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consolidate random data structures
[unix-history] / usr / src / sys / vax / mba / hp.c
diff --git a/usr/src/sys/vax/mba/hp.c b/usr/src/sys/vax/mba/hp.c
index 3585a6b..83c57d3 100644 (file)
--- a/usr/src/sys/vax/mba/hp.c
+++ b/usr/src/sys/vax/mba/hp.c
@@ -1,10 +1,24 @@
-/*     hp.c    4.1     %G%     */
+/*     hp.c    4.65    83/02/10        */
 
 
-#include "../conf/hp.h"
+#ifdef HPDEBUG
+int    hpdebug;
+#endif
+#ifdef HPBDEBUG
+int    hpbdebug;
+#endif
+
+#include "hp.h"
 #if NHP > 0
 /*
 #if NHP > 0
 /*
- * RP06/RM03/RM05 disk driver
+ * 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/param.h"
 #include "../h/systm.h"
@@ -14,521 +28,841 @@
 #include "../h/dir.h"
 #include "../h/user.h"
 #include "../h/map.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 "../vax/mtpr.h"
 #include "../h/vm.h"
 #include "../h/vm.h"
-
-struct device
-{
-       int     hpcs1;          /* control and Status register 1 */
-       int     hpds;           /* Drive Status */
-       int     hper1;          /* Error register 1 */
-       int     hpmr;           /* Maintenance */ 
-       int     hpas;           /* Attention Summary */
-       int     hpda;           /* Desired address register */
-       int     hpdt;           /* Drive type */
-       int     hpla;           /* Look ahead */
-       int     hpsn;           /* serial number */
-       int     hpof;           /* Offset register */
-       int     hpdc;           /* Desired Cylinder address register */
-       int     hpcc;           /* Current Cylinder */
-       int     hper2;          /* Error register 2 */
-       int     hper3;          /* Error register 3 */
-       int     hpec1;          /* Burst error bit position */
-       int     hpec2;          /* Burst error bit pattern */
-};
-
-#define        RP      022
-#define        RM      024
-#define        RM5     027
-#define        NSECT   22
-#define        NTRAC   19
-#define        NRMSECT 32
-#define        NRMTRAC 5
-
-#define        _hpSDIST        2
-#define        _hpRDIST        3
-
-int    hpSDIST = _hpSDIST;
-int    hpRDIST = _hpRDIST;
-int    hpseek;
-
-struct size
-{
+#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;
        daddr_t nblocks;
        int     cyloff;
-} hp_sizes[8] =
-{
+} 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,
        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 */
+       291280, 118,            /* G=cyl 118 thru 814 */
        0,      0,
        0,      0,
-}, rm_sizes[8] = {
+}, 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,
        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,
-       82080,  310,            /* G=cyl 310 thru 822 */
+       81984,  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 */
        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 */
+       500384, 0,              /* C=cyl 0 thru 822 */
        15884,  562,            /* D=cyl 562 thru 588 */
        55936,  589,            /* E=cyl 589 thru 680 */
        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 */
+       86240,  681,            /* F=cyl 681 thru 822 */
+       158592, 562,            /* G=cyl 562 thru 822 */
        291346, 82,             /* H=cyl 82 thru 561 */
        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] = {
+       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 */
+       0,        0,
+       0,        0,
+       0,        0,
+       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,
+       213664, 155,            /* H=cyl 155 thru 822 */
+}, 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 */
+}, hpfj_sizes[8] = {
+       15884,  0,              /* A=cyl 0 thru 18 */
+       33440,  19,             /* B=cyl 19 thru 58 */
+       724120, 0,              /* C=cyl 0 thru 841 */
+       0, 0,
+       0, 0,
+       0, 0,
+       381711, 398,            /* G=cyl 398 thru 841 */
+       291346, 59,             /* H=cyl 59 thru 397 */
+}, hpfj48_sizes[8] = {
+       15884,  0,              /* A=cyl 0 thru 16 */
+       33440,  17,             /* B=cyl 17 thru 52 */
+       808176, 0,              /* C=cyl 0 thru 841 */
+       0, 0,
+       0, 0,
+       0, 0,
+       465456, 357,            /* G=cyl 357 thru 841 */
+       291346, 53,             /* H=cyl 52 thru 356 */
 };
 };
+/* END OF STUFF WHICH SHOULD BE READ IN PER DISK */
 
