1 /* $NetBSD: memc_3min.c,v 1.15 2019/08/21 04:17:41 msaitoh Exp $ */
2
3 /*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: trap.c 1.32 91/04/06
37 *
38 * @(#)trap.c 8.5 (Berkeley) 1/11/94
39 */
40
41 #include <sys/cdefs.h>
42 __KERNEL_RCSID(0, "$NetBSD: memc_3min.c,v 1.15 2019/08/21 04:17:41 msaitoh Exp $");
43
44 /*
45 * Motherboard memory error controller used in both
46 * 3min (kn02ba) and maxine (kn02ca).
47 */
48
49 #include <sys/types.h>
50 #include <sys/systm.h>
51
52 #include <mips/cpuregs.h>
53
54 #include <pmax/pmax/kmin.h>
55 #include <pmax/pmax/memc.h>
56
57 /*
58 * Handle error
59 * All we can do with parity is panic.
60 * XXX check for clean user pages, replace frame, and reload ?
61 */
62 void
kn02ba_errintr(void)63 kn02ba_errintr(void)
64 {
65 paddr_t err, adr;
66 size_t siz;
67 uint32_t mer;
68 static unsigned int errintr_cnt = 0;
69
70 siz = *(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(KMIN_REG_MSR);
71 mer = *(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(KMIN_REG_MER);
72 adr = *(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(KMIN_REG_AER);
73
74 /* clear interrupt bit */
75 *(volatile uint32_t *)MIPS_PHYS_TO_KSEG1(KMIN_REG_TIMEOUT) = 0;
76
77 err = 0; /* XXX gcc */
78 switch (mer & KMIN_MER_LASTBYTE) {
79 case KMIN_LASTB31:
80 err = 3; break;
81 case KMIN_LASTB23:
82 err = 2; break;
83 case KMIN_LASTB15:
84 err = 1; break;
85 case KMIN_LASTB07:
86 err = 0; break;
87 }
88 err |= (adr & KMIN_AER_ADDR_MASK);
89
90 errintr_cnt++;
91 printf("(%u)Bad memory chip at phys %#"PRIxPADDR
92 " [%x %zx %#"PRIxPADDR"]\n",
93 errintr_cnt, err, mer, siz, adr);
94 }
95