date and time created 82/06/14 18:09:52 by peter

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

diff --git a/usr/src/sys/vax/uba/uba.c b/usr/src/sys/vax/uba/uba.c
index 6f7e849..a4e419d 100644 (file)
--- a/usr/src/sys/vax/uba/uba.c
+++ b/usr/src/sys/vax/uba/uba.c
@@ -1,4 +1,4 @@
-/*     uba.c   4.26    81/03/22        */
+/*     uba.c   4.45    82/05/26        */

 
 #include "../h/param.h"
 #include "../h/systm.h"
 
 #include "../h/param.h"
 #include "../h/systm.h"


@@ -56,14 +56,12 @@ ubago(ui)
        if (ui->ui_dk >= 0) {
                unit = ui->ui_dk;
                dk_busy |= 1<<unit;
        if (ui->ui_dk >= 0) {
                unit = ui->ui_dk;
                dk_busy |= 1<<unit;

+               dk_xfer[unit]++;
+               dk_wds[unit] += um->um_tab.b_actf->b_actf->b_bcount>>6;

        }
        if (uh->uh_actf == ui)
                uh->uh_actf = ui->ui_forw;
        (*um->um_driver->ud_dgo)(um);
        }
        if (uh->uh_actf == ui)
                uh->uh_actf = ui->ui_forw;
        (*um->um_driver->ud_dgo)(um);

-       if (ui->ui_dk >= 0) {
-               dk_xfer[unit]++;
-               dk_wds[unit] += um->um_tab.b_actf->b_bcount>>6;
-       }

        return (1);
 rwait:
        if (uh->uh_actf != ui) {
        return (1);
 rwait:
        if (uh->uh_actf != ui) {


@@ -120,8 +118,10 @@ ubasetup(uban, bp, flags)
        npf = btoc(bp->b_bcount + o) + 1;
        a = spl6();
        while ((reg = rmalloc(uh->uh_map, npf)) == 0) {
        npf = btoc(bp->b_bcount + o) + 1;
        a = spl6();
        while ((reg = rmalloc(uh->uh_map, npf)) == 0) {

-               if (flags & UBA_CANTWAIT)
+               if (flags & UBA_CANTWAIT) {
+                       splx(a);

                        return (0);
                        return (0);

+               }

                uh->uh_mrwant++;
                sleep((caddr_t)uh->uh_map, PSWP);
        }
                uh->uh_mrwant++;
                sleep((caddr_t)uh->uh_map, PSWP);
        }


@@ -130,41 +130,35 @@ ubasetup(uban, bp, flags)
                while ((bdp = ffs(uh->uh_bdpfree)) == 0) {
                        if (flags & UBA_CANTWAIT) {
                                rmfree(uh->uh_map, npf, reg);
                while ((bdp = ffs(uh->uh_bdpfree)) == 0) {
                        if (flags & UBA_CANTWAIT) {
                                rmfree(uh->uh_map, npf, reg);

+                               splx(a);

                                return (0);
                        }
                        uh->uh_bdpwant++;
                        sleep((caddr_t)uh->uh_map, PSWP);
                }
                uh->uh_bdpfree &= ~(1 << (bdp-1));
                                return (0);
                        }
                        uh->uh_bdpwant++;
                        sleep((caddr_t)uh->uh_map, PSWP);
                }
                uh->uh_bdpfree &= ~(1 << (bdp-1));

-       }
+       } else if (flags & UBA_HAVEBDP)
+               bdp = (flags >> 28) & 0xf;

        splx(a);
        reg--;
        ubinfo = (bdp << 28) | (npf << 18) | (reg << 9) | o;
        splx(a);
        reg--;
        ubinfo = (bdp << 28) | (npf << 18) | (reg << 9) | o;

-       io = &uh->uh_uba->uba_map[reg];

        temp = (bdp << 21) | UBAMR_MRV;
        temp = (bdp << 21) | UBAMR_MRV;

-       rp = bp->b_flags&B_DIRTY ? &proc[2] : bp->b_proc;

        if (bdp && (o & 01))
                temp |= UBAMR_BO;
        if (bdp && (o & 01))
                temp |= UBAMR_BO;

