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dkio.h in vax
[unix-history] / usr / src / sys / vax / mba / hp.c
/* hp.c 4.57 82/10/31 */
#ifdef HPDEBUG
int hpdebug;
#endif
#ifdef HPBDEBUG
int hpbdebug;
#endif
#include "hp.h"
#if NHP > 0
/*
* HP disk driver for RP0x+RMxx+ML11
*
* TODO:
* check RM80 skip sector handling when ECC's occur later
* check offset recovery handling
* see if DCLR and/or RELEASE set attention status
* print bits of mr && mr2 symbolically
*/
#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 "../vax/mtpr.h"
#include "../h/vm.h"
#include "../h/cmap.h"
#include "../h/dkbad.h"
#include "../h/ioctl.h"
#include "../h/uio.h"
#include "../vax/dkio.h"
#include "../vaxmba/mbareg.h"
#include "../vaxmba/mbavar.h"
#include "../vaxmba/hpreg.h"
/* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */
struct size {
daddr_t nblocks;
int cyloff;
} hp6_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,
#ifndef NOBADSECT
291280, 118, /* G=cyl 118 thru 814 */
#else
291346, 118,
#endif
0, 0,
}, rm3_sizes[8] = {
15884, 0, /* A=cyl 0 thru 99 */
33440, 100, /* B=cyl 100 thru 309 */
131680, 0, /* C=cyl 0 thru 822 */
0, 0,
0, 0,
0, 0,
#ifndef NOBADSECT
81984, 310, /* G=cyl 310 thru 822 */
#else
82080, 310,
#endif
0, 0,
}, rm5_sizes[8] = {
#ifndef CAD
15884, 0, /* A=cyl 0 thru 26 */
33440, 27, /* B=cyl 27 thru 81 */
500384, 0, /* C=cyl 0 thru 822 */
15884, 562, /* D=cyl 562 thru 588 */
55936, 589, /* E=cyl 589 thru 680 */
#ifndef NOBADSECT
86240, 681, /* F=cyl 681 thru 822 */
158592, 562, /* G=cyl 562 thru 822 */
#else
86336, 681,
158688, 562,
#endif
291346, 82, /* H=cyl 82 thru 561 */
#else
15884, 0, /* A=cyl 0 thru 26 */
33440, 27, /* B=cyl 27 thru 81 */
495520, 0, /* C=cyl 0 thru 814 */
15884, 562, /* D=cyl 562 thru 588 */
55936, 589, /* E=cyl 589 thru 680 */
#ifndef NOBADSECT
81376, 681, /* F=cyl 681 thru 814 */
153728, 562, /* G=cyl 562 thru 814 */
#else
81472, 681,
153824, 562,
#endif
291346, 82, /* H=cyl 82 thru 561 */
#endif
}, 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 */
110143, 305, /* H=cyl 305 thru 558 */
}, hp7_sizes[8] = {
15884, 0, /* A=cyl 0 thru 9 */
64000, 10, /* B=cyl 10 thru 49 */
1008000,0, /* C=cyl 0 thru 629 */
15884, 330, /* D=cyl 330 thru 339 */
256000, 340, /* E=cyl 340 thru 499 */
207850, 500, /* F=cyl 500 thru 629 */
479850, 330, /* G=cyl 330 thru 629 */
448000, 50, /* H=cyl 50 thru 329 */
}, si9775_sizes[8] = {
16640, 0, /* A=cyl 0 thru 12 */
34560, 13, /* B=cyl 13 thru 39 */
1079040, 0, /* C=cyl 0 thru 842 - whole disk */
0, 0, /* D unused */
0, 0, /* E unused */
0, 0, /* F unused */
513280, 40, /* G=cyl 40 thru 440 */
513280, 441, /* H=cyl 441 thru 841 */
}, si9730_sizes[8] = {
15884, 0, /* A=cyl 0 thru 49 */
33440, 50, /* B=cyl 50 thru 154 */
263360, 0, /* C=cyl 0 thru 822 */
0, 0,
0, 0,
0, 0,
0, 0,
#ifndef NOBADSECT
213664, 155, /* H=cyl 155 thru 822 */
#else
213760, 155,
#endif
}, hpam_sizes[8] = {
15884, 0, /* A=cyl 0 thru 31 */
33440, 32, /* B=cyl 32 thru 97 */
524288, 0, /* C=cyl 0 thru 1023 */
27786, 668,
27786, 723,
125440, 778,
181760, 668, /* G=cyl 668 thru 1022 */
291346, 98, /* H=cyl 98 thru 667 */
};
/* END OF STUFF WHICH SHOULD BE READ IN PER DISK */
#define _hpSDIST 2
#define _hpRDIST 3
int hpSDIST = _hpSDIST;
int hpRDIST = _hpRDIST;
/*
* Table for converting Massbus drive types into
* indices into the partition tables. Slots are
* left for those drives devined from other means
* (e.g. SI, AMPEX, etc.).
