/* $NetBSD: uba.c,v 1.9 1995/11/10 19:25:49 ragge Exp $ */ /* * Copyright (c) 1982, 1986 The Regents of the University of California. * Copyright (c) 1994 Ludd, University of Lule}, Sweden. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)uba.c 7.10 (Berkeley) 12/16/90 * @(#)autoconf.c 7.20 (Berkeley) 5/9/91 */ /* All bugs are subject to removal without further notice */ #include "sys/param.h" #include "sys/types.h" #include "sys/time.h" #include "sys/systm.h" #include "sys/map.h" #include "sys/buf.h" #include "sys/proc.h" #include "sys/user.h" #include "sys/conf.h" #include "sys/dkstat.h" #include "sys/kernel.h" #include "sys/malloc.h" #include "sys/device.h" #include "vm/vm.h" #include "vm/vm_kern.h" #include "machine/pte.h" #include "machine/cpu.h" #include "machine/mtpr.h" #include "machine/nexus.h" #include "machine/sid.h" #include "machine/scb.h" #include "machine/trap.h" #include "machine/frame.h" #include "ubareg.h" #include "ubavar.h" int dkn; extern int cold; volatile int rbr,rcvec; int uba_match __P((struct device *, void *, void *)); void uba_attach __P((struct device *, struct device *, void *)); struct cfdriver ubacd = { NULL, "uba", uba_match, uba_attach, DV_DULL, sizeof(struct uba_softc), 1 }; /* * Mark addresses starting at "addr" and continuing * "size" bytes as allocated in the map "ualloc". * Warn if the new allocation overlaps a previous allocation. */ static csralloc(ualloc, addr, size) caddr_t ualloc; u_short addr; register int size; { register caddr_t p; int warned = 0; p = &ualloc[ubdevreg(addr+size)]; while (--size >= 0) { if (*--p && !warned) { printf( "WARNING: device registers overlap those for a previous device!\n"); warned = 1; } *p = 1; } } /* * Stray interrupt vector handler, used when nowhere else to * go to. */ void ubastray(arg) int arg; { struct callsframe *cf = FRAMEOFFSET(arg); struct uba_softc *sc = ubacd.cd_devs[arg]; int vektor; vektor = (cf->ca_pc - (unsigned)&sc->uh_idsp[0]) >> 4; if(cold){ rbr = mfpr(PR_IPL); rcvec = vektor; } else { printf("uba%d: unexpected interrupt, vector %o, level %d", arg, vektor << 2, mfpr(PR_IPL)); } } /* * Find devices on a UNIBUS. * Uses per-driver routine to set into , * and then fills in the tables, with help from a per-driver * slave initialization routine. */ unifind(uhp0, pumem) struct uba_softc *uhp0; caddr_t pumem; { register struct uba_device *ui; register struct uba_ctlr *um; register struct uba_softc *uhp = uhp0; u_short *reg, *ap, addr; struct uba_driver *udp; int i; caddr_t ualloc; volatile extern int br, cvec; volatile extern int rbr, rcvec; #if DW780 || DWBUA struct uba_regs *vubp = uhp->uh_uba; #endif /* * Initialize the UNIBUS, by freeing the map * registers and the buffered data path registers */ uhp->uh_map = (struct map *) malloc((u_long)(UAMSIZ * sizeof (struct map)), M_DEVBUF, M_NOWAIT); if (uhp->uh_map == 0) panic("no mem for unibus map"); bzero((caddr_t)uhp->uh_map, (unsigned)(UAMSIZ * sizeof (struct map))); ubainitmaps(uhp); /* * Set last free interrupt vector for devices with * programmable interrupt vectors. Use is to decrement * this number and use result as interrupt vector. */ uhp->uh_lastiv = 0x200; #ifdef DWBUA if (uhp->uh_type == DWBUA) BUA(vubp)->bua_offset = (int)uhp->uh_vec - (int)&scb[0]; #endif #ifdef DW780 if (uhp->uh_type == DW780) { vubp->uba_sr = vubp->uba_sr; vubp->uba_cr = UBACR_IFS|UBACR_BRIE; } #endif /* * First configure devices that have unibus memory, * allowing them to allocate the correct map registers. */ ubameminit(uhp->uh_dev.dv_unit); /* * Grab some memory to record the umem address space we allocate, * so we can be sure not to place two devices at the same address. * * We could use just 1/8 of this (we only want a 1 bit flag) but * we are going to give it back anyway, and that would make the * code here bigger (which we can't give back), so ... * * One day, someone will make a unibus with something other than * an 8K i/o address space, & screw this totally. */ ualloc = (caddr_t)malloc((u_long)(8 * 1024), M_TEMP, M_NOWAIT); if (ualloc == (caddr_t)0) panic("no mem for unifind"); bzero(ualloc, 8*1024); /* * Map the first page of UNIBUS i/o * space to the first page of memory * for devices which will need to dma * output to produce an interrupt. */ *(int *)(&uhp->uh_mr[0]) = UBAMR_MRV; #define ubaddr(uhp, off) (u_short *)((int)(uhp)->uh_iopage + ubdevreg(off)) /* * Check each unibus mass storage controller. * For each one which is potentially on this uba, * see if it is really there, and if it is record it and * then go looking for slaves. */ for (um = ubminit; udp = um->um_driver; um++) { if (um->um_ubanum != uhp->uh_dev.dv_unit && um->um_ubanum != '?' || um->um_alive) continue; addr = (u_short)(u_long)um->um_addr; /* * use the particular address specified first, * or if it is given as "0", of there is no device * at that address, try all the standard addresses * in the driver til we find it */ for (ap = udp->ud_addr; addr || (addr = *ap++); addr = 0) { if (ualloc[ubdevreg(addr)]) continue; reg = ubaddr(uhp, addr); if (badaddr((caddr_t)reg, 2)) continue; #ifdef DW780 if (uhp->uh_type == DW780 && vubp->uba_sr) { vubp->uba_sr = vubp->uba_sr; continue; } #endif rcvec = 0x200; i = (*udp->ud_probe)(reg, um->um_ctlr, um); #ifdef DW780 if (uhp->uh_type == DW780 && vubp->uba_sr) { vubp->uba_sr = vubp->uba_sr; continue; } #endif if (i == 0) continue; printf("%s%d at uba%d csr %o ", udp->ud_mname, um->um_ctlr, uhp->uh_dev.dv_unit, addr); if (rcvec == 0) { printf("zero vector\n"); continue; } if (rcvec == 0x200) { printf("didn't interrupt\n"); continue; } printf("vec %o, ipl %x\n", rcvec << 2, rbr); csralloc(ualloc, addr, i); um->um_alive = 1; um->um_ubanum = uhp->uh_dev.dv_unit; um->um_hd = uhp; um->um_addr = (caddr_t)reg; udp->ud_minfo[um->um_ctlr] = um; uhp->uh_idsp[rcvec].hoppaddr = (unsigned)um->um_intr; uhp->uh_idsp[rcvec].pushlarg = um->um_ctlr; for (ui = ubdinit; ui->ui_driver; ui++) { int t; if (ui->ui_driver != udp || ui->ui_alive || ui->ui_ctlr != um->um_ctlr && ui->ui_ctlr != '?' || ui->ui_ubanum != uhp->uh_dev.dv_unit && ui->ui_ubanum != '?') continue; t = ui->ui_ctlr; ui->ui_ctlr = um->um_ctlr; if ((*udp->ud_slave)(ui, reg) == 0) ui->ui_ctlr = t; else { ui->ui_alive = 1; ui->ui_ubanum = uhp->uh_dev.dv_unit; ui->ui_hd = uhp; ui->ui_addr = (caddr_t)reg; ui->ui_physaddr = pumem + ubdevreg(addr); if (ui->ui_dk && dkn < DK_NDRIVE) ui->ui_dk = dkn++; else ui->ui_dk = -1; ui->ui_mi = um; /* ui_type comes from