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- /*
- * 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");
- }
-