*/
short hptypes[] = {
#define HPDT_RM03 0
MBDT_RM03,
#define HPDT_RM05 1
MBDT_RM05,
#define HPDT_RP06 2
MBDT_RP06,
#define HPDT_RM80 3
MBDT_RM80,
#define HPDT_RP05 4
MBDT_RP05,
#define HPDT_RP07 5
MBDT_RP07,
#define HPDT_ML11A 6
MBDT_ML11A,
#define HPDT_ML11B 7
MBDT_ML11B,
#define HPDT_9775 8
-1,
#define HPDT_9730 9
-1,
#define HPDT_CAPRICORN 10
-1,
#define HPDT_RM02 11
MBDT_RM02, /* beware, actually capricorn */
0
};
struct mba_device *hpinfo[NHP];
int hpattach(),hpustart(),hpstart(),hpdtint();
struct mba_driver hpdriver =
{ hpattach, 0, hpustart, hpstart, hpdtint, 0,
hptypes, "hp", 0, hpinfo };
struct hpst {
short nsect;
short ntrak;
short nspc;
short ncyl;
struct size *sizes;
} hpst[] = {
32, 5, 32*5, 823, rm3_sizes, /* RM03 */
32, 19, 32*19, 823, rm5_sizes, /* RM05 */
22, 19, 22*19, 815, hp6_sizes, /* RP06 */
31, 14, 31*14, 559, rm80_sizes, /* RM80 */
22, 19, 22*19, 411, hp6_sizes, /* RP05 */
50, 32, 50*32, 630, hp7_sizes, /* RP07 */
1, 1, 1, 1, 0, /* ML11A */
1, 1, 1, 1, 0, /* ML11B */
32, 40, 32*40, 843, si9775_sizes, /* 9775 */
32, 10, 32*10, 823, si9730_sizes, /* 9730 */
32, 16, 32*16, 1024, hpam_sizes, /* AMPEX capricorn */
};
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,
};
struct buf rhpbuf[NHP];
#ifndef NOBADSECT
struct buf bhpbuf[NHP];
struct dkbad hpbad[NHP];
#endif
/* SHOULD CONSOLIDATE ALL THIS STUFF INTO A STRUCTURE */
char hpinit[NHP];
char hprecal[NHP];
char hphdr[NHP];
daddr_t mlsize[NHP];
#define b_cylin b_resid
/* #define ML11 0 to remove ML11 support */
#define ML11 (hptypes[mi->mi_type] == MBDT_ML11A)
#define RP06 (hptypes[mi->mi_type] <= MBDT_RP06)
#define RM80 (hptypes[mi->mi_type] == MBDT_RM80)
#ifdef INTRLVE
daddr_t dkblock();
#endif
int hpseek;
/*ARGSUSED*/
hpattach(mi, slave)
struct mba_device *mi;
{
register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv;
switch (mi->mi_type) {
/*
* Model-byte processing for SI 9400 controllers.
* NB: Only deals with RM03 and RM05 emulations.
