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 (!(x86_feature & X86_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, 151 NULL 152 }; 153 154 int 155 _init(void) 156 { 157 return (mod_install(&modlinkage)); 158 } 159 160 int 161 _info(struct modinfo *modinfop) 162 { 163 return (mod_info(&modlinkage, modinfop)); 164 } 165 166 int 167 _fini(void) 168 { 169 return (mod_remove(&modlinkage)); 170 } 171