/* hp.c 4.41 81/07/09 */ #ifdef HPDEBUG int hpdebug; #endif #ifdef HPBDEBUG int hpbdebug; #endif #include "hp.h" #if NHP > 0 /* * HP disk driver for RP0x+RMxx * * 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 "../h/mbareg.h" #include "../h/mbavar.h" #include "../h/mtpr.h" #include "../h/vm.h" #include "../h/cmap.h" #include "../h/dkbad.h" #include "../h/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] = { 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 86636, 681, 158688, 562, #endif 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 */ 110143, 305, /* H=cyl 305 thru 558 */ }, hp7_sizes[8] = { 15844, 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 */ }; /* 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, MBDT_RP05, MBDT_RP07, 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 */ }; 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 char hpinit[NHP]; char hprecal[NHP]; #define b_cylin b_resid #ifdef INTRLVE daddr_t dkblock(); #endif int hpseek; /*ARGSUSED*/ hpattach(mi, slave) struct mba_device *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_device *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_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; hpaddr->hpof = HPOF_FMT22; mbclrattn(mi); #ifndef NOBADSECT 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 ((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); sn = bn%st->nspc; tn = sn/st->nsect; sn %= st->nsect; hpaddr->hpdc = bp->b_cylin; hpaddr->hpda = (tn << 8) + sn; 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; 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 if (hpaddr->hper1&HPER1_WLE) { printf("hp%d: write locked\n", dkunit(bp)); bp->b_flags |= B_ERROR; } else if (++mi->mi_tab.b_errcnt > 27 || mbsr & MBSR_HARD || hpaddr->hper1 & HPER1_HARD || hpaddr->hper2 & 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 (hpaddr->hper2 & HPER2_BSE) { #ifndef NOBADSECT if (hpecc(mi, BSE)) return(MBD_RESTARTED); else #endif goto hard; } else if (hptypes[mi->mi_type] == MBDT_RM80 && hpaddr->hper2&HPER2_SSE) { (void) hpecc(mi, SSE); return (MBD_RESTARTED); } else if ((hpaddr->hper1&(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 ((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); } 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); } hpaddr->hpof = HPOF_FMT22; 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, 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