/* $NetBSD: asic.c,v 1.2 1995/08/10 04:30:41 jonathan Exp $ */ /* * Copyright (c) 1994, 1995 Carnegie-Mellon University. * All rights reserved. * * Author: Keith Bostic, Chris G. Demetriou, Jonathan Stone * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include #include #include #include #include #include #if 0 #include #include #include #endif #ifdef pmax #include #include #include #include #include #include #include #include /* interrupt enable declaration */ #include #include #include #include extern int cputype; #endif struct asic_softc { struct device sc_dv; struct abus sc_bus; caddr_t sc_base; }; /* Definition of the driver for autoconfig. */ int asicmatch __P((struct device *, void *, void *)); void asicattach __P((struct device *, struct device *, void *)); int asicprint(void *, char *); struct cfdriver asiccd = { NULL, "asic", asicmatch, asicattach, DV_DULL, sizeof(struct asic_softc) }; void asic_intr_establish __P((struct confargs *, intr_handler_t, handler_arg_t)); void asic_intr_disestablish __P((struct confargs *)); caddr_t asic_cvtaddr __P((struct confargs *)); int asic_matchname __P((struct confargs *, char *)); #ifndef pmax int asic_intr __P((void *)); #endif int asic_intrnull __P((handler_arg_t)); struct asic_slot { struct confargs as_ca; u_int as_bits; intr_handler_t as_handler; void *as_val; }; #ifdef pmax struct asic_slot *asic_slots; #include "ds-asic-conf.c" #else /*!pmax*/ struct asic_slot asic_slots[ASIC_MAX_NSLOTS] = { { { "lance", /* XXX */ 0, 0x000c0000, }, ASIC_INTR_LANCE, asic_intrnull, (void *)(long)ASIC_SLOT_LANCE, }, { { "scc", /* XXX */ 1, 0x00100000, }, ASIC_INTR_SCC_0, asic_intrnull, (void *)(long)ASIC_SLOT_SCC0, }, { { "scc", /* XXX */ 2, 0x00180000, }, ASIC_INTR_SCC_1, asic_intrnull, (void *)(long)ASIC_SLOT_SCC1, }, { { "dallas_rtc", /* XXX */ 3, 0x00200000, }, 0, asic_intrnull, (void *)(long)ASIC_SLOT_RTC, }, { { "AMD79c30", /* XXX */ 4, 0x00240000, }, 0 /* XXX */, asic_intrnull, (void *)(long)ASIC_SLOT_ISDN, }, }; #endif /*!pmax*/ caddr_t asic_base; /* XXX XXX XXX */ int asicmatch(parent, cfdata, aux) struct device *parent; void *cfdata; void *aux; { struct cfdata *cf = cfdata; struct confargs *ca = aux; /* It can only occur on the turbochannel, anyway. */ if (ca->ca_bus->ab_type != BUS_TC) return (0); /* The 3MAX (kn02) is special. */ if (BUS_MATCHNAME(ca, KN02_ASIC_NAME)) { printf("(configuring KN02 system slot as asic)\n"); goto gotasic; } /* Make sure that we're looking for this type of device. */ if (!BUS_MATCHNAME(ca, "IOCTL ")) return (0); gotasic: /* See if the unit number is valid. */ switch (cputype) { case DS_3MIN: if (cf->cf_unit > 0) return (0); asic_slots = NULL; break; case DS_MAXINE: if (cf->cf_unit > 0) return (0); asic_slots = NULL; break; case DS_3MAX: if (cf->cf_unit > 0) return (0); asic_slots = kn02_asic_slots; break; case DS_3MAXPLUS: if (cf->cf_unit > 0) return (0); asic_slots = kn03_asic_slots; break; default: printf("no ASIC config table for this machine\n"); return (0); } return (1); } void asicattach(parent, self, aux) struct device *parent, *self; void *aux; { struct asic_softc *sc = (struct asic_softc *)self; struct confargs *ca = aux; struct confargs *nca; int i; extern int cputype; if (asic_slots == NULL) panic("asicattach: no asic_slot map\n"); sc->sc_base = BUS_CVTADDR(ca); asic_base = sc->sc_base; /* XXX XXX XXX */ sc->sc_bus.ab_dv = (struct device *)sc; sc->sc_bus.ab_type = BUS_ASIC; sc->sc_bus.ab_intr_establish = asic_intr_establish; sc->sc_bus.ab_intr_disestablish = asic_intr_disestablish; sc->sc_bus.ab_cvtaddr = asic_cvtaddr; sc->sc_bus.ab_matchname = asic_matchname; #ifdef pmax printf("\n"); #else /* Alpha AXP: select ASIC speed */ #ifdef DEC_3000_300 if (cputype == ST_DEC_3000_300) { *(volatile u_int *)ASIC_REG_CSR(sc->sc_base) |= ASIC_CSR_FASTMODE; MB(); printf(": slow mode\n"); } else #endif /*DEC_3000_300*/ printf(": fast mode\n"); /* Decstations use hand-craft