 
-#define        P400    020
-#define        M400    0220
-#define        P800    040
-#define        M800    0240
-#define        P1200   060
-#define        M1200   0260
-int    hp_offset[16] =
-{
-       P400, M400, P400, M400,
-       P800, M800, P800, M800,
-       P1200, M1200, P1200, M1200,
-       0, 0, 0, 0,
+#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_EAGLE     11
+       -1,
+#define        HPDT_EAGLE48    12
+       -1,
+#define HPDT_RM02      13
+       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 };
+
+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 */
+       43,     20,     43*20,  842,    hpfj_sizes,     /* Fujitsu EAGLE */
+       48,     20,     48*20,  842,    hpfj48_sizes,   /* 48 sector EAGLE */
+};
+
+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     hptab;
-struct buf     rhpbuf;
-struct buf     hputab[NHP];
-char   hp_type[NHP];   /* drive type */
-
-#define        GO      01
-#define        PRESET  020
-#define        RTC     016
-#define        OFFSET  014
-#define        SEEK    04
-#define        SEARCH  030
-#define        RECAL   06
-#define        DCLR    010
-#define        WCOM    060
-#define        RCOM    070
-
-#define        IE      0100
-#define        PIP     020000
-#define        DRY     0200
-#define        ERR     040000
-#define        TRE     040000
-#define        DCK     0100000
-#define        WLE     04000
-#define        ECH     0100
-#define        VV      0100
-#define        DPR     0400
-#define        MOL     010000
-#define        FMT22   010000
+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        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
 #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 9400 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: si 9775 (direct)\n", mi->mi_unit);
+                       type = HPDT_9775;
+                       break;
+
+               case SI9730D:
+                       printf("hp%d: si 9730 (direct)\n", mi->mi_unit);
+                       type = HPDT_9730;
+                       break;
+
+               /*
+                * 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);
+                       type = HPDT_RM05;
+                       hpaddr->hpcs1 = HP_RECAL|HP_GO;
+                       DELAY(100000);
+                       break;
+
+               case SI9762:
+                       printf("hp%d: 9762\n", mi->mi_unit);
+                       type = HPDT_RM03;
+                       break;
+               }
+               return (type);
+       }
+
+       /*
+        * EMULEX SC750 or SC780.  Poke the holding register.
+        */
+       if (type == HPDT_RM02) {
+               int ntracks, nsectors;
+
+               hpaddr->hpcs1 = HP_NOP;
+               hpaddr->hphr = HPHR_MAXTRAK;
+               ntracks = (hpaddr->hphr & 0xffff) + 1;
+               if (ntracks == 16) {
+                       printf("hp%d: capricorn\n", mi->mi_unit);
+                       type = HPDT_CAPRICORN;
+                       goto done;
+               }
+               if (ntracks != 20) {
+                       printf("hp%d: ntracks %d: unknown device\n", ntracks);
+                       goto done;
+               }
+               hpaddr->hpcs1 = HP_NOP;
+               hpaddr->hphr = HPHR_MAXSECT;
+               nsectors = (hpaddr->hphr & 0xffff) + 1;
+               printf("hp%d: ", mi->mi_unit);
+               if (nsectors == 43)
+                       type = HPDT_EAGLE;
+               else {
+                       type = HPDT_EAGLE48;
+                       printf("modified ");
+               }
+               printf("eagle\n");
+done:
+               hpaddr->hpcs1 = HP_DCLR|HP_GO;
+               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)
 hpstrategy(bp)
-register struct buf *bp;
+       register struct buf *bp;
 {
 {
-       register struct buf *dp;
-       register unit, xunit, nspc;
+       register struct mba_device *mi;
+       register struct hpst *st;
+       register int unit;
        long sz, bn;
        long sz, bn;
-       struct size *sizes;
+       int xunit = minor(bp->b_dev) & 07;
+       int s;
 
