1 /* $NetBSD: memc_3max.c,v 1.17 2011/07/09 17:32:31 matt Exp $ */
2
3 /*
4 * Copyright (c) 1998 Jonathan Stone. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Jonathan Stone for
17 * the NetBSD Project.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
34
35 __KERNEL_RCSID(0, "$NetBSD: memc_3max.c,v 1.17 2011/07/09 17:32:31 matt Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39
40 #include <mips/locore.h> /* wbflush() */
41
42 #include <pmax/pmax/kn02.h> /* error-register defs copied into kn03.h */
43 #include <pmax/pmax/memc.h>
44
45 /*
46 * the 3max and 3maxplus have compatible memory subsystems;
47 * we handle them both here.
48 */
49
50
51 void
dec_mtasic_err(uint32_t erradr,vaddr_t errsyn,uint32_t bnk32m)52 dec_mtasic_err(uint32_t erradr, vaddr_t errsyn, uint32_t bnk32m)
53 {
54 uint32_t physadr;
55 int module;
56
57 if (!(erradr & KN02_ERR_VALID))
58 return;
59 /* extract the physical word address and compensate for pipelining */
60 physadr = erradr & KN02_ERR_ADDRESS;
61 if (!(erradr & KN02_ERR_WRITE))
62 physadr = (physadr & ~0xfff) | ((physadr & 0xfff) - 5);
63 physadr <<= 2;
64 printf("%s memory %s %s error at 0x%08x",
65 (erradr & KN02_ERR_CPU) ? "CPU" : "DMA",
66 (erradr & KN02_ERR_WRITE) ? "write" : "read",
67 (erradr & KN02_ERR_ECCERR) ? "ECC" : "timeout",
68 physadr);
69 if (physadr <= ctob(physmem)) {
70 if (bnk32m != 0) /* 32MB modules? */
71 module = physadr / ( 32 * 1024 * 1024);
72 else
73 module = physadr / ( 8 * 1024 * 1024);
74 printf(" module %d", module);
75 }
76 else {
77 /* ECC error didn't occur in RAM */
78 printf(" (no RAM)");
79 }
80 printf("\n");
81 if (erradr & KN02_ERR_ECCERR) {
82 uint32_t errsyn_value = *(uint32_t *)errsyn;
83 *(uint32_t *)errsyn = 0;
84 wbflush();
85 printf(" ECC 0x%08x\n", errsyn_value);
86
87 /* check for a corrected, single bit, read error */
88 if (!(erradr & KN02_ERR_WRITE)) {
89 if (physadr & 0x4) {
90 /* check high word */
91 if (errsyn_value & KN02_ECC_SNGHI)
92 return;
93 } else {
94 /* check low word */
95 if (errsyn_value & KN02_ECC_SNGLO)
96 return;
97 }
98 }
99 printf("\n");
100 }
101 else
102 printf("\n");
103 panic("Mem error interrupt");
104 }
105
106 /*
107 * Xxx noncontig memory probing with mixed-sized memory boards
108 * XXX on 3max (kn02) or 3maxplus (kn03) belongs here.
109 */
110
111 /*
112 * Xxx any support for NVRAM (PrestoServe) modules in
113 * XXX on 3max (kn02) or 3maxplus (kn03) memory slots probably belongs here,
114 * since we need to not probe it as normal RAM.
115 */
116