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[unix-history] / usr / src / sys / vax / mba / hp.c
/* hp.c 6.1 83/07/29 */
#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 "../machine/pte.h"
#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 "../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;
} rp06_sizes[8] = {
15884, 0, /* A=cyl 0 thru 37 */
33440, 38, /* B=cyl 38 thru 117 */
340670, 0, /* C=cyl 0 thru 814 */
15884, 118, /* D=cyl 118 thru 155 */
55936, 156, /* E=cyl 156 thru 289 */
219384, 290, /* F=cyl 290 thru 814 */
291280, 118, /* G=cyl 118 thru 814 */
0, 0,
}, rp05_sizes[8] = {
15884, 0, /* A=cyl 0 thru 37 */
33440, 38, /* B=cyl 38 thru 117 */
171798, 0, /* C=cyl 0 thru 410 */
15884, 118, /* D=cyl 118 thru 155 */
55936, 156, /* E=cyl 156 thru 289 */
50512, 290, /* F=cyl 290 thru 410 */
122408, 118, /* G=cyl 118 thru 410 */
0, 0,
}, rm03_sizes[8] = {
15884, 0, /* A=cyl 0 thru 99 */
33440, 100, /* B=cyl 100 thru 308 */
131680, 0, /* C=cyl 0 thru 822 */
15884, 309, /* D=cyl 309 thru 408 */
55936, 409, /* E=cyl 409 thru 758 */
10144, 759, /* F=cyl 759 thru 822 */
82144, 309, /* G=cyl 309 thru 822 */
0, 0,
}, rm05_sizes[8] = {
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 */
86240, 681, /* F=cyl 681 thru 822 */
158592, 562, /* G=cyl 562 thru 822 */
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 */
15884, 115, /* D=cyl 115 thru 151 */
55936, 152, /* E=cyl 152 thru 280 */
120559, 281, /* F=cyl 281 thru 558 */
192603, 115, /* G=cyl 115 thru 558 */
0, 0,
}, rp07_sizes[8] = {
15884, 0, /* A=cyl 0 thru 9 */
66880, 10, /* B=cyl 10 thru 51 */
1008000, 0, /* C=cyl 0 thru 629 */
15884, 235, /* D=cyl 235 thru 244 */
307200, 245, /* E=cyl 245 thru 436 */
308650, 437, /* F=cyl 437 thru 629 */
631850, 235, /* G=cyl 235 thru 629 */
291346, 52, /* H=cyl 52 thru 234 */
}, cdc9775_sizes[8] = {
15884, 0, /* A=cyl 0 thru 12 */
66880, 13, /* B=cyl 13 thru 65 */
1079040, 0, /* C=cyl 0 thru 842 */
15884, 294, /* D=cyl 294 thru 306 */
307200, 307, /* E=cyl 307 thru 546 */
378784, 547, /* F=cyl 547 thru 842 */
702624, 294, /* G=cyl 294 thru 842 */
291346, 66, /* H=cyl 66 thru 293 */
}, cdc9730_sizes[8] = {
15884, 0, /* A=cyl 0 thru 49 */
33440, 50, /* B=cyl 50 thru 154 */
263360, 0, /* C=cyl 0 thru 822 */
15884, 155, /* D=cyl 155 thru 204 */
55936, 205, /* E=cyl 205 thru 379 */
141664, 380, /* F=cyl 380 thru 822 */
213664, 155, /* G=cyl 155 thru 822 */
0, 0,
}, capricorn_sizes[8] = {
15884, 0, /* A=cyl 0 thru 31 */
33440, 32, /* B=cyl 32 thru 97 */
524288, 0, /* C=cyl 0 thru 1023 */
15884, 668, /* D=cyl 668 thru 699 */
55936, 700, /* E=cyl 700 thru 809 */
109472, 810, /* F=cyl 810 thru 1023 */
182176, 668, /* G=cyl 668 thru 1023 */
291346, 98, /* H=cyl 98 thru 667 */
}, eagle_sizes[8] = {
15884, 0, /* A=cyl 0 thru 16 */
66880, 17, /* B=cyl 17 thru 86 */
808320, 0, /* C=cyl 0 thru 841 */
15884, 391, /* D=cyl 391 thru 407 */
307200, 408, /* E=cyl 408 thru 727 */
109296, 728, /* F=cyl 728 thru 841 */
432816, 391, /* G=cyl 391 thru 841 */
291346, 87, /* H=cyl 87 thru 390 */
}, ampex_sizes[8] = {
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 */
81312, 681, /* F=cyl 681 thru 814 */
153664, 562, /* G=cyl 562 thru 814 */
291346, 82, /* H=cyl 82 thru 561 */
};
/* END OF STUFF WHICH SHOULD BE READ IN PER DISK */
/*
* 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_RP04 4
MBDT_RP04,
#define HPDT_RP05 5
MBDT_RP05,
#define HPDT_RP07 6
MBDT_RP07,
#define HPDT_ML11A 7
MBDT_ML11A,
#define HPDT_ML11B 8
MBDT_ML11B,
#define HPDT_9775 9
-1,
#define HPDT_9730 10
-1,
#define HPDT_CAPRICORN 11
-1,
#define HPDT_EAGLE 12
-1,
#define HPDT_9300 13
-1,
#define HPDT_RM02 14
MBDT_RM02, /* beware, actually capricorn or eagle */
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 };
/*
* Beware, sdist and rdist are not well tuned
* for many of the drives listed in this table.