*/
case HPDT_RM03:
case HPDT_RM05: {
register int hpsn;
hpsn = hpaddr->hpsn;
if ((hpsn & SIMB_LU) != mi->mi_drive)
break;
switch ((hpsn & SIMB_MB) & ~(SIMB_S6|SIRM03|SIRM05)) {
case SI9775D:
printf("hp%d: si 9775 (direct)\n", mi->mi_unit);
mi->mi_type = HPDT_9775;
break;
case SI9730D:
printf("hp%d: si 9730 (direct)\n", mi->mi_unit);
mi->mi_type = HPDT_9730;
break;
#ifdef CAD
/*
* AMPEX 9300, SI Combination needs a have the drive cleared
* before we start. We do not know why, but tests show
* that the recalibrate fixes the problem.
*/
case SI9766:
printf("hp%d: 9776/9300\n", mi->mi_unit);
mi->mi_type = HPDT_RM05;
hpaddr->hpcs1 = HP_RECAL|HP_GO;
DELAY(100000);
break;
case SI9762:
printf("hp%d: 9762\n", mi->mi_unit);
mi->mi_type = HPDT_RM03;
break;
#endif
}
break;
}
/*
* CAPRICORN KLUDGE...poke the holding register
* to find out the number of tracks. If it's 15
* we believe it's a Capricorn.
*/
case HPDT_RM02:
hpaddr->hpcs1 = HP_NOP;
hpaddr->hphr = HPHR_MAXTRAK;
if ((hpaddr->hphr&0xffff) == 15) {
printf("hp%d: capricorn\n", mi->mi_unit);
mi->mi_type = HPDT_CAPRICORN;
}
hpaddr->hpcs1 = HP_DCLR|HP_GO;
break;
case HPDT_ML11A:
case HPDT_ML11B: {
register int trt, sz;
sz = hpaddr->hpmr & HPMR_SZ;
if ((hpaddr->hpmr & HPMR_ARRTYP) == 0)
sz >>= 2;
mlsize[mi->mi_unit] = sz;
if (mi->mi_dk >= 0) {
trt = (hpaddr->hpmr & HPMR_TRT) >> 8;
dk_mspw[mi->mi_dk] = 1.0 / (1<<(20-trt));
}
/* A CHEAT - ML11B D.T. SHOULD == ML11A */
mi->mi_type = HPDT_ML11A;
break;
}
}
if (!ML11 && mi->mi_dk >= 0) {
register struct hpst *st = &hpst[mi->mi_type];
dk_mspw[mi->mi_dk] = 1.0 / 60 / (st->nsect * 256);
}
}
hpopen(dev)
dev_t dev;
{
register int unit = minor(dev) >> 3;
register struct mba_device *mi;
if (unit >= NHP || (mi = hpinfo[unit]) == 0 || mi->mi_alive == 0)
return (ENXIO);
return (0);
}
hpstrategy(bp)
register struct buf *bp;
{
register struct mba_device *mi;
register struct hpst *st;
register int unit;
long sz, bn;
int xunit = minor(bp->b_dev) & 07;
int s;
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 (ML11) {
if (bp->b_blkno < 0 ||
dkblock(bp)+sz > mlsize[mi->mi_unit])
goto bad;
bp->b_cylin = 0;
} else {
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;
}
s = spl5();
disksort(&mi->mi_tab, bp);
if (mi->mi_tab.b_active == 0)
mbustart(mi);
splx(s);
return;
bad:
bp->b_flags |= B_ERROR;
iodone(bp);
return;
}
hpustart(mi)
register struct mba_device *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, dist;
hpaddr->hpcs1 = 0;
if ((hpaddr->hpcs1&HP_DVA) == 0)
return (MBU_BUSY);
if ((hpaddr->hpds & HPDS_VV) == 0 || hpinit[mi->mi_unit] == 0) {
