Moved from dec_kn02_subr.c

1999-05-20 14:15:57 +00:00 · 1999-05-20 14:15:57 +00:00 · c0c79283f3
commit c0c79283f3
parent a5b668be64
1 changed files with 111 additions and 0 deletions
--- a/sys/arch/pmax/pmax/memc_3min.c
+++ b/sys/arch/pmax/pmax/memc_3min.c
@ -0,0 +1,111 @@
+/*	$NetBSD: memc_3min.c,v 1.4 1999/05/20 14:15:57 nisimura Exp $	*/
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department and Ralph Campbell.
+ *
+ * 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.
+ *
+ * from: Utah Hdr: trap.c 1.32 91/04/06
+ *
+ *	@(#)trap.c	8.5 (Berkeley) 1/11/94
+ */
+
+
+#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
+
+__KERNEL_RCSID(0, "$NetBSD: memc_3min.c,v 1.4 1999/05/20 14:15:57 nisimura Exp $");
+
+/*
+ * Motherboard memory error contoller used in both
+ * 3min (kn02ba) and maxine (kn02ca).
+ */
+
+#include <sys/types.h>
+#include <sys/systm.h>
+
+#include <mips/cpuregs.h>
+
+#include <pmax/pmax/kmin.h>
+#include <pmax/pmax/dec_kn02_subr.h>
+
+
+/* forward declarations */
+static unsigned kn02ba_recover_erradr __P((u_int phys, u_int mer));
+
+
+static unsigned
+kn02ba_recover_erradr(phys, mer)
+	unsigned phys, mer;
+{
+	/* phys holds bits 28:2, mer knows which byte */
+	switch (mer & KMIN_MER_LASTBYTE) {
+	case KMIN_LASTB31:
+		mer = 3; break;
+	case KMIN_LASTB23:
+		mer = 2; break;
+	case KMIN_LASTB15:
+		mer = 1; break;
+	case KMIN_LASTB07:
+		mer = 0; break;
+	}
+	return ((phys & KMIN_AER_ADDR_MASK) | mer);
+}
+
+
+
+/*
+ * Handle error
+ * All we can do with parity is panic.
+ * XXX check for clean user pages, replace frame,  and reload ?
+ */
+void
+kn02ba_errintr()
+{
+	int mer, adr, siz;
+	static int errintr_cnt = 0;
+
+	siz = *(volatile int *)MIPS_PHYS_TO_KSEG1(KMIN_REG_MSR);
+	mer = *(volatile int *)MIPS_PHYS_TO_KSEG1(KMIN_REG_MER);
+	adr = *(volatile int *)MIPS_PHYS_TO_KSEG1(KMIN_REG_AER);
+
+	/* clear interrupt bit */
+	*(unsigned int *)MIPS_PHYS_TO_KSEG1(KMIN_REG_TIMEOUT) = 0;
+
+	errintr_cnt++;
+	printf("(%d)%s%x [%x %x %x]\n", errintr_cnt,
+	       "Bad memory chip at phys ",
+	       kn02ba_recover_erradr(adr, mer),
+	       mer, siz, adr);
+}