr & MBASR_HARD \|\|
	242	hpaddr->hper1 & HPER1_HARD \|\|
	243	hpaddr->hper2 & HPER2_HARD) {
fd2cb420 BJ	244	harderr(bp, "hp");
fd2cb420 BJ	245	printf("mbasr=%b er1=%b er2=%b\n",
3dbaa9da	246	mbasr, mbasr_bits,
e34bc1ef BJ	247	hpaddr->hper1, HPER1_BITS,
e34bc1ef BJ	248	hpaddr->hper2, HPER2_BITS);
b81fd3e8	249	bp->b_flags \|= B_ERROR;
c9e9b65b BJ	250	#ifdef notdef
	251	} else if (hpaddr->hper2&HP_SSE) {
	252	hpecc(mi, 1);
	253	return (MBD_RESTARTED);
	254	#endif
e34bc1ef	255	} else if ((hpaddr->hper1&(HP_DCK\|HP_ECH)) == HP_DCK) {
c9e9b65b	256	if (hpecc(mi, 0))
e34bc1ef BJ	257	return (MBD_RESTARTED);
	258	/* else done */
	259	} else
	260	retry = 1;
	261	hpaddr->hpcs1 = HP_DCLR\|HP_GO;
	262	if ((mi->mi_tab.b_errcnt&07) == 4) {
	263	hpaddr->hpcs1 = HP_RECAL\|HP_GO;
3dbaa9da BJ	264	hprecal[mi->mi_unit] = 1;
3dbaa9da BJ	265	return (MBD_RESTARTED);
04b9d53d	266	}
e34bc1ef BJ	267	if (retry)
	268	return (MBD_RETRY);
	269	}
3dbaa9da BJ	270	if (hprecal[mi->mi_unit]) {
	271	hprecal[mi->mi_unit] = 0;
	272	return (MBD_RETRY);
	273	}
b81fd3e8	274	bp->b_resid = -(mi->mi_mba->mba_bcr) & 0xffff;
e34bc1ef	275	if (mi->mi_tab.b_errcnt > 16) {
804f6eab BJ	276	hpaddr->hpcs1 = HP_RTC\|HP_GO;
804f6eab BJ	277	while (hpaddr->hpds & HP_PIP)
b81fd3e8 BJ	278	;
b81fd3e8 BJ	279	mbclrattn(mi);
04b9d53d	280	}
804f6eab	281	hpaddr->hpcs1 = HP_RELEASE\|HP_GO;
b81fd3e8	282	return (MBD_DONE);
04b9d53d BJ	283	}
	284
	285	hpread(dev)
804f6eab	286	dev_t dev;
04b9d53d	287	{
804f6eab	288	register int unit = minor(dev) >> 3;
04b9d53d	289
804f6eab BJ	290	if (unit >= NHP)
	291	u.u_error = ENXIO;
	292	else
	293	physio(hpstrategy, &rhpbuf[unit], dev, B_READ, minphys);
04b9d53d BJ	294	}
	295
	296	hpwrite(dev)
804f6eab	297	dev_t dev;
04b9d53d	298	{
804f6eab	299	register int unit = minor(dev) >> 3;
04b9d53d	300
804f6eab BJ	301	if (unit >= NHP)
	302	u.u_error = ENXIO;
	303	else
	304	physio(hpstrategy, &rhpbuf[unit], dev, B_WRITE, minphys);
04b9d53d BJ	305	}
04b9d53d BJ	306
c9e9b65b	307	hpecc(mi, rm80sse)
b81fd3e8	308	register struct mba_info *mi;
c9e9b65b	309	int rm80sse;
04b9d53d	310	{
b81fd3e8	311	register struct mba_regs *mbp = mi->mi_mba;
804f6eab	312	register struct hpdevice rp = (struct hpdevice )mi->mi_drv;
b81fd3e8 BJ	313	register struct buf *bp = mi->mi_tab.b_actf;
b81fd3e8 BJ	314	register struct hpst *st;
80e7c811 BJ	315	register int i;
	316	caddr_t addr;
	317	int reg, bit, byte, npf, mask, o;
b81fd3e8	318	int bn, cn, tn, sn;
80e7c811	319	struct pte mpte;
fa1d69d6	320	int bcr;
80e7c811	321
fa1d69d6 BJ	322	bcr = mbp->mba_bcr & 0xffff;
	323	if (bcr)
	324	bcr \|= 0xffff0000; /* sxt */
acecdc5c	325	npf = btop(bcr + bp->b_bcount) - 1;
f9b6e695	326	reg = npf;
c9e9b65b BJ	327	#ifdef notdef
	328	if (rm80sse) {
	329	rp->hpof \|= HP_SSEI;
	330	reg--; /* compensate in advance for reg-- below */
	331	goto sse;
	332	}
	333	#endif
80e7c811	334	o = (int)bp->b_un.b_addr & PGOFSET;
8dddd61f	335	printf("hp%d%c: soft ecc sn%d\n", dkunit(bp),
e34bc1ef	336	'a'+(minor(bp->b_dev)&07), bp->b_blkno + npf);
04b9d53d	337	mask = rp->hpec2&0xffff;
80e7c811	338	i = (rp->hpec1&0xffff) - 1; /* -1 makes 0 origin */
acecdc5c	339	bit = i&07;
80e7c811 BJ	340	i = (i&~07)>>3;
80e7c811 BJ	341	byte = i + o;
