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 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * The CPU module for the AMD Athlon64 and Opteron processors 29 */ 30 31 #include <sys/types.h> 32 #include <sys/cmn_err.h> 33 #include <sys/sunddi.h> 34 #include <sys/cpu_module.h> 35 #include <sys/cpu_module_ms_impl.h> 36 #include <sys/cpuvar.h> 37 #include <sys/x86_archext.h> 38 #include <sys/kmem.h> 39 #include <sys/pghw.h> 40 #include <sys/modctl.h> 41 #include <sys/mc.h> 42 #include <sys/mca_x86.h> 43 44 #include "ao.h" 45 46 int ao_ms_support_disable = 0; 47 48 static struct ao_chipshared *ao_shared[AO_MAX_CHIPS]; 49 50 /* 51 * This cpu module supports AMD family 0xf revisions B/C/D/E/F/G. If 52 * a family 0xf cpu beyond the rev G model limit is detected then 53 * return ENOTSUP and let the generic x86 CPU module load instead. 54 */ 55 uint_t ao_model_limit = 0x6f; 56 57 int 58 ao_ms_init(cmi_hdl_t hdl, void **datap) 59 { 60 uint_t chipid = cmi_hdl_chipid(hdl); 61 struct ao_chipshared *sp, *osp; 62 ao_ms_data_t *ao; 63 uint64_t cap; 64 65 if (ao_ms_support_disable || cmi_hdl_model(hdl) >= ao_model_limit) 66 return (ENOTSUP); 67 68 if (!(x86_feature & X86_MCA)) 69 return (ENOTSUP); 70 71 if (cmi_hdl_rdmsr(hdl, IA32_MSR_MCG_CAP, &cap) != CMI_SUCCESS) 72 return (ENOTSUP); 73 74 if (!(cap & MCG_CAP_CTL_P)) 75 return (ENOTSUP); 76 77 if ((cap & MCG_CAP_COUNT_MASK) != AMD_MCA_BANK_COUNT) { 78 cmn_err(CE_WARN, "Chip %d core %d has %llu MCA banks, " 79 "expected %u: disabling AMD-specific MCA support on " 80 "this CPU", chipid, cmi_hdl_coreid(hdl), 81 (u_longlong_t)cap & MCG_CAP_COUNT_MASK, 82 AMD_MCA_BANK_COUNT); 83 return (ENOTSUP); 84 } 85 86 ao = *datap = kmem_zalloc(sizeof (ao_ms_data_t), KM_SLEEP); 87 cmi_hdl_hold(hdl); /* release in fini */ 88 ao->ao_ms_hdl = hdl; 89 90 /* 91 * Allocate the chipshared structure if it appears not to have been 92 * allocated already (by a sibling core). Install the newly 93 * allocated pointer atomically in case a sibling core beats 94 * us to it. 95 */ 96 if ((sp = ao_shared[chipid]) == NULL) { 97 sp = kmem_zalloc(sizeof (struct ao_chipshared), KM_SLEEP); 98 sp->aos_chiprev = cmi_hdl_chiprev(hdl); 99 membar_producer(); 100 101 osp = atomic_cas_ptr(&ao_shared[chipid], NULL, sp); 102 if (osp != NULL) { 103 kmem_free(sp, sizeof (struct ao_chipshared)); 104 sp = osp; 105 } 106 } 107 ao->ao_ms_shared = sp; 108 109 return (0); 110 } 111 112 /*ARGSUSED*/ 113 void 114 ao_ms_post_mpstartup(cmi_hdl_t hdl) 115 { 116 (void) ddi_install_driver("mc-amd"); 117 } 118 119 cms_api_ver_t _cms_api_version = CMS_API_VERSION_1; 120 121 const cms_ops_t _cms_ops = { 122 ao_ms_init, /* cms_init */ 123 ao_ms_post_startup, /* cms_post_startup */ 124 ao_ms_post_mpstartup, /* cms_post_mpstartup */ 125 NULL, /* cms_logout_size */ 126 ao_ms_mcgctl_val, /* cms_mcgctl_val */ 127 ao_ms_bankctl_skipinit, /* cms_bankctl_skipinit */ 128 ao_ms_bankctl_val, /* cms_bankctl_val */ 129 NULL, /* cms_bankstatus_skipinit */ 130 NULL, /* cms_bankstatus_val */ 131 ao_ms_mca_init, /* cms_mca_init */ 132 ao_ms_poll_ownermask, /* cms_poll_ownermask */ 133 NULL, /* cms_bank_logout */ 134 ao_ms_error_action, /* cms_error_action */ 135 ao_ms_disp_match, /* cms_disp_match */ 136 ao_ms_ereport_class, /* cms_ereport_class */ 137 NULL, /* cms_ereport_detector */ 138 ao_ms_ereport_includestack, /* cms_ereport_includestack */ 139 ao_ms_ereport_add_logout, /* cms_ereport_add_logout */ 140 ao_ms_msrinject, /* cms_msrinject */ 141 NULL, /* cms_fini */ 142 }; 143 144 static struct modlcpu modlcpu = { 145 &mod_cpuops, 146 "AMD Athlon64/Opteron Model-Specific Support" 147 }; 148 149 static struct modlinkage modlinkage = { 150 MODREV_1, 151 (void *)&modlcpu, 152 NULL 153 }; 154 155 int 156 _init(void) 157 { 158 return (mod_install(&modlinkage)); 159 } 160 161 int 162 _info(struct modinfo *modinfop) 163 { 164 return (mod_info(&modlinkage, modinfop)); 165 } 166 167 int 168 _fini(void) 169 { 170 return (mod_remove(&modlinkage)); 171 } 172