* Try patching things with something i/o intensive
* running and watch iostat.
*/
struct hpst {
short nsect; /* # sectors/track */
short ntrak; /* # tracks/cylinder */
short nspc; /* # sector/cylinders */
short ncyl; /* # cylinders */
struct size *sizes; /* partition tables */
short sdist; /* seek distance metric */
short rdist; /* rotational distance metric */
} hpst[] = {
{ 32, 5, 32*5, 823, rm03_sizes, 3, 4 }, /* RM03 */
{ 32, 19, 32*19, 823, rm05_sizes, 3, 4 }, /* RM05 */
{ 22, 19, 22*19, 815, rp06_sizes, 3, 4 }, /* RP06 */
{ 31, 14, 31*14, 559, rm80_sizes, 3, 4 }, /* RM80 */
{ 22, 19, 22*19, 411, rp05_sizes, 3, 4 }, /* RP04 */
{ 22, 19, 22*19, 411, rp05_sizes, 3, 4 }, /* RP05 */
{ 50, 32, 50*32, 630, rp07_sizes, 7, 8 }, /* RP07 */
{ 1, 1, 1, 1, 0, 0, 0 }, /* ML11A */
{ 1, 1, 1, 1, 0, 0, 0 }, /* ML11B */
{ 32, 40, 32*40, 843, cdc9775_sizes, 3, 4 }, /* 9775 */
{ 32, 10, 32*10, 823, cdc9730_sizes, 3, 4 }, /* 9730 */
{ 32, 16, 32*16, 1024, capricorn_sizes,7, 8 }, /* Capricorn */
{ 48, 20, 48*20, 842, eagle_sizes, 7, 8 }, /* EAGLE */
{ 32, 19, 32*19, 815, ampex_sizes, 3, 4 }, /* 9300 */
};
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];
struct buf bhpbuf[NHP];
struct dkbad hpbad[NHP];
struct hpsoftc {
u_char sc_hpinit; /* drive initialized */
u_char sc_recal; /* recalibrate state */
u_char sc_hdr; /* next i/o includes header */
u_char sc_doseeks; /* perform explicit seeks */
daddr_t sc_mlsize; /* ML11 size */
} hpsoftc[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)
#define MASKREG(reg) ((reg)&0xffff)
#ifdef INTRLVE
daddr_t dkblock();
#endif
/*ARGSUSED*/
hpattach(mi, slave)
register struct mba_device *mi;
{
mi->mi_type = hpmaptype(mi);
if (!ML11 && mi->mi_dk >= 0) {
struct hpst *st = &hpst[mi->mi_type];
dk_mspw[mi->mi_dk] = 1.0 / 60 / (st->nsect * 256);
}
}
/*
* Map apparent MASSBUS drive type into manufacturer
* specific configuration. For SI controllers this is done
* based on codes in the serial number register. For
* EMULEX controllers, the track and sector attributes are
* used when the drive type is an RM02 (not supported by DEC).
*/
hpmaptype(mi)
register struct mba_device *mi;
{
register struct hpdevice *hpaddr = (struct hpdevice *)mi->mi_drv;
register int type = mi->mi_type;
/*
* Model-byte processing for SI controllers.
* NB: Only deals with RM03 and RM05 emulations.
*/
if (type == HPDT_RM03 || type == HPDT_RM05) {
int hpsn = hpaddr->hpsn;
if ((hpsn & SIMB_LU) != mi->mi_drive)
return (type);
switch ((hpsn & SIMB_MB) & ~(SIMB_S6|SIRM03|SIRM05)) {
case SI9775D:
printf("hp%d: 9775 (direct)\n", mi->mi_unit);
type = HPDT_9775;
break;
case SI9730D:
printf("hp%d: 9730 (direct)\n", mi->mi_unit);
type = HPDT_9730;
break;
/*
* Beware, since the only SI controller we
* have has a 9300 instead of a 9766, we map the
* drive type into the 9300. This means that
* on a 9766 you lose the last 8 cylinders (argh).