 
-       if ((mbaact&(1<<HPMBANUM)) == 0)
-               mbainit(HPMBANUM);
-       xunit = minor(bp->b_dev) & 077;
        sz = bp->b_bcount;
        sz = (sz+511) >> 9;
        unit = dkunit(bp);
        sz = bp->b_bcount;
        sz = (sz+511) >> 9;
        unit = dkunit(bp);
-       if (hp_type[unit] == 0) {
-               struct device *hpaddr;
-               double mspw;
-
-               /* determine device type */
-               hpaddr = mbadev(HPMBA, unit);
-
-               /* record transfer rate (these are guesstimates secs/word) */
-               switch (hp_type[unit] = hpaddr->hpdt) {
-               case RM:        mspw = .0000019728; break;
-               case RM5:       mspw = .0000020345; break;
-               case RP:        mspw = .0000029592; break;
-               }
-               if (DK_N + unit <= DK_NMAX)
-                       dk_mspw[DK_N+unit] = mspw;
+       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;
        }
        }
-       switch (hp_type[unit]) {
+       s = spl5();
+       disksort(&mi->mi_tab, bp);
+       if (mi->mi_tab.b_active == 0)
+               mbustart(mi);
+       splx(s);
+       return;
 
 
-       case RM:
-               sizes = rm_sizes;
-               nspc = NRMSECT*NRMTRAC;
-               break;
-       case RM5:
-               sizes = rm5_sizes;
-               nspc = NRMSECT*NTRAC;
-               break;
-       case RP:
-               sizes = hp_sizes;
-               nspc = NSECT*NTRAC;
-               break;
-       default:
-               printf("hp: unknown device type 0%o\n", hp_type[unit]);
-               u.u_error = ENXIO;
-               unit = NHP+1;   /* force error */
-       }
-       if (unit >= NHP ||
-           bp->b_blkno < 0 ||
-           (bn = dkblock(bp))+sz > sizes[xunit&07].nblocks) {
-               bp->b_flags |= B_ERROR;
-               iodone(bp);
-               return;
-       }
-       bp->b_cylin = bn/nspc + sizes[xunit&07].cyloff;
-       dp = &hputab[unit];
-       (void) spl5();
-       disksort(dp, bp);
-       if (dp->b_active == 0) {
-               hpustart(unit);
-               if(hptab.b_active == 0)
-                       hpstart();
-       }
-       (void) spl0();
+bad:
+       bp->b_flags |= B_ERROR;
+       iodone(bp);
+       return;
 }
 
 }
 
-hpustart(unit)
-register unit;
+hpustart(mi)
+       register struct mba_device *mi;
 {
 {
-       register struct buf *bp, *dp;
-       register struct device *hpaddr;
+       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;
        daddr_t bn;
-       int sn, cn, csn;
-
-       ((struct mba_regs *)HPMBA)->mba_cr |= MBAIE;
-       hpaddr = mbadev(HPMBA, 0);
-       hpaddr->hpas = 1<<unit;
-
-       if(unit >= NHP)
-               return;
-       if (unit+DK_N <= DK_NMAX)
-               dk_busy &= ~(1<<(unit+DK_N));
-       dp = &hputab[unit];
-       if((bp=dp->b_actf) == NULL)
-               return;
-       hpaddr = mbadev(HPMBA, unit);
-       if((hpaddr->hpds & VV) == 0) {
-               hpaddr->hpcs1 = PRESET|GO;
-               hpaddr->hpof = FMT22;
+       int sn, dist;
+
+       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(dp->b_active)
-               goto done;
-       dp->b_active++;
-       if ((hpaddr->hpds & (DPR|MOL)) != (DPR|MOL))
-               goto done;
-
+       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);
        bn = dkblock(bp);
-       cn = bp->b_cylin;
-       switch (hp_type[unit]) {
-
-       case RM:
-               sn = bn%(NRMSECT*NRMTRAC);
-               sn = (sn+NRMSECT-hpSDIST)%NRMSECT;
-               break;
-       case RM5:
-               sn = bn%(NRMSECT*NTRAC);
-               sn = (sn+NRMSECT-hpSDIST)%NRMSECT;
-               break;
-       case RP:
-               sn = bn%(NSECT*NTRAC);
-               sn = (sn+NSECT-hpSDIST)%NSECT;
-               break;
-       default:
-               panic("hpustart");
-       }
-
-       if(cn - (hpaddr->hpdc & 0xffff))
-               goto search;
-       else if (hpseek)
-               goto done;
-       csn = ((hpaddr->hpla & 0xffff)>>6) - sn + 1;
-       if(csn < 0)
-               csn += NSECT;
-       if(csn > NSECT-hpRDIST)
-               goto done;
-
-search:
-       hpaddr->hpdc = cn;
-       if (hpseek)
-               hpaddr->hpcs1 = SEEK|GO;
+       sn = bn%st->nspc;
+       sn = (sn+st->nsect-hpSDIST)%st->nsect;
+       if (bp->b_cylin == (hpaddr->hpdc & 0xffff)) {
+               if (sc->sc_seek)
+                       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 (sc->sc_seek)
+               hpaddr->hpcs1 = HP_SEEK|HP_GO;
        else {
                hpaddr->hpda = sn;
        else {
                hpaddr->hpda = sn;
-               hpaddr->hpcs1 = SEARCH|GO;
+               hpaddr->hpcs1 = HP_SEARCH|HP_GO;
        }
        }
-       unit += DK_N;
-       if (unit <= DK_NMAX) {
-               dk_busy |= 1<<unit;
-               dk_seek[unit]++;
-       }
-       return;
-
-done:
-       dp->b_forw = NULL;
-       if(hptab.b_actf == NULL)
-               hptab.b_actf = dp;
-       else
-               hptab.b_actl->b_forw = dp;
-       hptab.b_actl = dp;
+       return (MBU_STARTED);
 }
 