driver */ udp->ud_dinfo[ui->ui_unit] = ui; printf("%s%d at %s%d slave %d", udp->ud_dname, ui->ui_unit, udp->ud_mname, um->um_ctlr, ui->ui_slave); (*udp->ud_attach)(ui); printf("\n"); } } break; } } /* * Now look for non-mass storage peripherals. */ for (ui = ubdinit; udp = ui->ui_driver; ui++) { if (ui->ui_ubanum != uhp->uh_dev.dv_unit && ui->ui_ubanum != '?' || ui->ui_alive || ui->ui_slave != -1) continue; addr = (u_short)(u_long)ui->ui_addr; for (ap = udp->ud_addr; addr || (addr = *ap++); addr = 0) { if (ualloc[ubdevreg(addr)]) continue; reg = ubaddr(uhp, addr); if (badaddr((caddr_t)reg, 2)) continue; #ifdef DW780 if (uhp->uh_type == DW780 && vubp->uba_sr) { vubp->uba_sr = vubp->uba_sr; continue; } #endif rcvec = 0x200; i = (*udp->ud_probe)(reg, ui); #ifdef DW780 if (uhp->uh_type == DW780 && vubp->uba_sr) { vubp->uba_sr = vubp->uba_sr; continue; } #endif if (i == 0) continue; printf("%s%d at uba%d csr %o ", ui->ui_driver->ud_dname, ui->ui_unit, uhp->uh_dev.dv_unit, addr); if (rcvec == 0) { printf("zero vector\n"); continue; } if (rcvec == 0x200) { printf("didn't interrupt\n"); continue; } printf("vec %o, ipl %x\n", rcvec << 2, rbr); csralloc(ualloc, addr, i); ui->ui_hd = uhp; uhp->uh_idsp[rcvec].hoppaddr = (unsigned)ui->ui_intr; uhp->uh_idsp[rcvec].pushlarg = ui->ui_unit; ui->ui_alive = 1; ui->ui_ubanum = uhp->uh_dev.dv_unit; ui->ui_addr = (caddr_t)reg; ui->ui_physaddr = pumem + ubdevreg(addr); ui->ui_dk = -1; /* ui_type comes from driver */ udp->ud_dinfo[ui->ui_unit] = ui; (*udp->ud_attach)(ui); break; } } #ifdef DW780 if (uhp->uh_type == DW780) uhp->uh_uba->uba_cr = UBACR_IFS | UBACR_BRIE | UBACR_USEFIE | UBACR_SUEFIE | (uhp->uh_uba->uba_cr & 0x7c000000); #endif #ifdef AUTO_DEBUG printf("Unibus allocation map"); for (i = 0; i < 8*1024; ) { register n, m; if ((i % 128) == 0) { printf("\n%6o:", i); for (n = 0; n < 128; n++) if (ualloc[i+n]) break; if (n == 128) { i += 128; continue; } } for (n = m = 0; n < 16; n++) { m <<= 1; m |= ualloc[i++]; } printf(" %4x", m); } printf("\n"); #endif free(ualloc, M_TEMP); } #ifdef DW780 char ubasr_bits[] = UBASR_BITS; #endif #define spluba splbio /* IPL 17 */ /* * Do transfer on device argument. The controller * and uba involved are implied by the device. * We queue for resource wait in the uba code if necessary. * We return 1 if the transfer was started, 0 if it was not. * * The onq argument must be zero iff the device is not on the * queue for this UBA. If onq is set, the device must be at the * head of the queue. In any case, if the transfer is started, * the device will be off the queue, and if not, it will be on. * * Drivers that allocate one BDP and hold it for some time should * set ud_keepbdp. In this case um_bdp tells which BDP is allocated * to the controller, unless it is zero, indicating that the controller * does not now have a BDP. */ ubaqueue(ui, onq) register struct uba_device *ui; int onq; { register struct uba_ctlr *um = ui->ui_mi; register struct uba_softc *uh; register struct uba_driver *ud; register int s, unit; uh = ubacd.cd_devs[um->um_ubanum]; ud = um->um_driver; s = spluba(); /* * Honor exclusive BDP use requests. */ if (ud->ud_xclu && uh->uh_users > 0 || uh->uh_xclu) goto rwait; if (ud->ud_keepbdp) { /* * First