#ifndef NOBADSECT
struct buf *bbp = &bhpbuf[mi->mi_unit];
#endif
hpinit[mi->mi_unit] = 1;
hpaddr->hpcs1 = HP_DCLR|HP_GO;
if (mi->mi_mba->mba_drv[0].mbd_as & (1<<mi->mi_drive))
printf("DCLR attn\n");
hpaddr->hpcs1 = HP_PRESET|HP_GO;
if (!ML11)
hpaddr->hpof = HPOF_FMT22;
mbclrattn(mi);
#ifndef NOBADSECT
if (!ML11) {
bbp->b_flags = B_READ|B_BUSY;
bbp->b_dev = bp->b_dev;
bbp->b_bcount = 512;
bbp->b_un.b_addr = (caddr_t)&hpbad[mi->mi_unit];
bbp->b_blkno = st->ncyl*st->nspc - st->nsect;
bbp->b_cylin = st->ncyl - 1;
mi->mi_tab.b_actf = bbp;
bbp->av_forw = bp;
bp = bbp;
}
#endif
}
if (mi->mi_tab.b_active || mi->mi_hd->mh_ndrive == 1)
return (MBU_DODATA);
if (ML11)
return (MBU_DODATA);
if ((hpaddr->hpds & HPDS_DREADY) != HPDS_DREADY)
return (MBU_DODATA);
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_device *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);
if (ML11)
hpaddr->hpda = bn;
else {
sn = bn%st->nspc;
tn = sn/st->nsect;
sn %= st->nsect;
hpaddr->hpdc = bp->b_cylin;
hpaddr->hpda = (tn << 8) + sn;
}
if (hphdr[mi->mi_unit]) {
if (bp->b_flags & B_READ)
return (HP_RHDR|HP_GO);
else
return (HP_WHDR|HP_GO);
}
return (0);
}
hpdtint(mi, mbsr)
register struct mba_device *mi;
int mbsr;
{
register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv;
register struct buf *bp = mi->mi_tab.b_actf;
register int er1, er2;
int retry = 0;
#ifndef NOBADSECT
if (bp->b_flags&B_BAD) {
if (hpecc(mi, CONT))
return(MBD_RESTARTED);
}
#endif
if (hpaddr->hpds&HPDS_ERR || mbsr&MBSR_EBITS) {
#ifdef HPDEBUG
if (hpdebug) {
int dc = hpaddr->hpdc, da = hpaddr->hpda;
printf("hperr: bp %x cyl %d blk %d as %o ",
bp, bp->b_cylin, bp->b_blkno,
hpaddr->hpas&0xff);
printf("dc %x da %x\n",dc&0xffff, da&0xffff);
printf("errcnt %d ", mi->mi_tab.b_errcnt);
printf("mbsr=%b ", mbsr, mbsr_bits);
printf("er1=%b er2=%b\n",
hpaddr->hper1, HPER1_BITS,
hpaddr->hper2, HPER2_BITS);
DELAY(1000000);
}
#endif
er1 = hpaddr->hper1;
er2 = hpaddr->hper2;
if (er1 & HPER1_HCRC) {
er1 &= ~(HPER1_HCE|HPER1_FER);
er2 &= ~HPER2_BSE;
}
if (er1&HPER1_WLE) {
printf("hp%d: write locked\n", dkunit(bp));
bp->b_flags |= B_ERROR;
} else if ((er1&0xffff) == HPER1_FER && RP06 &&
hphdr[mi->mi_unit] == 0) {
#ifndef NOBADSECT
if (hpecc(mi, BSE))
return(MBD_RESTARTED);
else
#endif
goto hard;
} else if (++mi->mi_tab.b_errcnt > 27 ||
mbsr & MBSR_HARD ||
er1 & HPER1_HARD ||
hphdr[mi->mi_unit] ||
(!ML11 && (er2 & HPER2_HARD))) {
hard:
harderr(bp, "hp");
if (mbsr & (MBSR_EBITS &~ (MBSR_DTABT|MBSR_MBEXC)))
printf("mbsr=%b ", mbsr, mbsr_bits);