 }
 
-hpstart()
+hpstart(mi)
+       register struct mba_device *mi;
 {
 {
-       register struct buf *bp, *dp;
-       register unit;
-       register struct device *hpaddr;
+       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;
        daddr_t bn;
-       int dn, sn, tn, cn, nspc, ns;
-
-loop:
-       if ((dp = hptab.b_actf) == NULL)
-               return;
-       if ((bp = dp->b_actf) == NULL) {
-               hptab.b_actf = dp->b_forw;
-               goto loop;
-       }
-       hptab.b_active++;
-       unit = minor(bp->b_dev) & 077;
-       dn = dkunit(bp);
+       int sn, tn;
+
        bn = dkblock(bp);
        bn = dkblock(bp);
-       switch (hp_type[dn]) {
-       case RM:
-               nspc = NRMSECT*NRMTRAC;
-               ns = NRMSECT;
-               cn = rm_sizes[unit&07].cyloff;
-               break;
-       case RM5:
-               nspc = NRMSECT*NTRAC;
-               ns = NRMSECT;
-               cn = rm5_sizes[unit&07].cyloff;
-               break;
-       case RP:
-               nspc = NSECT*NTRAC;
-               ns = NSECT;
-               cn = hp_sizes[unit&07].cyloff;
-               break;
-       default:
-               panic("hpstart");
-       }
-       cn += bn/nspc;
-       sn = bn%nspc;
-       tn = sn/ns;
-       sn = sn%ns;
-
-       hpaddr = mbadev(HPMBA, dn);
-       if ((hpaddr->hpds & (DPR|MOL)) != (DPR|MOL)) {
-               hptab.b_active = 0;
-               hptab.b_errcnt = 0;
-               dp->b_actf = bp->av_forw;
-               bp->b_flags |= B_ERROR;
-               iodone(bp);
-               goto loop;
-       }
-       if(hptab.b_errcnt >= 16 && (bp->b_flags&B_WRITE) == 0) {
-               hpaddr->hpof = hp_offset[hptab.b_errcnt & 017] | FMT22;
-               HPMBA->mba_cr &= ~MBAIE;
-               hpaddr->hpcs1 = OFFSET|GO;
-               while(hpaddr->hpds & PIP)
-                       ;
-               HPMBA->mba_cr |= MBAIE;
+       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;
        }
        }
-       hpaddr->hpdc = cn;
-       hpaddr->hpda = (tn << 8) + sn;
-       mbastart(bp, (int *)hpaddr);
-
-       unit = dn+DK_N;
-       if (unit <= DK_NMAX) {
-               dk_busy |= 1<<unit;
-               dk_xfer[unit]++;
-               dk_wds[unit] += bp->b_bcount>>6;
+       if (sc->sc_hdr) {
+               if (bp->b_flags & B_READ)
+                       return (HP_RHDR|HP_GO);
+               else
+                       return (HP_WHDR|HP_GO);
        }
        }
+       return (0);
 }
 
