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 93e1531..a4e419d 100644 (file)
--- a/usr/src/sys/vax/uba/uba.c
+++ b/usr/src/sys/vax/uba/uba.c
@@ -1,6 +1,4 @@
-/*     uba.c   4.18    %G%     */
-
-#define        DELAY(N)        { register int d; d = N; while (--d > 0); }
+/*     uba.c   4.45    82/05/26        */

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


@@ -9,7 +7,8 @@
 #include "../h/pte.h"
 #include "../h/buf.h"
 #include "../h/vm.h"
 #include "../h/pte.h"
 #include "../h/buf.h"
 #include "../h/vm.h"

-#include "../h/uba.h"
+#include "../h/ubareg.h"
+#include "../h/ubavar.h"

 #include "../h/dir.h"
 #include "../h/user.h"
 #include "../h/proc.h"
 #include "../h/dir.h"
 #include "../h/user.h"
 #include "../h/proc.h"


@@ -18,6 +17,10 @@
 #include "../h/nexus.h"
 #include "../h/dk.h"
 
 #include "../h/nexus.h"
 #include "../h/dk.h"
 

+#if VAX780
+char   ubasr_bits[] = UBASR_BITS;
+#endif
+

 /*
  * Do transfer on device argument.  The controller
  * and uba involved are implied by the device.
 /*
  * Do transfer on device argument.  The controller
  * and uba involved are implied by the device.


@@ -32,9 +35,9 @@
  * of the request queue is likely to be a disaster.
  */
 ubago(ui)
  * of the request queue is likely to be a disaster.
  */
 ubago(ui)

-       register struct uba_dinfo *ui;
+       register struct uba_device *ui;

 {
 {

-       register struct uba_minfo *um = ui->ui_mi;
+       register struct uba_ctlr *um = ui->ui_mi;

        register struct uba_hd *uh;
        register int s, unit;
 
        register struct uba_hd *uh;
        register int s, unit;
 


@@ -53,14 +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) {


@@ -76,7 +77,7 @@ rwait:
 }
 
 ubadone(um)
 }
 
 ubadone(um)

-       register struct uba_minfo *um;
+       register struct uba_ctlr *um;

 {
        register struct uba_hd *uh = &uba_hd[um->um_ubanum];
 
 {
        register struct uba_hd *uh = &uba_hd[um->um_ubanum];
 


@@ -108,13 +109,19 @@ ubasetup(uban, bp, flags)
        struct proc *rp;
        int a, o, ubinfo;
 
        struct proc *rp;
        int a, o, ubinfo;
 

+#if VAX730
+       if (cpu == VAX_730)
+               flags &= ~UBA_NEEDBDP;
+#endif

        v = btop(bp->b_un.b_addr);
        o = (int)bp->b_un.b_addr & PGOFSET;
        npf = btoc(bp->b_bcount + o) + 1;
        a = spl6();
        while ((reg = rmalloc(uh->uh_map, npf)) == 0) {
        v = btop(bp->b_un.b_addr);
        o = (int)bp->b_un.b_addr & PGOFSET;
        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);
        }


@@ -123,41 +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) | UBA_MRV;
-       rp = bp->b_flags&B_DIRTY ? &proc[2] : bp->b_proc;
+       temp = (bdp << 21) | UBAMR_MRV;

        if (bdp && (o & 01))
        if (bdp && (o & 01))

-               temp |= UBA_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) {
+               temp |= UBAMR_BO;
+       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);


@@ -167,8 +168,9 @@ ubasetup(uban, bp, flags)
  * Non buffer setup interface... set up a buffer and call ubasetup.
  */
 uballoc(uban, addr, bcnt, flags)
  * Non buffer setup interface... set up a buffer and call ubasetup.
  */
 uballoc(uban, addr, bcnt, flags)

+       int uban;

        caddr_t addr;
        caddr_t addr;

-       unsigned short bcnt;
+       int bcnt, flags;

 {
        struct buf ubabuf;
 
 {
        struct buf ubabuf;
 


@@ -212,12 +214,13 @@ ubarelse(uban, amr)
                switch (cpu) {
 #if VAX780
                case VAX_780:
                switch (cpu) {
 #if VAX780
                case VAX_780:

-                       uh->uh_uba->uba_dpr[bdp] |= UBA_BNE;
+                       uh->uh_uba->uba_dpr[bdp] |= UBADPR_BNE;

                        break;
 #endif
 #if VAX750
                case VAX_750:
                        break;
 #endif
 #if VAX750
                case VAX_750:

-                       uh->uh_uba->uba_dpr[bdp] |= UBA_PURGE|UBA_NXM|UBA_UCE;
+                       uh->uh_uba->uba_dpr[bdp] |=
+                           UBADPR_PURGE|UBADPR_NXM|UBADPR_UCE;

                        break;
 #endif
                }
                        break;
 #endif
                }


@@ -252,7 +255,7 @@ ubarelse(uban, amr)
 }
 
 ubapurge(um)
 }
 
 ubapurge(um)

-       register struct uba_minfo *um;
+       register struct uba_ctlr *um;

 {
        register struct uba_hd *uh = um->um_hd;
        register int bdp = (um->um_ubinfo >> 28) & 0x0f;
 {
        register struct uba_hd *uh = um->um_hd;
        register int bdp = (um->um_ubinfo >> 28) & 0x0f;