get just a BDP (though in fact it comes with * one map register too). */ if (um->um_bdp == 0) { um->um_bdp = uballoc(um->um_ubanum, (caddr_t)0, 0, UBA_NEEDBDP|UBA_CANTWAIT); if (um->um_bdp == 0) goto rwait; } /* now share it with this transfer */ um->um_ubinfo = ubasetup(um->um_ubanum, um->um_tab.b_actf->b_actf, um->um_bdp|UBA_HAVEBDP|UBA_CANTWAIT); } else um->um_ubinfo = ubasetup(um->um_ubanum, um->um_tab.b_actf->b_actf, UBA_NEEDBDP|UBA_CANTWAIT); if (um->um_ubinfo == 0) goto rwait; uh->uh_users++; if (ud->ud_xclu) uh->uh_xclu = 1; splx(s); if (ui->ui_dk >= 0) { unit = ui->ui_dk; dk_busy |= 1<um_tab.b_actf->b_actf->b_bcount>>6; } if (onq) uh->uh_actf = ui->ui_forw; (*ud->ud_dgo)(um); return (1); rwait: if (!onq) { ui->ui_forw = NULL; if (uh->uh_actf == NULL) uh->uh_actf = ui; else uh->uh_actl->ui_forw = ui; uh->uh_actl = ui; } splx(s); return (0); } ubadone(um) struct uba_ctlr *um; { struct uba_softc *uh = ubacd.cd_devs[um->um_ubanum]; if (um->um_driver->ud_xclu) uh->uh_xclu = 0; uh->uh_users--; if (um->um_driver->ud_keepbdp) um->um_ubinfo &= ~BDPMASK; /* keep BDP for misers */ ubarelse(um->um_ubanum, &um->um_ubinfo); } /* * Allocate and setup UBA map registers, and bdp's * Flags says whether bdp is needed, whether the caller can't * wait (e.g. if the caller is at interrupt level). * Return value encodes map register plus page offset, * bdp number and number of map registers. */ ubasetup(int uban,struct buf *bp,int flags) { struct uba_softc *uh = ubacd.cd_devs[uban]; struct pte *pte, *io; int npf; int pfnum, temp; int reg, bdp; unsigned v; struct proc *rp; int a, o, ubinfo; #ifdef DW730 if (uh->uh_type == DW730) flags &= ~UBA_NEEDBDP; #endif #ifdef QBA if (uh->uh_type == QBA) flags &= ~UBA_NEEDBDP; #endif o = (int)bp->b_un.b_addr & PGOFSET; npf = btoc(bp->b_bcount + o) + 1; if (npf > UBA_MAXNMR) panic("uba xfer too big"); a = spluba(); while ((reg = rmalloc(uh->uh_map, (long)npf)) == 0) { if (flags & UBA_CANTWAIT) { splx(a); return (0); } uh->uh_mrwant++; sleep((caddr_t)&uh->uh_mrwant, PSWP); } if ((flags & UBA_NEED16) && reg + npf > 128) { /* * Could hang around and try again (if we can ever succeed). * Won't help any current device... */ rmfree(uh->uh_map, (long)npf, (long)reg); splx(a); return (0); } bdp = 0; if (flags & UBA_NEEDBDP) { while ((bdp = ffs((long)uh->uh_bdpfree)) == 0) { if (flags & UBA_CANTWAIT) { rmfree(uh->uh_map, (long)npf, (long)reg); splx(a); return (0); } uh->uh_bdpwant++; sleep((caddr_t)&uh->uh_bdpwant, PSWP); } uh->uh_bdpfree &= ~(1 << (bdp-1)); } else if (flags & UBA_HAVEBDP) bdp = (flags >> 28) & 0xf; splx(a); reg--; ubinfo = UBAI_INFO(o, reg, npf, bdp); temp = (bdp << 21) | UBAMR_MRV; if (bdp && (o & 01)) temp |= UBAMR_BO; if ((bp->b_flags & B_PHYS) == 0) pte = (struct pte *)kvtopte(bp->b_un.b_addr); else if (bp->b_flags & B_PAGET) { panic("ubasetup: B_PAGET"); } else { if( bp->b_flags&B_DIRTY){ rp=&pageproc[2]; panic("ubasetup: B_DIRTY"); } else { rp =bp->b_proc; } v = btop((u_int)bp->b_un.b_addr&0x3fffffff); if (bp->b_flags & B_UAREA){ panic("ubasetup: B_UAREA"); } else { /* * It may be better to use pmap_extract() here somewhere, * but so far we do it "the hard way" :) */ u_int *hej; if(((u_int)bp->b_un.b_addr<0x40000000)|| ((u_int)bp->b_un.b_addr>0x7fffffff)){ hej=rp->p_vmspace->vm_pmap.pm_pcb->P0BR; } else { hej=rp->p_vmspace->vm_pmap.pm_pcb->P1BR; } pte=(struct pte*)&hej[v]; } } io = &uh->uh_mr[reg]; while (--npf > 0) { pfnum = pte->pg_pfn; if (pfnum == 0) panic("uba zero uentry"); pte++; *(int *)io++ = pfnum | temp; } *(int *)io = 0; return (ubinfo); } /* * Non buffer setup interface... set up a buffer and call ubasetup. */ uballoc(int uban,caddr_t addr,int bcnt,int flags) { struct buf ubabuf; ubabuf.b_un.b_addr = addr; ubabuf.b_flags = B_BUSY; ubabuf.b_bcount = bcnt; /* that's all the fields ubasetup() needs */ return (ubasetup(uban, &ubabuf, flags)); } /* * Release resources on uba uban, and then unblock resource waiters. * The map register parameter is by value since we need to block * against uba resets on 11/780's. */ ubarelse(uban, amr) int *amr; { register struct uba_softc *uh = ubacd.cd_devs[uban]; register int bdp, reg, npf, s; int mr; /* * Carefully see if we should release the space, since * it may be released asynchronously at uba reset time. */ s = spluba(); mr = *amr; if (mr == 0) { /* * A ubareset() occurred before we got around * to releasing the space... no need to bother. */ splx(s); return; } *amr = 0; bdp = UBAI_BDP(mr); if (bdp) { switch (uh->uh_type) { #ifdef DWBUA case DWBUA: BUA(uh->uh_uba)->bua_dpr[bdp] |= BUADPR_PURGE; break; #endif #ifdef DW780 sdjhfgsadjkfhgasj case DW780: uh->uh_uba->uba_dpr[bdp] |= UBADPR_BNE; break; #endif #ifdef DW750 case DW750: uh->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE|UBADPR_NXM|UBADPR_UCE; break; #endif default: break; } uh->uh_bdpfree |= 1 << (bdp-1); /* atomic */ if (uh->uh_bdpwant) { uh->uh_bdpwant = 0; wakeup((caddr_t)&uh->uh_bdpwant); } } /* * Put back the registers in the resource map. * The map code must not be reentered, * nor can the registers be freed twice. * Unblock interrupts once this is done. */ npf = UBAI_NMR(mr); reg = UBAI_MR(mr) + 1; rmfree(uh->uh_map, (long)npf, (long)reg); splx(s); /* * Wakeup sleepers for map registers, * and also, if there are processes blocked in dgo(), * give them a chance at the UNIBUS. */ if (uh->uh_mrwant) { uh->uh_mrwant = 0; wakeup((caddr_t)&uh->uh_mrwant); } while (uh->uh_actf && ubaqueue(uh->uh_actf, 1)) ; } ubapurge(um) register struct uba_ctlr *um; { register struct uba_softc *uh = um->um_hd; register int bdp = UBAI_BDP(um->um_ubinfo); switch (uh->uh_type) { #ifdef DWBUA case DWBUA: BUA(uh->uh_uba)->bua_dpr[bdp] |= BUADPR_PURGE; break; #endif #ifdef DW780 case DW780: uh->uh_uba->uba_dpr[bdp] |= UBADPR_BNE; break; #endif #ifdef DW750 case DW750: uh->uh_uba->uba_dpr[bdp] |= UBADPR_PURGE|UBADPR_NXM|UBADPR_UCE; break; #endif default: break; } } ubainitmaps(uhp) register struct uba_softc *uhp; { if (uhp->uh_memsize > UBA_MAXMR) uhp->uh_memsize = UBA_MAXMR; rminit(uhp->uh_map, (long)uhp->uh_memsize, (long)1, "uba", UAMSIZ); switch (uhp->uh_type) { #ifdef DWBUA case DWBUA: uhp->uh_bdpfree = (1<uh_bdpfree = (1<uh_bdpfree = (1<uh_users = 0; uh->uh_zvcnt = 0; uh->uh_xclu = 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); ubameminit(uban); /* XXX - ??? * Intressant, vi m}ste l|sa det h{r med ubareset() p} n}t smart * s{tt. En l{nkad lista som s{tts upp vid autoconfiggen? Kanske. * N{r