 }
 
-hpintr(mbastat, as)
+hpdtint(mi, mbsr)
+       register struct mba_device *mi;
+       int mbsr;
 {
 {
-       register struct buf *bp, *dp;
-       register unit;
-       register struct device *hpaddr;
-
-       if(hptab.b_active) {
-               dp = hptab.b_actf;
-               bp = dp->b_actf;
-               unit = dkunit(bp);
-               if (DK_N+unit <= DK_NMAX)
-                       dk_busy &= ~(1<<(DK_N+unit));
-               hpaddr = mbadev(HPMBA, unit);
-               if (hpaddr->hpds & ERR || mbastat & MBAEBITS) {
-                       while((hpaddr->hpds & DRY) == 0)
-                               ;
-                       if(++hptab.b_errcnt > 28 || hpaddr->hper1&WLE)
-                               bp->b_flags |= B_ERROR;
+       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];
+       register int er1, er2;
+       struct hpsoftc *sc = &hpsoftc[mi->mi_unit];
+       int retry = 0;
+
+       if (bp->b_flags&B_BAD) {
+               if (hpecc(mi, CONT))
+                       return(MBD_RESTARTED);
+       }
+       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 && !sc->sc_hdr) {
+                       if (hpecc(mi, BSE))
+                               return(MBD_RESTARTED);
+                       else
+                               goto hard;
+               } else if (++mi->mi_tab.b_errcnt > 27 ||
+                   mbsr & MBSR_HARD ||
+                   er1 & HPER1_HARD ||
+                   sc->sc_hdr ||
+                   (!ML11 && (er2 & HPER2_HARD))) {
+hard:
+                       if (ML11)
+                               bp->b_blkno = hpaddr->hpda&0xffff;
                        else
                        else
-                               hptab.b_active = 0;
-                       if(hptab.b_errcnt > 27)
-                               deverror(bp, mbastat, hpaddr->hper1);
-                       if ((hpaddr->hper1&0xffff) == DCK) {
-                               if (hpecc(hpaddr, bp))
-                                       return;
-                       }
-                       hpaddr->hpcs1 = DCLR|GO;
-                       if((hptab.b_errcnt&07) == 4) {
-                               HPMBA->mba_cr &= ~MBAIE;
-                               hpaddr->hpcs1 = RECAL|GO;
-                               while(hpaddr->hpds & PIP)
-                                       ;
-                               HPMBA->mba_cr |= MBAIE;
-                       }
+                               bp->b_blkno = (hpaddr->hpdc*st->nspc)&0xffff +
+                                         ((hpaddr->hpda>>8)&0xffff)*st->nsect +
+                                               (hpaddr->hpda&0x1f);
+                       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;
+                       retry = 0;
+                       sc->sc_recal = 0;
+               } else if ((er2 & HPER2_BSE) && !ML11) {
+                       if (hpecc(mi, BSE))
+                               return(MBD_RESTARTED);
+                       else
+                               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(hptab.b_active) {
-                       if(hptab.b_errcnt) {
-                               HPMBA->mba_cr &= ~MBAIE;
-                               hpaddr->hpcs1 = RTC|GO;
-                               while(hpaddr->hpds & PIP)
-                                       ;
-                               HPMBA->mba_cr |= MBAIE;
-                       }
-                       hptab.b_active = 0;
-                       hptab.b_errcnt = 0;
-                       hptab.b_actf = dp->b_forw;
-                       dp->b_active = 0;
-                       dp->b_errcnt = 0;
-                       dp->b_actf = bp->av_forw;
-                       bp->b_resid = -HPMBA->mba_bcr & 0xffff;
-                       iodone(bp);
-                       if(dp->b_actf)
-                               hpustart(unit);
+               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);
                }
                }
-               as &= ~(1<<unit);
-       } else {
-               if(as == 0)
-                       HPMBA->mba_cr |= MBAIE;
+#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 = -(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);
        }
        }
-       for(unit=0; unit<NHP; unit++)
-               if(as & (1<<unit))
-                       hpustart(unit);
-       hpstart();
+       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));
 }
 
 }
 
-hpread(dev)
+hpwrite(dev, uio)
+       dev_t dev;
+       struct uio *uio;
 {
 {
+       register int unit = minor(dev) >> 3;
 
 
-       physio(hpstrategy, &rhpbuf, dev, B_READ, minphys);
+       if (unit >= NHP)
+               return (ENXIO);
+       return (physio(hpstrategy, &rhpbuf[unit], dev, B_WRITE, minphys, uio));
 }
 
 }
 
-hpwrite(dev)
+/*ARGSUSED*/
+hpioctl(dev, cmd, data, flag)
+       dev_t dev;
+       int cmd;
+       caddr_t data;
+       int flag;
 {
 
