1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <stdarg.h>
30#include <sys/param.h>
31#include <errno.h>
32#include <string.h>
33#include <unistd.h>
34#include <strings.h>
35#include <kstat.h>
36#include <fm/fmd_api.h>
37#include <sys/fm/protocol.h>
38#include <sys/async.h>
39
40#define	IOD_STAT_BUMP(name)		iod.iod_stats->name.fmds_value.ui64++
41
42/*
43 * USII-io-diagnosis:
44 *
45 * This diagnosis engine consumes the Psycho based IO UEs and CEs
46 * which are generated due to DMA Reads or Writes.
47 *
48 * When a UE is received it will generate the appropriate fault
49 * (defect.ultraSPARC-II.memory.nodiag). This is because we do not plan
50 * to currently add greater diagnosis capabilities for USII systems.
51 *
52 * When a CE is received we allow the legacy in kernel SERD do it's job
53 * and we just bump a counter here. The legacy SERD algorithm will print
54 * out a message and retire pages when the SERD threshold is reached.
55 *
56 */
57static void iod_recv(fmd_hdl_t *, fmd_event_t *, nvlist_t *, const char *);
58
59typedef struct iod_stat {
60	fmd_stat_t ue;	/* # of UEs received */
61	fmd_stat_t ce;	/* # of CEs received */
62} iod_stat_t;
63
64typedef struct iod {
65	iod_stat_t *iod_stats;	/* Module statistics */
66} iod_t;
67
68static const fmd_hdl_ops_t fmd_ops = {
69	iod_recv,	/* fmdo_recv */
70	NULL,		/* fmdo_timeout */
71	NULL,		/* fmdo_close */
72	NULL,		/* fmdo_stats */
73	NULL		/* fmdo_gc */
74};
75
76static const fmd_hdl_info_t fmd_info = {
77	"UltraSPARC-II I/O Diagnosis", IOD_VERSION, &fmd_ops, NULL
78};
79
80static const iod_stat_t iod_stat = {
81	{ "ue", FMD_TYPE_UINT64, "number of received IO UEs" },
82	{ "ce", FMD_TYPE_UINT64, "number of received IO CEs" }
83};
84
85iod_t iod;
86
87/*ARGSUSED*/
88static void
89iod_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
90{
91	fmd_case_t *cp;
92	nvlist_t *fault;
93	char flt[] = "defect.ultraSPARC-II.memory.nodiag";
94
95	if (fmd_nvl_class_match(hdl, nvl, "*ue")) {
96		IOD_STAT_BUMP(ue);
97		cp = fmd_case_open(hdl, NULL);
98		fault = fmd_nvl_create_fault(hdl, flt, 100, NULL, NULL, NULL);
99		fmd_case_add_ereport(hdl, cp, ep);
100		fmd_case_add_suspect(hdl, cp, fault);
101		fmd_case_solve(hdl, cp);
102	} else if (fmd_nvl_class_match(hdl, nvl, "*ce")) {
103		IOD_STAT_BUMP(ce);
104	}
105}
106
107int
108iod_cpu_check_support(void)
109{
110	kstat_named_t *kn;
111	kstat_ctl_t *kc;
112	kstat_t *ksp;
113	int i;
114
115	if ((kc = kstat_open()) == NULL)
116		return (0);
117
118	for (ksp = kc->kc_chain; ksp != NULL; ksp = ksp->ks_next) {
119		if (strcmp(ksp->ks_module, "cpu_info") != 0)
120			continue;
121
122		if (kstat_read(kc, ksp, NULL) == -1) {
123			(void) kstat_close(kc);
124			return (0);
125		}
126
127		for (kn = ksp->ks_data, i = 0; i < ksp->ks_ndata; i++, kn++) {
128			if (strcmp(kn->name, "implementation") != 0)
129				continue;
130
131			if (strncmp(KSTAT_NAMED_STR_PTR(kn), "UltraSPARC-II",
132			    sizeof ("UltraSPARC-II") - 1) == 0 &&
133			    strncmp(KSTAT_NAMED_STR_PTR(kn), "UltraSPARC-III",
134			    sizeof ("UltraSPARC-III") - 1) != 0) {
135				(void) kstat_close(kc);
136				return (1);
137			}
138		}
139	}
140
141	(void) kstat_close(kc);
142	return (0);
143}
144
145void
146_fmd_init(fmd_hdl_t *hdl)
147{
148	if (fmd_hdl_register(hdl, FMD_API_VERSION, &fmd_info) != 0)
149		return; /* error in configuration file or fmd_info */
150
151	if (!iod_cpu_check_support()) {
152		fmd_hdl_debug(hdl, "no supported CPUs found");
153		fmd_hdl_unregister(hdl);
154		return;
155	}
156
157	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.drue");
158	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.s-drue");
159	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.dwue");
160	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.s-dwue");
161	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.drce");
162	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.s-drce");
163	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.dwce");
164	fmd_hdl_subscribe(hdl, "ereport.io.psy.ecc.s-dwce");
165
166	bzero(&iod, sizeof (iod_t));
167
168	iod.iod_stats = (iod_stat_t *)fmd_stat_create(hdl, FMD_STAT_NOALLOC,
169	    sizeof (iod_stat) / sizeof (fmd_stat_t), (fmd_stat_t *)&iod_stat);
170}
171