anv{nds dom? Jag vet faktiskt inte; det verkar vara en * ren sm|rja den gamla koden. F}r peturba lite mer docs... * 950428/Ragge */ /* for (cdp = cdevsw; cdp < cdevsw + nchrdev; cdp++) (*cdp->d_reset)(uban); ifubareset(uban); */ printf("\n"); splx(s); } /* * Init a uba. This is called with a pointer * rather than a virtual address since it is called * by code which runs with memory mapping disabled. * In these cases we really don't need the interrupts * enabled, but since we run with ipl high, we don't care * if they are, they will never happen anyways. * SHOULD GET POINTER TO UBA_HD INSTEAD OF UBA. */ ubainit(uba) register struct uba_regs *uba; { register struct uba_softc *uhp; #ifdef QBA int isphys = 0; #endif panic("ubainit"); #if 0 for (uhp = uba_hd; uhp < uba_hd + numuba; uhp++) { if (uhp->uh_uba == uba) break; if (uhp->uh_physuba == uba) { #ifdef QBA isphys++; #endif break; } } if (uhp >= uba_hd + numuba) { printf("init unknown uba\n"); return; } #endif switch (uhp->uh_type) { #ifdef DWBUA case DWBUA: BUA(uba)->bua_csr |= BUACSR_UPI; /* give devices time to recover from power fail */ waitabit(500); break; #endif #ifdef DW780 case DW780: 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 #ifdef DW750 case DW750: #endif #ifdef DW730 case DW730: #endif #ifdef QBA case QBA: #endif #if DW750 || DW730 || QBA mtpr(0, PR_IUR); /* give devices time to recover from power fail */ #if 0 /* THIS IS PROBABLY UNNECESSARY */ waitabit(50); /* END PROBABLY UNNECESSARY */ #endif #ifdef QBA /* * Re-enable local memory access * from the Q-bus. */ if (uhp->uh_type == QBA) { if (isphys) *((char *)QIOPAGE630 + QIPCR) = Q_LMEAE; else *(uhp->uh_iopage + QIPCR) = Q_LMEAE; } #endif QBA break; #endif DW750 || DW730 || QBA } } #ifdef QBA /* * Determine the interrupt priority of a Q-bus * peripheral. The device probe routine must spl6(), * attempt to make the device request an interrupt, * delaying as necessary, then call this routine * before resetting the device. */ qbgetpri() { int pri; extern int cvec; panic("qbgetpri"); #if 0 for (pri = 0x17; pri > 0x14; ) { if (cvec && cvec != 0x200) /* interrupted at pri */ break; pri--; splx(pri - 1); } (void) spl0(); return (pri); #endif } #endif #ifdef DW780 int ubawedgecnt = 10; int ubacrazy = 500; int zvcnt_max = 5000; /* in 8 sec */ /* * This routine is called by the locore code to process a UBA * error on an 11/780 or 8600. The arguments are passed * on the stack, and value-result (through some trickery). * In particular, the uvec argument is used for further * uba processing so the result aspect of it is very important. * It must not be declared register. */ /*ARGSUSED*/ ubaerror(uban, uh, ipl, uvec, uba) register int uban; register struct uba_softc *uh; int ipl, uvec; register struct uba_regs *uba; { register sr, s; if (uvec == 0) { /* * Declare dt as unsigned so that negative values * are handled as >8 below, in case time was set back. */ u_long dt = time.tv_sec - uh->uh_zvtime; uh->uh_zvtotal++; if (dt > 8) { uh->uh_zvtime = time.tv_sec; uh->uh_zvcnt = 0; } if (++uh->uh_zvcnt > zvcnt_max) { printf("uba%d: too many zero vectors (%d in <%d sec)\n", uban, uh->uh_zvcnt, dt + 1); printf("\tIPL 0x%x\n\tcnfgr: %b Adapter Code: 