 {
 
-       physio(hpstrategy, &rhpbuf, dev, B_WRITE, minphys);
+       switch (cmd) {
+
+       case DKIOCHDR:  /* do header read/write */
+               hpsoftc[minor(dev) >> 3].sc_hdr = 1;
+               return (0);
+
+       default:
+               return (ENXIO);
+       }
 }
 
 }
 
-hpecc(rp, bp)
-register struct device *rp;
-register struct buf *bp;
+hpecc(mi, flag)
+       register struct mba_device *mi;
+       int flag;
 {
 {
-       struct mba_regs *mbp = HPMBA;
-       register int i;
-       caddr_t addr;
-       int reg, bit, byte, npf, mask, o;
-       int dn, bn, cn, tn, sn, ns, nt;
-       extern char buffers[NBUF][BSIZE];
-       struct pte mpte;
+       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;
 
        int bcr;
 
-       /*
-        * Npf is the number of sectors transferred before the sector
-        * containing the ECC error, and reg is the MBA register
-        * mapping (the first part of)the transfer.
-        * O is offset within a memory page of the first byte transferred.
-        */
        bcr = mbp->mba_bcr & 0xffff;
        if (bcr)
                bcr |= 0xffff0000;              /* sxt */
        bcr = mbp->mba_bcr & 0xffff;
        if (bcr)
                bcr |= 0xffff0000;              /* sxt */
-       npf = btop(bcr + bp->b_bcount) - 1;
-       reg = npf;
+       if (flag == CONT)
+               npf = bp->b_error;
+       else
+               npf = btop(bcr + bp->b_bcount);
        o = (int)bp->b_un.b_addr & PGOFSET;
        o = (int)bp->b_un.b_addr & PGOFSET;
-       printf("%D ", bp->b_blkno + npf);
-       prdev("ECC", bp->b_dev);
-       mask = rp->hpec2&0xffff;
-       if (mask == 0) {
-               rp->hpof = FMT22;
-               return (0);
-       }
-
-       /*
-        * Compute the byte and bit position of the error.
-        * The variable i is the byte offset in the transfer,
-        * the variable byte is the offset from a page boundary
-        * in main memory.
-        */
-       i = (rp->hpec1&0xffff) - 1;             /* -1 makes 0 origin */
-       bit = i&07;
-       i = (i&~07)>>3;
-       byte = i + o;
-       /*
-        * Correct while possible bits remain of mask.  Since mask
-        * contains 11 bits, we continue while the bit offset is > -11.
-        * Also watch out for end of this block and the end of the whole
-        * transfer.
-        */
-       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;
-       }
-       hptab.b_active++;               /* Either complete or continuing */
-       if (bcr == 0)
-               return (0);
-       /*
-        * Have to continue the transfer... clear the drive,
-        * and compute the position where the transfer is to continue.
-        * We have completed npf+1 sectores of the transfer already;
-        * restart at offset o of next sector (i.e. in MBA register reg+1).
-        */
-       rp->hpcs1 = DCLR|GO;
-       dn = dkunit(bp);
        bn = dkblock(bp);
        bn = dkblock(bp);
-       switch (hp_type[dn]) {
-
-       case RM:
-               ns = NRMSECT; nt = NRMTRAC; break;
-       case RM5:
-               ns = NRMSECT; nt = NTRAC; break;
-       case RP:
-               ns = NSECT; nt = NTRAC; break;
-       default:
-               panic("hpecc");
-       }
        cn = bp->b_cylin;
        cn = bp->b_cylin;
-       sn = bn%(ns*nt) + npf + 1;
-       tn = sn/ns;
-       sn %= ns;
-       cn += tn/nt;
-       tn %= nt;
+       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;
+
+       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;
+       }
+       rp->hpcs1 = HP_DCLR|HP_GO;
+       if (rp->hpof&HPOF_SSEI)
+               sn++;
        rp->hpdc = cn;
        rp->hpda = (tn<<8) + sn;
        mbp->mba_sr = -1;
        rp->hpdc = cn;
        rp->hpda = (tn<<8) + sn;
        mbp->mba_sr = -1;
-       mbp->mba_var = (int)ptob(reg+1) + o;
-       rp->hpcs1 = RCOM|GO;
+       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);
 }
        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
 #endif
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.