@@ -260,12 +263,35 @@ ubapurge(um)
        switch (cpu) {
 #if VAX780
        case VAX_780:
        switch (cpu) {
 #if VAX780
        case VAX_780:

-               uh->uh_uba->uba_dpr[bdp] |= UBA_BNE;
+               uh->uh_uba->uba_dpr[bdp] |= UBADPR_BNE;

                break;
 #endif
 #if VAX750
        case VAX_750:
                break;
 #endif
 #if VAX750
        case VAX_750:

-               uh->uh_uba->uba_dpr[bdp] |= UBA_PURGE|UBA_NXM|UBA_UCE;
+               uh->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE|UBADPR_NXM|UBADPR_UCE;
+               break;
+#endif
+       }
+}
+
+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
        }
                break;
 #endif
        }


@@ -291,30 +317,20 @@ 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);
        wakeup((caddr_t)&uh->uh_bdpwant);
        wakeup((caddr_t)&uh->uh_mrwant);

-       switch (cpu) {
-#if VAX780
-       case VAX_780:
-               printf("UBA RESET %d:", uban);
-               ubainit(uh->uh_uba);
-               break;
-#endif
-#if VAX750
-       case VAX_750:
-               printf("UNIBUS INIT:");
-               mtpr(IUR, 1);
-               DELAY(100000);
-               break;
-#endif
-       }
+       printf("uba%d: reset", uban);
+       ubainit(uh->uh_uba);

        for (cdp = cdevsw; cdp->d_open; cdp++)
                (*cdp->d_reset)(uban);
        for (cdp = cdevsw; cdp->d_open; cdp++)
                (*cdp->d_reset)(uban);

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

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

-#if VAX780

 /*
  * Init a uba.  This is called with a pointer
  * rather than a virtual address since it is called
 /*
  * Init a uba.  This is called with a pointer
  * rather than a virtual address since it is called


@@ -327,12 +343,33 @@ ubainit(uba)
        register struct uba_regs *uba;
 {
 
        register struct uba_regs *uba;
 {
 

-       uba->uba_cr = UBA_ADINIT;
-       uba->uba_cr = UBA_IFS|UBA_BRIE|UBA_USEFIE|UBA_SUEFIE;
-       while ((uba->uba_cnfgr & UBA_UBIC) == 0)
-               ;
+       switch (cpu) {
+#if VAX780
+       case VAX_780:
+               uba->uba_cr = UBACR_ADINIT;
+               uba->uba_cr = UBACR_IFS|UBACR_BRIE|UBACR_USEFIE|UBACR_SUEFIE;
+               while ((uba->uba_cnfgr & UBACNFGR_UBIC) == 0)
+                       ;
+               break;
+#endif
+#if VAX750
+       case VAX_750:
+#endif
+#if VAX730
+       case VAX_730:
+#endif
+#if defined(VAX750) || defined(VAX730)
+               mtpr(IUR, 0);
+               /* give devices time to recover from power fail */
+/* THIS IS PROBABLY UNNECESSARY */
+               DELAY(500000);
+/* END PROBABLY UNNECESSARY */
+               break;
+#endif
+       }

 }
 
 }
 

+#if VAX780

 /*
  * Check to make sure the UNIBUS adaptor is not hung,
  * with an interrupt in the register to be presented,
 /*
  * Check to make sure the UNIBUS adaptor is not hung,
  * with an interrupt in the register to be presented,


@@ -348,10 +385,11 @@ 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;

-                       printf("HANG ");
+                       printf("uba%d: hung\n", uban);

                        ubareset(uban);
                }
        }
                        ubareset(uban);
                }
        }


@@ -377,6 +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


@@ -397,26 +437,128 @@ ubaerror(uban, uh, xx, uvec, uba)
        if (uvec == 0) {
                uh->uh_zvcnt++;
                if (uh->uh_zvcnt > 250000) {
        if (uvec == 0) {
                uh->uh_zvcnt++;
                if (uh->uh_zvcnt > 250000) {

-                       printf("ZERO VECTOR ");
+                       printf("uba%d: too many zero vectors\n");

                        ubareset(uban);
                }
                uvec = 0;
                return;
        }
        if (uba->uba_cnfgr & NEX_CFGFLT) {
                        ubareset(uban);
                }
                uvec = 0;
                return;
        }
        if (uba->uba_cnfgr & NEX_CFGFLT) {

-               printf("UBA%d SBI FAULT sr %x cnfgr %x\n",
-                   uban, uba->uba_sr, uba->uba_cnfgr);
+               printf("uba%d: sbi fault sr=%b cnfgr=%b\n",
+                   uban, uba->uba_sr, ubasr_bits,
+                   uba->uba_cnfgr, NEXFLT_BITS);

                ubareset(uban);
                uvec = 0;
                return;
        }
        sr = uba->uba_sr;
        s = spl7();
                ubareset(uban);
                uvec = 0;
                return;
        }
        sr = uba->uba_sr;
        s = spl7();

-       printf("UBA%d 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;
        splx(s);
        uba->uba_sr = sr;

-       uvec &= UBA_DIV;
+       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);
+}