/* * Copyright (c) 1988 Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Chris Torek. * * 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. * * @(#)bi.c 7.4 (Berkeley) 12/16/90 */ /* * VAXBI specific routines. */ #include "sys/param.h" #include "../include/cpu.h" #include "../include/mtpr.h" #include "../vax/nexus.h" #include "bireg.h" bi_reset(bi) register struct biiregs *bi; { bi->bi_csr |= BICSR_NRST; DELAY(10000); /* ??? */ } /* * Reset with self test. Return true iff reset fails. * BEWARE, THIS RESETS THE BI ARBITRATION LEVEL TO ARB_NONE * does self test ever cause a bi bus error? */ bi_selftest(bi) register struct biiregs *bi; { register int timo; bi->bi_csr |= BICSR_ARB_NONE; /* why? */ bi->bi_csr |= BICSR_STS | BICSR_INIT;/* must this be separate? */ DELAY(50); /* why? */ timo = todr() + 1000; while (bi->bi_csr & BICSR_BROKE) { if (todr() > timo) /* reset failed */ return (-1); } return (0); /* reset OK */ } /* * THIS SHOULD PROBABLY WORK MORE LIKE ubaerror() * (but then we would need to be able to reset BI nodes) * (we need a per-BI-device driver structure!) */ bi_buserr(binum) int binum; { register struct bi_node *bi; register int node; extern int bi_nodes; extern int cold; printf("vaxbi%d: bus error\n", binum); bi = (struct bi_node *) &nexus[binum * NNODEBI];/* XXX */ for (node = 0; node < 16; node++, bi++) { if ((bi_nodes & (1 << node)) == 0) /* XXX crude */ continue; printf("node %x: ber=%b\n", node, bi->biic.bi_ber, BIBER_BITS); } panic("bi_buserr"); }