80e7c811 BJ	342	while (i < 512 && (int)ptob(npf)+i < bp->b_bcount && bit > -11) {
	343	mpte = mbp->mba_map[reg+btop(byte)];
	344	addr = ptob(mpte.pg_pfnum) + (byte & PGOFSET);
	345	putmemc(addr, getmemc(addr)^(mask<<bit));
	346	byte++;
	347	i++;
	348	bit -= 8;
04b9d53d	349	}
acecdc5c	350	if (bcr == 0)
80e7c811	351	return (0);
804f6eab	352	#ifdef notdef
c9e9b65b BJ	353	sse:
	354	if (rpof&HP_SSEI)
	355	rp->hpda = rp->hpda + 1;
804f6eab BJ	356	rp->hper1 = 0;
	357	rp->hpcs1 = HP_RCOM\|HP_GO;
	358	#else
c9e9b65b	359	sse:
804f6eab	360	rp->hpcs1 = HP_DCLR\|HP_GO;
80e7c811	361	bn = dkblock(bp);
b81fd3e8	362	st = &hpst[mi->mi_type];
80e7c811	363	cn = bp->b_cylin;
b81fd3e8 BJ	364	sn = bn%(st->nspc) + npf + 1;
	365	tn = sn/st->nsect;
	366	sn %= st->nsect;
	367	cn += tn/st->ntrak;
	368	tn %= st->ntrak;
c9e9b65b BJ	369	#ifdef notdef
	370	if (rp->hpof&SSEI)
	371	sn++;
	372	#endif
80e7c811 BJ	373	rp->hpdc = cn;
	374	rp->hpda = (tn<<8) + sn;
	375	mbp->mba_sr = -1;
	376	mbp->mba_var = (int)ptob(reg+1) + o;
804f6eab BJ	377	rp->hpcs1 = HP_RCOM\|HP_GO;
804f6eab BJ	378	#endif
80e7c811	379	return (1);
04b9d53d	380	}
e3b4b145 BJ	381
	382	#define DBSIZE 20
	383
	384	hpdump(dev)
	385	dev_t dev;
	386	{
b81fd3e8 BJ	387	register struct mba_info *mi;
b81fd3e8 BJ	388	register struct mba_regs *mba;
804f6eab	389	struct hpdevice *hpaddr;
e3b4b145	390	char *start;
b81fd3e8 BJ	391	int num, unit;
b81fd3e8 BJ	392	register struct hpst *st;
e3b4b145 BJ	393
	394	num = maxfree;
	395	start = 0;
	396	unit = minor(dev) >> 3;
1b81ee79 BJ	397	if (unit >= NHP)
1b81ee79 BJ	398	return (ENXIO);
b81fd3e8 BJ	399	#define phys(a,b) ((b)((int)(a)&0x7fffffff))
b81fd3e8 BJ	400	mi = phys(hpinfo[unit],struct mba_info *);
1b81ee79 BJ	401	if (mi == 0 \|\| mi->mi_alive == 0)
1b81ee79 BJ	402	return (ENXIO);
b81fd3e8 BJ	403	mba = phys(mi->mi_hd, struct mba_hd *)->mh_physmba;
b81fd3e8 BJ	404	mba->mba_cr = MBAINIT;
804f6eab BJ	405	hpaddr = (struct hpdevice *)&mba->mba_drv[mi->mi_drive];
	406	if ((hpaddr->hpds & HP_VV) == 0) {
	407	hpaddr->hpcs1 = HP_DCLR\|HP_GO;
	408	hpaddr->hpcs1 = HP_PRESET\|HP_GO;
	409	hpaddr->hpof = HP_FMT22;
e3b4b145	410	}
b81fd3e8	411	st = &hpst[mi->mi_type];
1b81ee79 BJ	412	if (dumplo < 0 \|\| dumplo + num >= st->sizes[minor(dev)&07].nblocks)
1b81ee79 BJ	413	return (EINVAL);
e3b4b145	414	while (num > 0) {
b81fd3e8	415	register struct pte *hpte = mba->mba_map;
e3b4b145	416	register int i;
b81fd3e8	417	int blk, cn, sn, tn;
e3b4b145 BJ	418	daddr_t bn;
	419
	420	blk = num > DBSIZE ? DBSIZE : num;
	421	bn = dumplo + btop(start);
b81fd3e8 BJ	422	cn = bn/st->nspc + st->sizes[minor(dev)&07].cyloff;
	423	sn = bn%st->nspc;
	424	tn = sn/st->nsect;
	425	sn = sn%st->nsect;
e3b4b145 BJ	426	hpaddr->hpdc = cn;
	427	hpaddr->hpda = (tn << 8) + sn;
	428	for (i = 0; i < blk; i++)
	429	(int )hpte++ = (btop(start)+i) \| PG_V;
b81fd3e8 BJ	430	mba->mba_sr = -1;
	431	mba->mba_bcr = -(blk*NBPG);
	432	mba->mba_var = 0;
804f6eab BJ	433	hpaddr->hpcs1 = HP_WCOM \| HP_GO;
804f6eab BJ	434	while ((hpaddr->hpds & HP_DRY) == 0)
e3b4b145	435	;
1b81ee79 BJ	436	if (hpaddr->hpds&HP_ERR)
1b81ee79 BJ	437	return (EIO);
e3b4b145 BJ	438	start += blk*NBPG;
	439	num -= blk;
	440	}
	441	return (0);
	442	}
a5cc519e	443	#endif