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
45int ao_ms_support_disable = 0;
46
47static 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 */
54uint_t ao_model_limit = 0x6f;
55
56int
57ao_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*/
112void
113ao_ms_post_mpstartup(cmi_hdl_t hdl)
114{
115	(void) ddi_install_driver("mc-amd");
116}
117
118cms_api_ver_t _cms_api_version = CMS_API_VERSION_2;
119
120const 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
143static struct modlcpu modlcpu = {
144	&mod_cpuops,
145	"AMD Athlon64/Opteron Model-Specific Support"
146};
147
148static struct modlinkage modlinkage = {
149	MODREV_1,
150	(void *)&modlcpu,
151	NULL
152};
153
154int
155_init(void)
156{
157	return (mod_install(&modlinkage));
158}
159
160int
161_info(struct modinfo *modinfop)
162{
163	return (mod_info(&modlinkage, modinfop));
164}
165
166int
167_fini(void)
168{
169	return (mod_remove(&modlinkage));
170}
171