*/
case SI9766:
printf("hp%d: 9300\n", mi->mi_unit);
type = HPDT_9300;
break;
case SI9762:
printf("hp%d: 9762\n", mi->mi_unit);
type = HPDT_RM03;
break;
case SICAPD:
printf("hp%d: capricorn\n", mi->mi_unit);
type = HPDT_CAPRICORN;
break;
case SI9751D:
printf("hp%d: eagle\n", mi->mi_unit);
type = HPDT_EAGLE;
break;
}
return (type);
}
/*
* EMULEX SC750 or SC780. Poke the holding register.
*/
if (type == HPDT_RM02) {
int ntracks, nsectors;
hpaddr->hpof = HPOF_FMT22;
mbclrattn(mi);
hpaddr->hpcs1 = HP_NOP;
hpaddr->hphr = HPHR_MAXTRAK;
ntracks = MASKREG(hpaddr->hphr) + 1;
if (ntracks == 16) {
printf("hp%d: capricorn\n", mi->mi_unit);
type = HPDT_CAPRICORN;
goto done;
}
if (ntracks == 19) {
printf("hp%d: 9300\n", mi->mi_unit);
type = HPDT_9300;
goto done;
}
hpaddr->hpcs1 = HP_NOP;
hpaddr->hphr = HPHR_MAXSECT;
nsectors = MASKREG(hpaddr->hphr) + 1;
if (ntracks == 20 && nsectors == 48) {
type = HPDT_EAGLE;
printf("hp%d: eagle\n", mi->mi_unit);
goto done;
}
printf("hp%d: ntracks %d, nsectors %d: unknown device\n",
mi->mi_unit, ntracks, nsectors);
done:
hpaddr->hpcs1 = HP_DCLR|HP_GO;
mbclrattn(mi); /* conservative */
return (type);
}
/*
* Map all ML11's to the same type. Also calculate
* transfer rates based on device characteristics.
*/
if (type == HPDT_ML11A || type == HPDT_ML11B) {
register struct hpsoftc *sc = &hpsoftc[mi->mi_unit];
register int trt;
sc->sc_mlsize = hpaddr->hpmr & HPMR_SZ;
if ((hpaddr->hpmr & HPMR_ARRTYP) == 0)
sc->sc_mlsize >>= 2;
if (mi->mi_dk >= 0) {
trt = (hpaddr->hpmr & HPMR_TRT) >> 8;
dk_mspw[mi->mi_dk] = 1.0 / (1<<(20-trt));
}
type = HPDT_ML11A;
}
return (type);
}
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) {
struct hpsoftc *sc = &hpsoftc[unit];
if (bp->b_blkno < 0 ||
dkblock(bp)+sz > sc->sc_mlsize)
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;
struct hpsoftc *sc = &hpsoftc[mi->mi_unit];
daddr_t bn;
int sn, dist;
st = &hpst[mi->mi_type];
hpaddr->hpcs1 = 0;
if ((hpaddr->hpcs1&HP_DVA) == 0)
return (MBU_BUSY);
if ((hpaddr->hpds & HPDS_VV) == 0 || !sc->sc_hpinit) {
struct buf *bbp = &bhpbuf[mi->mi_unit];
sc->sc_hpinit = 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);
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;
}
}
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 - st->sdist) % st->nsect;
if (bp->b_cylin == MASKREG(hpaddr->hpdc)) {
if (sc->sc_doseeks)
return (MBU_DODATA);
dist = (MASKREG(hpaddr->hpla) >> 6) - st->nsect + 1;
if (dist < 0)
dist += st->nsect;
if (dist > st->nsect - st->rdist)
return (MBU_DODATA);
} else
hpaddr->hpdc = bp->b_cylin;
if (sc->sc_doseeks)
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];
struct hpsoftc *sc = &hpsoftc[mi->mi_unit];
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 (sc->sc_hdr) {
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 struct hpst *st;
register int er1, er2;
struct hpsoftc *sc = &hpsoftc[mi->mi_unit];
int retry = 0;
st = &hpst[mi->mi_type];
if (bp->b_flags&B_BAD && hpecc(mi, CONT))
return (MBD_RESTARTED);
if (hpaddr->hpds&HPDS_ERR || mbsr&MBSR_EBITS) {
er1 = hpaddr->hper1;
er2 = hpaddr->hper2;
#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",MASKREG(dc), MASKREG(da));
printf("errcnt %d ", mi->mi_tab.b_errcnt);
printf("mbsr=%b ", mbsr, mbsr_bits);
printf("er1=%b er2=%b\n", MASKREG(er1), HPER1_BITS,
MASKREG(er2), HPER2_BITS);
DELAY(1000000);
}
#endif
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 (MASKREG(er1) == HPER1_FER && RP06 && !sc->sc_hdr) {
if (hpecc(mi, BSE))
return (MBD_RESTARTED);
goto hard;
} else if (++mi->mi_tab.b_errcnt > 27 ||
mbsr & MBSR_HARD ||
er1 & HPER1_HARD ||
sc->sc_hdr ||
(!ML11 && (er2 & HPER2_HARD))) {
/*
* HCRC means the header is screwed up and the sector
* might well exist in the bad sector table,
* better check....
