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 2008 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 /* 30 * The CPU module for the AMD Athlon64 and Opteron processors 31 */ 32 33 #include <sys/types.h> 34 #include <sys/cmn_err.h> 35 #include <sys/sunddi.h> 36 #include <sys/cpu_module.h> 37 #include <sys/cpu_module_ms_impl.h> 38 #include <sys/cpuvar.h> 39 #include <sys/x86_archext.h> 40 #include <sys/kmem.h> 41 #include <sys/pghw.h> 42 #include <sys/modctl.h> 43 #include <sys/mc.h> 44 #include <sys/mca_x86.h> 45 46 #include "ao.h" 47 48 int ao_ms_support_disable = 0; 49 50 static struct ao_chipshared *ao_shared[AO_MAX_CHIPS]; 51 52 /* 53 * This cpu module supports AMD family 0xf revisions B/C/D/E/F/G. If 54 * a family 0xf cpu beyond the rev G model limit is detected then 55 * return ENOTSUP and let the generic x86 CPU module load instead. 56 */ 57 uint_t ao_model_limit = 0x6f; 58 59 int 60 ao_ms_init(cmi_hdl_t hdl, void **datap) 61 { 62 uint_t chipid = cmi_hdl_chipid(hdl); 63 struct ao_chipshared *sp, *osp; 64 ao_ms_data_t *ao; 65 uint64_t cap; 66 67 if (ao_ms_support_disable || cmi_hdl_model(hdl) >= ao_model_limit) 68 return (ENOTSUP); 69 70 if (!(x86_feature & X86_MCA)) 71 return (ENOTSUP); 72 73 if (cmi_hdl_rdmsr(hdl, IA32_MSR_MCG_CAP, &cap) != CMI_SUCCESS) 74 return (ENOTSUP); 75 76 if (!(cap & MCG_CAP_CTL_P)) 77 return (ENOTSUP); 78 79 if ((cap & MCG_CAP_COUNT_MASK) != AMD_MCA_BANK_COUNT) { 80 cmn_err(CE_WARN, "Chip %d core %d has %llu MCA banks, " 81 "expected %u: disabling AMD-specific MCA support on " 82 "this CPU", chipid, cmi_hdl_coreid(hdl), 83 (u_longlong_t)cap & MCG_CAP_COUNT_MASK, 84 AMD_MCA_BANK_COUNT); 85 return (ENOTSUP); 86 } 87 88 ao = *datap = kmem_zalloc(sizeof (ao_ms_data_t), KM_SLEEP); 89 cmi_hdl_hold(hdl); /* release in fini */ 90 ao->ao_ms_hdl = hdl; 91 92 /* 93 * Allocate the chipshared structure if it appears not to have been 94 * allocated already (by a sibling core). Install the newly 95 * allocated pointer atomically in case a sibling core beats 96 * us to it. 97 */ 98 if ((sp = ao_shared[chipid]) == NULL) { 99 sp = kmem_zalloc(sizeof (struct ao_chipshared), KM_SLEEP); 100 sp->aos_chiprev = cmi_hdl_chiprev(hdl); 101 membar_producer(); 102 103 osp = atomic_cas_ptr(&ao_shared[chipid], NULL, sp); 104 if (osp != NULL) { 105 kmem_free(sp, sizeof (struct ao_chipshared)); 106 sp = osp; 107 } 108 } 109 ao->ao_ms_shared = sp; 110 111 return (0); 112 } 113 114 /*ARGSUSED*/ 115 void 116 ao_ms_post_mpstartup(cmi_hdl_t hdl) 117 { 118 (void) ddi_install_driver("mc-amd"); 119 } 120 121 cms_api_ver_t _cms_api_version = CMS_API_VERSION_0; 122 123 const cms_ops_t _cms_ops = { 124 ao_ms_init, /* cms_init */ 125 ao_ms_post_startup, /* cms_post_startup */ 126 ao_ms_post_mpstartup, /* cms_post_mpstartup */ 127 NULL, /* cms_logout_size */ 128 ao_ms_mcgctl_val, /* cms_mcgctl_val */ 129 ao_ms_bankctl_skipinit, /* cms_bankctl_skipinit */ 130 ao_ms_bankctl_val, /* cms_bankctl_val */ 131 NULL, /* cms_bankstatus_skipinit */ 132 NULL, /* cms_bankstatus_val */ 133 ao_ms_mca_init, /* cms_mca_init */ 134 ao_ms_poll_ownermask, /* cms_poll_ownermask */ 135 NULL, /* cms_bank_logout */ 136 ao_ms_error_action, /* cms_error_action */ 137 ao_ms_disp_match, /* cms_disp_match */ 138 ao_ms_ereport_class, /* cms_ereport_class */ 139 NULL, /* cms_ereport_detector */ 140 ao_ms_ereport_includestack, /* cms_ereport_includestack */ 141 ao_ms_ereport_add_logout, /* cms_ereport_add_logout */ 142 ao_ms_msrinject, /* cms_msrinject */ 143 NULL, /* cms_fini */ 144 }; 145 146 static struct modlcpu modlcpu = { 147 &mod_cpuops, 148 "AMD Athlon64/Opteron Model-Specific Support" 149 }; 150 151 static struct modlinkage modlinkage = { 152 MODREV_1, 153 (void *)&modlcpu, 154 NULL 155 }; 156 157 int 158 _init(void) 159 { 160 return (mod_install(&modlinkage)); 161 } 162 163 int 164 _info(struct modinfo *modinfop) 165 { 166 return (mod_info(&modlinkage, modinfop)); 167 } 168 169 int 170 _fini(void) 171 { 172 return (mod_remove(&modlinkage)); 173 } 174