-       if (bp->b_flags & B_UAREA) {
-               for (i = UPAGES - bp->b_bcount / NBPG; i < UPAGES; i++) {
-                       if (rp->p_addr[i].pg_pfnum == 0)
-                               panic("uba: zero upage");
-                       *(int *)io++ = rp->p_addr[i].pg_pfnum | temp;
-               }
-       } else if ((bp->b_flags & B_PHYS) == 0) {
+       rp = bp->b_flags&B_DIRTY ? &proc[2] : bp->b_proc;
+       if ((bp->b_flags & B_PHYS) == 0)

                pte = &Sysmap[btop(((int)bp->b_un.b_addr)&0x7fffffff)];
                pte = &Sysmap[btop(((int)bp->b_un.b_addr)&0x7fffffff)];

-               while (--npf != 0)
-                       *(int *)io++ = pte++->pg_pfnum | temp;
-       } else {
-               if (bp->b_flags & B_PAGET)
-                       pte = &Usrptmap[btokmx((struct pte *)bp->b_un.b_addr)];
-               else
-                       pte = vtopte(rp, v);
-               while (--npf != 0) {
-                       if (pte->pg_pfnum == 0)
-                               panic("uba zero uentry");
-                       *(int *)io++ = pte++->pg_pfnum | temp;
-               }
+       else if (bp->b_flags & B_UAREA)
+               pte = &rp->p_addr[v];
+       else if (bp->b_flags & B_PAGET)
+               pte = &Usrptmap[btokmx((struct pte *)bp->b_un.b_addr)];
+       else
+               pte = vtopte(rp, v);
+       io = &uh->uh_uba->uba_map[reg];
+       while (--npf != 0) {
+               if (pte->pg_pfnum == 0)
+                       panic("uba zero uentry");
+               *(int *)io++ = pte++->pg_pfnum | temp;

        }
        *(int *)io++ = 0;
        return (ubinfo);
        }
        *(int *)io++ = 0;
        return (ubinfo);


@@ -280,6 +274,29 @@ ubapurge(um)
        }
 }
 
        }
 }
 

+ubainitmaps(uhp)
+       register struct uba_hd *uhp;
+{
+
+       rminit(uhp->uh_map, NUBMREG, 1, "uba", UAMSIZ);
+       switch (cpu) {
+#if VAX780
+       case VAX_780:
+               uhp->uh_bdpfree = (1<<NBDP780) - 1;
+               break;
+#endif
+#if VAX750
+       case VAX_750:
+               uhp->uh_bdpfree = (1<<NBDP750) - 1;
+               break;
+#endif
+#if VAX730
+       case VAX_730:
+               break;
+#endif
+       }
+}
+

 /*
  * Generate a reset on uba number uban.  Then
  * call each device in the character device table,
 /*
  * Generate a reset on uba number uban.  Then
  * call each device in the character device table,


@@ -300,12 +317,16 @@ ubareset(uban)
        uh->uh_actf = uh->uh_actl = 0;
        uh->uh_bdpwant = 0;
        uh->uh_mrwant = 0;
        uh->uh_actf = uh->uh_actl = 0;
        uh->uh_bdpwant = 0;
        uh->uh_mrwant = 0;

+       ubainitmaps(uh);

        wakeup((caddr_t)&uh->uh_bdpwant);
        wakeup((caddr_t)&uh->uh_mrwant);
        printf("uba%d: reset", uban);
        ubainit(uh->uh_uba);
        for (cdp = cdevsw; cdp->d_open; cdp++)
                (*cdp->d_reset)(uban);
        wakeup((caddr_t)&uh->uh_bdpwant);
        wakeup((caddr_t)&uh->uh_mrwant);
        printf("uba%d: reset", uban);
        ubainit(uh->uh_uba);
        for (cdp = cdevsw; cdp->d_open; cdp++)
                (*cdp->d_reset)(uban);

+#ifdef INET
+       ifubareset(uban);
+#endif

        printf("\n");
        splx(s);
 }
        printf("\n");
        splx(s);
 }


@@ -364,6 +385,7 @@ unhang()
 
                if (up->uba_sr == 0)
                        return;
 
                if (up->uba_sr == 0)
                        return;

+               up->uba_sr = UBASR_CRD|UBASR_LEB;

                uh->uh_hangcnt++;
                if (uh->uh_hangcnt > 5*hz) {
                        uh->uh_hangcnt = 0;
                uh->uh_hangcnt++;
                if (uh->uh_hangcnt > 5*hz) {
                        uh->uh_hangcnt = 0;


@@ -393,6 +415,8 @@ ubawatch()
        }
 }
 
        }
 }
 

+int    ubawedgecnt = 10;
+int    ubacrazy = 500;

