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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 /*
27 * The CPU module for the AMD Athlon64 and Opteron processors
28 */
29
30 #include <sys/types.h>
31 #include <sys/cmn_err.h>
32 #include <sys/sunddi.h>
33 #include <sys/cpu_module.h>
34 #include <sys/cpu_module_ms_impl.h>
35 #include <sys/cpuvar.h>
36 #include <sys/x86_archext.h>
37 #include <sys/kmem.h>
38 #include <sys/pghw.h>
39 #include <sys/modctl.h>
40 #include <sys/mc.h>
41 #include <sys/mca_x86.h>
42
43 #include "ao.h"
44
45 int ao_ms_support_disable = 0;
46
47 static struct ao_chipshared *ao_shared[AO_MAX_CHIPS];
48
49 /*
50 * This cpu module supports AMD family 0xf revisions B/C/D/E/F/G. If
51 * a family 0xf cpu beyond the rev G model limit is detected then
52 * return ENOTSUP and let the generic x86 CPU module load instead.
53 */
54 uint_t ao_model_limit = 0x6f;
55
56 int
57 ao_ms_init(cmi_hdl_t hdl, void **datap)
58 {
59 uint_t chipid = cmi_hdl_chipid(hdl);
60 struct ao_chipshared *sp, *osp;
61 ao_ms_data_t *ao;
62 uint64_t cap;
63
64 if (ao_ms_support_disable || cmi_hdl_model(hdl) >= ao_model_limit)
65 return (ENOTSUP);
66
67 if (!is_x86_feature(x86_featureset, X86FSET_MCA))
68 return (ENOTSUP);
69
70 if (cmi_hdl_rdmsr(hdl, IA32_MSR_MCG_CAP, &cap) != CMI_SUCCESS)
71 return (ENOTSUP);
72
73 if (!(cap & MCG_CAP_CTL_P))
74 return (ENOTSUP);
75
76 if ((cap & MCG_CAP_COUNT_MASK) != AMD_MCA_BANK_COUNT) {
77 cmn_err(CE_WARN, "Chip %d core %d has %llu MCA banks, "
78 "expected %u: disabling AMD-specific MCA support on "
79 "this CPU", chipid, cmi_hdl_coreid(hdl),
80 (u_longlong_t)cap & MCG_CAP_COUNT_MASK,
81 AMD_MCA_BANK_COUNT);
82 return (ENOTSUP);
83 }
84
85 ao = *datap = kmem_zalloc(sizeof (ao_ms_data_t), KM_SLEEP);
86 cmi_hdl_hold(hdl); /* release in fini */
87 ao->ao_ms_hdl = hdl;
88
89 /*
90 * Allocate the chipshared structure if it appears not to have been
91 * allocated already (by a sibling core). Install the newly
92 * allocated pointer atomically in case a sibling core beats
93 * us to it.
94 */
95 if ((sp = ao_shared[chipid]) == NULL) {
96 sp = kmem_zalloc(sizeof (struct ao_chipshared), KM_SLEEP);
97 sp->aos_chiprev = cmi_hdl_chiprev(hdl);
98 membar_producer();
99
100 osp = atomic_cas_ptr(&ao_shared[chipid], NULL, sp);
101 if (osp != NULL) {
102 kmem_free(sp, sizeof (struct ao_chipshared));
103 sp = osp;
104 }
105 }
106 ao->ao_ms_shared = sp;
107
108 return (0);
109 }
110
111 /*ARGSUSED*/
112 void
113 ao_ms_post_mpstartup(cmi_hdl_t hdl)
114 {
115 (void) ddi_install_driver("mc-amd");
116 }
117
118 cms_api_ver_t _cms_api_version = CMS_API_VERSION_2;
119
120 const cms_ops_t _cms_ops = {
121 ao_ms_init, /* cms_init */
122 ao_ms_post_startup, /* cms_post_startup */
123 ao_ms_post_mpstartup, /* cms_post_mpstartup */
124 NULL, /* cms_logout_size */
125 ao_ms_mcgctl_val, /* cms_mcgctl_val */
126 ao_ms_bankctl_skipinit, /* cms_bankctl_skipinit */
127 ao_ms_bankctl_val, /* cms_bankctl_val */
128 NULL, /* cms_bankstatus_skipinit */
129 NULL, /* cms_bankstatus_val */
130 ao_ms_mca_init, /* cms_mca_init */
131 ao_ms_poll_ownermask, /* cms_poll_ownermask */
132 NULL, /* cms_bank_logout */
133 ao_ms_error_action, /* cms_error_action */
134 ao_ms_disp_match, /* cms_disp_match */
135 ao_ms_ereport_class, /* cms_ereport_class */
136 NULL, /* cms_ereport_detector */
137 ao_ms_ereport_includestack, /* cms_ereport_includestack */
138 ao_ms_ereport_add_logout, /* cms_ereport_add_logout */
139 ao_ms_msrinject, /* cms_msrinject */
140 NULL, /* cms_fini */
141 };
142
143 static struct modlcpu modlcpu = {
144 &mod_cpuops,
145 "AMD Athlon64/Opteron Model-Specific Support"
146 };
147
148 static struct modlinkage modlinkage = {
149 MODREV_1,
150 { (void *)&modlcpu, NULL }
151 };
152
153 int
154 _init(void)
155 {
156 return (mod_install(&modlinkage));
157 }
158
159 int
160 _info(struct modinfo *modinfop)
161 {
162 return (mod_info(&modlinkage, modinfop));
163 }
164
165 int
166 _fini(void)
167 {
168 return (mod_remove(&modlinkage));
169 }