*/
if ((er1&HPER1_HCRC) &&
!ML11 && !sc->sc_hdr && hpecc(mi, BSE))
return (MBD_RESTARTED);
hard:
if (ML11)
bp->b_blkno = MASKREG(hpaddr->hpda);
else
bp->b_blkno = MASKREG(hpaddr->hpdc) * st->nspc +
(MASKREG(hpaddr->hpda) >> 8) * st->nsect +
(hpaddr->hpda&0xff);
/*
* If we have a data check error or a hard
* ecc error the bad sector has been read/written,
* and the controller registers are pointing to
* the next sector...
*/
if (er1&(HPER1_DCK|HPER1_ECH) || sc->sc_hdr)
bp->b_blkno--;
harderr(bp, "hp");
if (mbsr & (MBSR_EBITS &~ (MBSR_DTABT|MBSR_MBEXC)))
printf("mbsr=%b ", mbsr, mbsr_bits);
printf("er1=%b er2=%b",
MASKREG(hpaddr->hper1), HPER1_BITS,
MASKREG(hpaddr->hper2), HPER2_BITS);
if (hpaddr->hpmr)
printf(" mr=%o", MASKREG(hpaddr->hpmr));
if (hpaddr->hpmr2)
printf(" mr2=%o", MASKREG(hpaddr->hpmr2));
if (sc->sc_hdr)
printf(" (hdr i/o)");
printf("\n");
bp->b_flags |= B_ERROR;
retry = 0;
sc->sc_recal = 0;
} else if ((er2 & HPER2_BSE) && !ML11) {
if (hpecc(mi, BSE))
return (MBD_RESTARTED);
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;
sc->sc_recal = 1;
return (MBD_RESTARTED);
}
if (retry)
return (MBD_RETRY);
}
#ifdef HPDEBUG
else
if (hpdebug && sc->sc_recal) {
printf("recal %d ", sc->sc_recal);
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 (sc->sc_recal) {
case 1:
hpaddr->hpdc = bp->b_cylin;
hpaddr->hpcs1 = HP_SEEK|HP_GO;
sc->sc_recal++;
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;
sc->sc_recal++;
return (MBD_RESTARTED);
donerecal:
case 3:
sc->sc_recal = 0;
return (MBD_RETRY);
}
sc->sc_hdr = 0;
bp->b_resid = MASKREG(-mi->mi_mba->mba_bcr);
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 */
hpsoftc[minor(dev) >> 3].sc_hdr = 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 = MASKREG(mbp->mba_bcr);
if (bcr)
bcr |= 0xffff0000; /* sxt */
if (flag == CONT)
npf = bp->b_error;
else
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 = MASKREG(rp->hpec2);
i = MASKREG(rp->hpec1) - 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;
case BSE:
#ifdef HPBDEBUG
if (hpbdebug)
printf("hpecc, BSE: bn %d cn %d tn %d sn %d\n", bn, cn, tn, sn);
#endif
if (rp->hpof&HPOF_SSEI)
sn++;
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;
rp->hpof &= ~HPOF_SSEI;
#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 (MASKREG(mbp->mba_bcr) == 0)
return (0);
break;
}
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);
}
hpsize(dev)
dev_t dev;
{
int unit = minor(dev) >> 3;
struct mba_device *mi;
struct hpst *st;
if (unit >= NHP || (mi = hpinfo[unit]) == 0 || mi->mi_alive == 0)
return (-1);
st = &hpst[mi->mi_type];
return ((int)st->sizes[minor(dev) & 07].nblocks);
}
#endif
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.