 /*
  * This routine is called by the locore code to
  * process a UBA error on an 11/780.  The arguments are passed
 /*
  * This routine is called by the locore code to
  * process a UBA error on an 11/780.  The arguments are passed


@@ -429,11 +453,112 @@ ubaerror(uban, uh, xx, uvec, uba)
        }
        sr = uba->uba_sr;
        s = spl7();
        }
        sr = uba->uba_sr;
        s = spl7();

-       printf("uba%d: uba error sr=%x fmer=%x fubar=%o\n",
-           uban, uba->uba_sr, uba->uba_fmer, 4*uba->uba_fubar);
+       printf("uba%d: uba error sr=%b fmer=%x fubar=%o\n",
+           uban, uba->uba_sr, ubasr_bits, uba->uba_fmer, 4*uba->uba_fubar);

        splx(s);
        uba->uba_sr = sr;
        uvec &= UBABRRVR_DIV;
        splx(s);
        uba->uba_sr = sr;
        uvec &= UBABRRVR_DIV;

+       if (++uh->uh_errcnt % ubawedgecnt == 0) {
+               if (uh->uh_errcnt > ubacrazy)
+                       panic("uba crazy");
+               printf("ERROR LIMIT ");
+               ubareset(uban);
+               uvec = 0;
+               return;
+       }

        return;
 }
 #endif
        return;
 }
 #endif

+
+#ifdef notdef
+/*
+ * This routine allows remapping of previously
+ * allocated UNIBUS bdp and map resources
+ * onto different memory addresses.
+ * It should only be used by routines which need
+ * small fixed length mappings for long periods of time
+ * (like the ARPANET ACC IMP interface).
+ * It only maps kernel addresses.
+ */
+ubaremap(uban, ubinfo, addr)
+       int uban;
+       register unsigned ubinfo;
+       caddr_t addr;
+{
+       register struct uba_hd *uh = &uba_hd[uban];
+       register struct pte *pte, *io;
+       register int temp, bdp;
+       int npf, o;
+
+       o = (int)addr & PGOFSET;
+       bdp = (ubinfo >> 28) & 0xf;
+       npf = (ubinfo >> 18) & 0x3ff;
+       io = &uh->uh_uba->uba_map[(ubinfo >> 9) & 0x1ff];
+       temp = (bdp << 21) | UBAMR_MRV;
+
+       /*
+        * If using buffered data path initiate purge
+        * of old data and set byte offset bit if next
+        * transfer will be from odd address.
+        */
+       if (bdp) {
+               switch (cpu) {
+#if VAX780
+               case VAX_780:
+                       uh->uh_uba->uba_dpr[bdp] |= UBADPR_BNE;
+                       break;
+#endif
+#if VAX750
+               case VAX_750:
+                       uh->uh_uba->uba_dpr[bdp] |=
+                           UBADPR_PURGE|UBADPR_NXM|UBADPR_UCE;
+                       break;
+#endif
+               }
+               if (o & 1)
+                       temp |= UBAMR_BO;
+       }
+
+       /*
+        * Set up the map registers, leaving an invalid reg
+        * at the end to guard against wild unibus transfers.
+        */
+       pte = &Sysmap[btop(((int)addr)&0x7fffffff)];
+       while (--npf != 0)
+               *(int *)io++ = pte++->pg_pfnum | temp;
+       *(int *)io = 0;
+
+       /*
+        * Return effective UNIBUS address.
+        */
+       return (ubinfo | o);
+}
+#endif
+
+/*
+ * This routine is called by a driver for a device with on-board Unibus
+ * memory.  It removes the memory block from the Unibus resource map
+ * and clears the map registers for the block.
+ *
+ * Arguments are the Unibus number, the Unibus address of the memory
+ * block, and its size in blocks of 512 bytes.
+ *
+ * Returns addr if successful, 0 if not.
+ */
+
+ubamem(uban, addr, size)
+{
+       register struct uba_hd *uh = &uba_hd[uban];
+       register int *m;
+       register int i, a, s;
+
+       s = spl6();
+       a = rmget(uh->uh_map, size, addr>>9);
+       splx(s);
+       if (a) {
+               m = (int *) &uh->uh_uba->uba_map[a];
+               for (i=0; i<size; i++)
+                       *m++ = 0;       /* All off, especially 'valid' */
+       }
+       return(a);
+}