0x%x\n", ipl, uba->uba_cnfgr&(~0xff), UBACNFGR_BITS, uba->uba_cnfgr&0xff); printf("\tsr: %b\n\tdcr: %x (MIC %sOK)\n", uba->uba_sr, ubasr_bits, uba->uba_dcr, (uba->uba_dcr&0x8000000)?"":"NOT "); ubareset(uban); } return; } if (uba->uba_cnfgr & NEX_CFGFLT) { 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 = spluba(); 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; if (++uh->uh_errcnt % ubawedgecnt == 0) { if (uh->uh_errcnt > ubacrazy) panic("uba crazy"); printf("ERROR LIMIT "); ubareset(uban); uvec = 0; return; } return; } #endif /* * Look for devices with unibus memory, allow them to configure, then disable * map registers as necessary. Called during autoconfiguration and ubareset. * The device ubamem routine returns 0 on success, 1 on success if it is fully * configured (has no csr or interrupt, so doesn't need to be probed), * and -1 on failure. */ ubameminit(uban) { register struct uba_device *ui; register struct uba_softc *uh = ubacd.cd_devs[uban]; caddr_t umembase, addr; #define ubaoff(off) ((int)(off) & 0x1fff) umembase = uh->uh_iopage; uh->uh_lastmem = 0; for (ui = ubdinit; ui->ui_driver; ui++) { if (ui->ui_ubanum != uban && ui->ui_ubanum != '?') continue; if (ui->ui_driver->ud_ubamem) { /* * During autoconfiguration, need to fudge ui_addr. */ addr = ui->ui_addr; ui->ui_addr = umembase + ubaoff(addr); switch ((*ui->ui_driver->ud_ubamem)(ui, uban)) { case 1: ui->ui_alive = 1; /* FALLTHROUGH */ case 0: ui->ui_ubanum = uban; break; } ui->ui_addr = addr; } } #ifdef DW780 jdhfgsjdkfhgsdjkfghak /* * On a DW780, throw away any map registers disabled by rounding * the map disable in the configuration register * up to the next 8K boundary, or below the last unibus memory. */ if (uh->uh_type == DW780) { register i; i = btop(((uh->uh_lastmem + 8191) / 8192) * 8192); while (i) (void) rmget(uh->uh_map, 1, i--); } #endif } rmget(){ showstate(curproc); panic("rmget() not implemented. (in uba.c)"); } /* * Allocate UNIBUS memory. Allocates and initializes * sufficient mapping registers for access. On a 780, * the configuration register is setup to disable UBA * response on DMA transfers to addresses controlled * by the disabled mapping registers. * On a DW780, should only be called from ubameminit, or in ascending order * from 0 with 8K-sized and -aligned addresses; freeing memory that isn't * the last unibus memory would free unusable map registers. * Doalloc is 1 to allocate, 0 to deallocate. */ ubamem(uban, addr, npg, doalloc) int uban, addr, npg, doalloc; { register struct uba_softc *uh = ubacd.cd_devs[uban]; register int a; int s; a = (addr >> 9) + 1; s = spluba(); if (doalloc) a = rmget(uh->uh_map, npg, a); else rmfree(uh->uh_map, (long)npg, (long)a); splx(s); if (a) { register int i, *m; m = (int *)&uh->uh_mr[a - 1]; for (i = 0; i < npg; i++) *m++ = 0; /* All off, especially 'valid' */ i = addr + npg * 512; if (doalloc && i > uh->uh_lastmem) uh->uh_lastmem = i; else if (doalloc == 0 && i == uh->uh_lastmem) uh->uh_lastmem = addr; #ifdef DW780 /* * On a 780, set up the map register disable * field in the configuration register. Beware * of callers that request memory ``out of order'' * or in sections other than 8K multiples. * Ubameminit handles such requests properly, however. */ if (uh->uh_type == DW780) { i = uh->uh_uba->uba_cr &~ 0x7c000000; i |= ((uh->uh_lastmem + 8191) / 8192) << 26; uh->uh_uba->uba_cr = i; } #endif } return (a); } #include "ik.h" #include "vs.h" #if NIK > 0 || NVS > 0 /* * Map a virtual address into users address space. Actually all we * do is turn on the user mode write protection bits for the particular * page of memory involved. */ maptouser(vaddress) caddr_t vaddress; { kvtopte(vaddress)->pg_prot = (PG_UW >> 27); } unmaptouser(vaddress) caddr_t vaddress; { kvtopte(vaddress)->pg_prot = (PG_KW >> 27); } #endif resuba() { showstate(curproc); panic("resuba"); } int uba_match(parent, vcf, aux) struct device *parent; void *vcf, *aux; { struct sbi_attach_args *sa = (struct sbi_attach_args *)aux; struct cfdata *cf = vcf; if ((cf->cf_loc[0] != sa->nexnum) && (cf->cf_loc[0] > -1 )) return 0; switch (sa->type) { case NEX_UBA0: sa->nexinfo = 0; break; case NEX_UBA1: sa->nexinfo = 1; break; case NEX_UBA2: sa->nexinfo = 2; break; case NEX_UBA3: sa->nexinfo = 3; break; default: return 0; } return 1; } void uba_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct sbi_attach_args *sa = (struct sbi_attach_args *)aux; struct uba_regs *ubar = (struct uba_regs *)sa->nexaddr; struct uba_softc *sc = (struct uba_softc *)self; vm_offset_t min, max, ubaphys, ubaiophys; void ubascan(); printf("\n"); /* * Allocate place for unibus memory in virtual space. * This is done with kmem_suballoc() but after that * never used in the vm system. Is it OK to do so? */ (void)kmem_suballoc(kernel_map, &min, &max, (UBAPAGES + UBAIOPAGES) * NBPG, FALSE); sc->uh_mem = (caddr_t)min; sc->uh_uba = (void*)ubar; sc->uh_memsize = UBAPAGES; sc->uh_iopage = (void *)min + (sc->uh_memsize * NBPG); sc->uh_iarea = (void *)scb + NBPG + sa->nexinfo * NBPG; /* * Create interrupt dispatchers for this uba. */ #define NO_IVEC 128 { vm_offset_t iarea; extern struct ivec_dsp idsptch; int i; iarea = kmem_alloc(kernel_map, NO_IVEC * sizeof(struct ivec_dsp)); sc->uh_idsp = (struct ivec_dsp *)iarea; for (i = 0; i < NO_IVEC; i++) { bcopy(&idsptch, &sc->uh_idsp[i], sizeof(struct ivec_dsp)); sc->uh_idsp[i].pushlarg = sa->nexinfo; sc->uh_idsp[i].hoppaddr = (unsigned int)ubastray; sc->uh_iarea[i] = (unsigned int)&sc->uh_idsp[i]; } } switch (cpunumber) { #if VAX750 case VAX_750: sc->uh_mr = (void *)ubar->uba_map; sc->uh_type = DW750; sc->uh_physuba = (struct uba_regs *)kvtophys(sa->nexaddr); ubaphys = UMEM750(sa->nexinfo); ubaiophys = UMEM750(sa->nexinfo) + (UBAPAGES * NBPG); break; #endif #if VAX630 || VAX410 case VAX_78032: switch (cpu_type) { #if VAX630 case VAX_630: sc->uh_mr = (void *)sa->nexaddr; sc->uh_type = QBA; sc->uh_physuba = (void*)QBAMAP630; ubaphys = QMEM630; ubaiophys = QIOPAGE630; break; #endif }; break; #endif }; /* * Map uba space in kernel virtual; especially i/o space. */ pmap_map(min, ubaphys, ubaphys + (UBAPAGES * NBPG), VM_PROT_READ|VM_PROT_WRITE); pmap_map(min + (UBAPAGES * NBPG), ubaiophys, ubaiophys + (UBAIOPAGES * NBPG), VM_PROT_READ|VM_PROT_WRITE); #if VAX630 /* Enable access to local memory. */ if (cpu_type == VAX_630) *((u_short *)(sc->uh_iopage + QIPCR)) = Q_LMEAE; #endif #ifdef notyet config_scan(ubascan,self); #else unifind(sc, ubaiophys); #endif }