/* $NetBSD: vsbus.c,v 1.16 1999/03/13 15:16:48 ragge Exp $ */ /* * Copyright (c) 1996 Ludd, University of Lule}, Sweden. * All rights reserved. * * This code is derived from software contributed to Ludd by Bertram Barth. * * 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 at Ludd, University of * Lule}, Sweden and its contributors. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" int vsbus_match __P((struct device *, struct cfdata *, void *)); void vsbus_attach __P((struct device *, struct device *, void *)); int vsbus_print __P((void *, const char *)); int vsbus_search __P((struct device *, struct cfdata *, void *)); void ka410_attach __P((struct device *, struct device *, void *)); void ka43_attach __P((struct device *, struct device *, void *)); struct vsbus_softc { struct device sc_dev; volatile struct vs_cpu *sc_cpu; u_char sc_mask; /* Interrupts to enable after autoconf */ }; struct cfattach vsbus_ca = { sizeof(struct vsbus_softc), vsbus_match, vsbus_attach }; int vsbus_print(aux, name) void *aux; const char *name; { struct vsbus_attach_args *va = aux; printf(" csr 0x%lx vec %o ipl %x maskbit %x", va->va_paddr, va->va_cvec & 511, va->va_br, va->va_maskno - 1); return(UNCONF); } int vsbus_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct bp_conf *bp = aux; if (strcmp(bp->type, "vsbus")) return 0; /* * on machines which can have it, the vsbus is always there */ if ((vax_bustype & VAX_VSBUS) == 0) return (0); return (1); } void vsbus_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct vsbus_softc *sc = (void *)self; printf("\n"); sc->sc_cpu = (void *)vax_map_physmem(VS_REGS, 1); /* * First: find which interrupts we won't care about. * There are interrupts that interrupt on a periodic basic * that we don't want to interfere with the rest of the * interrupt probing. */ sc->sc_cpu->vc_intmsk = 0; sc->sc_cpu->vc_intclr = 0xff; DELAY(1000000); /* Wait a second */ sc->sc_mask = sc->sc_cpu->vc_intreq; printf("%s: interrupt mask %x\n", self->dv_xname, sc->sc_mask); /* * now check for all possible devices on this "bus" */ config_search(vsbus_search, self, NULL); /* Autoconfig finished, enable interrupts */ sc->sc_cpu->vc_intmsk = ~sc->sc_mask; } int vsbus_search(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct vsbus_softc *sc = (void *)parent; struct vsbus_attach_args va; int i, vec, br; u_char c; va.va_paddr = cf->cf_loc[0]; va.va_addr = vax_map_physmem(va.va_paddr, 1); sc->sc_cpu->vc_intmsk = 0; sc->sc_cpu->vc_intclr = 0xff; scb_vecref(0, 0); /* Clear vector ref */ i = (*cf->cf_attach->ca_match) (parent, cf, &va); vax_unmap_physmem(va.va_addr, 1); c = sc->sc_cpu->vc_intreq & ~sc->sc_mask; if (i > 10) c = sc->sc_mask; /* Fooling interrupt */ if (c == 0 || i == 0) goto forgetit; sc->sc_cpu->vc_intmsk = c; DELAY(100); sc->sc_cpu->vc_intmsk = 0; va.va_maskno = ffs((u_int)c); i = scb_vecref(&vec, &br); if (i == 0) goto fail; if (vec == 0) goto fail; scb_vecalloc(vec, va.va_ivec, cf->cf_unit, SCB_ISTACK); va.va_br = br; va.va_cvec = vec; config_attach(parent, cf, &va, vsbus_print); return 0; fail: printf("%s%d at %s csr %x %s\n", cf->cf_driver->cd_name, cf->cf_unit, parent->dv_xname, cf->cf_loc[0], (i ? "zero vector" : "didn't interrupt")); forgetit: return 0; } /* * Sets a new interrupt mask. Returns the old one. * Works like spl functions. */ unsigned char vsbus_setmask(mask) unsigned char mask; { struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; unsigned char ch; ch = sc->sc_cpu->vc_intmsk; sc->sc_cpu->vc_intmsk = mask; return ch; } /* * Clears the interrupts in mask. */ void vsbus_clrintr(mask) unsigned char mask; { struct vsbus_softc *sc = vsbus_cd.cd_devs[0]; sc->sc_cpu->vc_intclr = mask; } #ifdef notyet /* * Allocate/free DMA pages and other bus resources. * VS2000: All DMA and register access must be exclusive. * VS3100: DMA area may be accessed by anyone anytime. * MFM/SCSI: Don't touch reg's while DMA is active. * SCSI/SCSI: Legal to touch any register anytime. */ #endif