code to enable asic interrupts */ BUS_INTR_ESTABLISH(ca, asic_intr, sc); #endif /* Alpha AXP: select ASIC speed */ /* The MAXINE has seven pseudo-slots in its system slot */ #define ASIC_MAX_NSLOTS 7 /*XXX*/ /* Try to configure each CPU-internal device */ for (i = 0; i < ASIC_MAX_NSLOTS; i++) { #ifdef DEBUG_ASIC printf("asicattach: entry %d\n", i); /*XXX*/ #endif nca = &asic_slots[i].as_ca; if (nca == NULL) panic ("bad asic table\n"); if (nca->ca_name == NULL && nca->ca_bus == NULL) break; nca->ca_bus = &sc->sc_bus; #ifdef DEBUG_ASIC printf(" adding %s subslot %d offset %x\n", /*XXX*/ nca->ca_name, nca->ca_slot, nca->ca_offset); #endif /* Tell the autoconfig machinery we've found the hardware. */ config_found(self, nca, asicprint); } } int asicprint(aux, pnp) void *aux; char *pnp; { struct confargs *ca = aux; if (pnp) printf("%s at %s", ca->ca_name, pnp); printf(" offset 0x%lx", ca->ca_offset); return (UNCONF); } /* * Save interrupt slotname and enable mask (??) * On decstaitons this isn't useful, as the turbochannel * decstations all have incompatible ways of mapping interrupts * to IO ASIC or r3000 interrupt bits. * Instead of writing "as_bits" directly into an IOASIC interrupt-enable * register, Decstations use a machine-dependent function that * interpret (pseudo-) slot numbers and do ``the right thing'' to enable * or disable interrupts for a specific slot (or pseudo-slot), by * slot number, on that given CPU. */ void asic_intr_establish(ca, handler, val) struct confargs *ca; intr_handler_t handler; handler_arg_t val; { #ifdef DIAGNOSTIC if (ca->ca_slot == ASIC_SLOT_RTC) panic("setting clock interrupt incorrectly"); #endif /*DIAGNOSTIC*/ /* XXX SHOULD NOT BE THIS LITERAL */ if (asic_slots[ca->ca_slot].as_handler != asic_intrnull) /*panic*/ printf("asic_intr_establish: slot %d twice", ca->ca_slot); /* * XXX We need to invent a better interface to machine-dependent * interrupt-enable code, or redo the Decstation configuration * tables with unused entries, so that slot is always equal * to "priority" (software pseudo-slot number). */ #ifdef pmax #ifdef DEBUG_ASIC printf("asic:%s%d: intr for entry %d(%d) slot %d\n", ca->ca_name, val, ca->ca_slot, ca->ca_slotpri, asic_slots[ca->ca_slot].as_val); #endif /*DEBUG*/ tc_enable_interrupt(ca->ca_slotpri, handler, (int)val, 1); #else /* Alpha AXP */ /* Save handler info so it can be enabled later (??) */ asic_slots[ca->ca_slot].as_handler = handler; asic_slots[ca->ca_slot].as_val = val; #endif /* Alpha AXP */ } void asic_intr_disestablish(ca) struct confargs *ca; { #ifdef pmax panic("asic_intr_disestablish: shouldn't ever be called\n"); #else if (ca->ca_slot == ASIC_SLOT_RTC) panic("asic_intr_disestablish: can't do clock interrupt"); /* XXX SHOULD NOT BE THIS LITERAL */ if (asic_slots[ca->ca_slot].as_handler == asic_intrnull) panic("asic_intr_disestablish: slot %d missing intr", ca->ca_slot); asic_slots[ca->ca_slot].as_handler = dsasic_intrnull; asic_slots[ca->ca_slot].as_val = (void *)(long)ca->ca_slot; #endif } caddr_t asic_cvtaddr(ca) struct confargs *ca; { return (((struct asic_softc *)ca->ca_bus->ab_dv)->sc_base + ca->ca_offset); } int asic_matchname(ca, name) struct confargs *ca; char *name; { return (strcmp(name, ca->ca_name) == 0); } #ifndef pmax /* * asic_intr -- * ASIC interrupt handler. */ int asic_intr(val) void *val; { register struct asic_softc *sc = val; register int i, ifound; int gifound; u_int32_t sir, junk; volatile u_int32_t *sirp, *junkp; sirp = (volatile u_int32_t *)ASIC_REG_INTR(sc->sc_base); gifound = 0; do { ifound = 0; MB(); MAGIC_READ; MB(); sir = *sirp; for (i = 0; i < ASIC_MAX_NSLOTS; i++) if (sir & asic_slots[i].as_bits) { (void)(*asic_slots[i].as_handler) (asic_slots[i].as_val); ifound = 1; } gifound |= ifound; } while (ifound); return (gifound); } #endif /*!pmax*/ int asic_intrnull(val) handler_arg_t val; { panic("uncaught IOCTL ASIC intr for slot %ld\n", (long)val); }