printf("er1=%b er2=%b",
hpaddr->hper1, HPER1_BITS,
hpaddr->hper2, HPER2_BITS);
if (hpaddr->hpmr)
printf(" mr=%o", hpaddr->hpmr&0xffff);
if (hpaddr->hpmr2)
printf(" mr2=%o", hpaddr->hpmr2&0xffff);
printf("\n");
bp->b_flags |= B_ERROR;
hprecal[mi->mi_unit] = 0;
} else if ((er2 & HPER2_BSE) && !ML11) {
#ifndef NOBADSECT
if (hpecc(mi, BSE))
return(MBD_RESTARTED);
else
#endif
goto hard;
} else if (RM80 && er2&HPER2_SSE) {
(void) hpecc(mi, SSE);
return (MBD_RESTARTED);
} else if ((er1&(HPER1_DCK|HPER1_ECH))==HPER1_DCK) {
if (hpecc(mi, ECC))
return (MBD_RESTARTED);
/* else done */
} else
retry = 1;
hpaddr->hpcs1 = HP_DCLR|HP_GO;
if (ML11) {
if (mi->mi_tab.b_errcnt >= 16)
goto hard;
} else 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);
}
#ifdef HPDEBUG
else
if (hpdebug && hprecal[mi->mi_unit]) {
printf("recal %d ", hprecal[mi->mi_unit]);
printf("errcnt %d\n", mi->mi_tab.b_errcnt);
printf("mbsr=%b ", mbsr, mbsr_bits);
printf("er1=%b er2=%b\n",
hpaddr->hper1, HPER1_BITS,
hpaddr->hper2, HPER2_BITS);
}
#endif
switch (hprecal[mi->mi_unit]) {
case 1:
hpaddr->hpdc = bp->b_cylin;
hpaddr->hpcs1 = HP_SEEK|HP_GO;
hprecal[mi->mi_unit]++;
return (MBD_RESTARTED);
case 2:
if (mi->mi_tab.b_errcnt < 16 ||
(bp->b_flags & B_READ) == 0)
goto donerecal;
hpaddr->hpof = hp_offset[mi->mi_tab.b_errcnt & 017]|HPOF_FMT22;
hpaddr->hpcs1 = HP_OFFSET|HP_GO;
hprecal[mi->mi_unit]++;
return (MBD_RESTARTED);
donerecal:
case 3:
hprecal[mi->mi_unit] = 0;
return (MBD_RETRY);
}
hphdr[mi->mi_unit] = 0;
bp->b_resid = -(mi->mi_mba->mba_bcr) & 0xffff;
if (mi->mi_tab.b_errcnt >= 16) {
/*
* This is fast and occurs rarely; we don't
* bother with interrupts.
*/
hpaddr->hpcs1 = HP_RTC|HP_GO;
while (hpaddr->hpds & HPDS_PIP)
;
mbclrattn(mi);
}
if (!ML11) {
hpaddr->hpof = HPOF_FMT22;
hpaddr->hpcs1 = HP_RELEASE|HP_GO;
}
return (MBD_DONE);
}
hpread(dev, uio)
dev_t dev;
struct uio *uio;
{
register int unit = minor(dev) >> 3;
if (unit >= NHP)
return (ENXIO);
return (physio(hpstrategy, &rhpbuf[unit], dev, B_READ, minphys, uio));
}
hpwrite(dev, uio)
dev_t dev;
struct uio *uio;
{
register int unit = minor(dev) >> 3;
if (unit >= NHP)
return (ENXIO);
return (physio(hpstrategy, &rhpbuf[unit], dev, B_WRITE, minphys, uio));
}
/*ARGSUSED*/
hpioctl(dev, cmd, data, flag)
dev_t dev;
int cmd;
caddr_t data;
int flag;
{
switch (cmd) {
case DKIOCHDR: /* do header read/write */
hphdr[minor(dev)>>3] = 1;
return (0);
default:
return (ENXIO);
}
}
hpecc(mi, flag)
register struct mba_device *mi;
int flag;
{
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 = &hpst[mi->mi_type];
int npf, o;
int bn, cn, tn, sn;
int bcr;
bcr = mbp->mba_bcr & 0xffff;
if (bcr)
bcr |= 0xffff0000; /* sxt */
#ifndef NOBADSECT
if (flag == CONT)
npf = bp->b_error;
else
#endif
npf = btop(bcr + bp->b_bcount);
o = (int)bp->b_un.b_addr & PGOFSET;
bn = dkblock(bp);
cn = bp->b_cylin;
sn = bn%(st->nspc) + npf;
tn = sn/st->nsect;
sn %= st->nsect;
cn += tn/st->ntrak;
tn %= st->ntrak;
switch (flag) {
case ECC:
{
register int i;
caddr_t addr;
struct pte mpte;
int bit, byte, mask;
npf--; /* because block in error is previous block */
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[npf+btop(byte)];
addr = ptob(mpte.pg_pfnum) + (byte & PGOFSET);
putmemc(addr, getmemc(addr)^(mask<<bit));
byte++;
i++;
bit -= 8;
}
if (bcr == 0)
return (0);
npf++;
break;
}
case SSE:
rp->hpof |= HPOF_SSEI;
mbp->mba_bcr = -(bp->b_bcount - (int)ptob(npf));
break;
#ifndef NOBADSECT
case BSE:
#ifdef HPBDEBUG
if (hpbdebug)
printf("hpecc, BSE: bn %d cn %d tn %d sn %d\n", bn, cn, tn, sn);
#endif
if ((bn = isbad(&hpbad[mi->mi_unit], cn, tn, sn)) < 0)
return(0);
bp->b_flags |= B_BAD;
bp->b_error = npf + 1;
bn = st->ncyl*st->nspc - st->nsect - 1 - bn;
cn = bn/st->nspc;
sn = bn%st->nspc;
tn = sn/st->nsect;
sn %= st->nsect;
mbp->mba_bcr = -512;
#ifdef HPBDEBUG
if (hpbdebug)
printf("revector to cn %d tn %d sn %d\n", cn, tn, sn);
#endif
break;
case CONT:
#ifdef HPBDEBUG
if (hpbdebug)
printf("hpecc, CONT: bn %d cn %d tn %d sn %d\n", bn,cn,tn,sn);
#endif
npf = bp->b_error;
bp->b_flags &= ~B_BAD;
mbp->mba_bcr = -(bp->b_bcount - (int)ptob(npf));
if ((mbp->mba_bcr & 0xffff) == 0)
return(0);
break;
#endif
}
rp->hpcs1 = HP_DCLR|HP_GO;
if (rp->hpof&HPOF_SSEI)
sn++;
rp->hpdc = cn;
rp->hpda = (tn<<8) + sn;
mbp->mba_sr = -1;
mbp->mba_var = (int)ptob(npf) + o;
rp->hpcs1 = bp->b_flags&B_READ ? HP_RCOM|HP_GO : HP_WCOM|HP_GO;
mi->mi_tab.b_errcnt = 0; /* error has been corrected */
return (1);
}
#define DBSIZE 20
hpdump(dev)
dev_t dev;
{
register struct mba_device *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_device *);
if (mi == 0 || mi->mi_alive == 0)
return (ENXIO);
mba = phys(mi->mi_hd, struct mba_hd *)->mh_physmba;
mba->mba_cr = MBCR_INIT;
hpaddr = (struct hpdevice *)&mba->mba_drv[mi->mi_drive];
if ((hpaddr->hpds & HPDS_VV) == 0) {
hpaddr->hpcs1 = HP_DCLR|HP_GO;
hpaddr->hpcs1 = HP_PRESET|HP_GO;
hpaddr->hpof = HPOF_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 & HPDS_DRY) == 0)
;
if (hpaddr->hpds&HPDS_ERR)
return (EIO);
start += blk*NBPG;
num -= blk;
}
return (0);
}
#endif
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.