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 2007 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_impl.h> 37 #include <sys/cpuvar.h> 38 #include <sys/x86_archext.h> 39 #include <sys/kmem.h> 40 #include <sys/pghw.h> 41 #include <sys/modctl.h> 42 #include <sys/mc.h> 43 #include <sys/mca_x86.h> 44 45 #include "ao.h" 46 47 static struct ao_chipshared *ao_shared[NCPU]; 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 static int 57 ao_init(cpu_t *cp, void **datap) 58 { 59 uint_t chipid = pg_plat_hw_instance_id(CPU, PGHW_CHIP); 60 struct ao_chipshared *sp, *osp; 61 ao_data_t *ao; 62 uint64_t cap; 63 64 if (cpuid_getmodel(cp) >= ao_model_limit) 65 return (ENOTSUP); 66 67 if (!(x86_feature & X86_MCA)) 68 return (ENOTSUP); 69 70 cap = rdmsr(IA32_MSR_MCG_CAP); 71 if (!(cap & MCG_CAP_CTL_P)) 72 return (ENOTSUP); 73 74 ao = *datap = kmem_zalloc(sizeof (ao_data_t), KM_SLEEP); 75 ao->ao_cpu = cp; 76 77 /* 78 * Allocate the chipshared structure if it appears not to have been 79 * allocated already (by a sibling core). Install the newly 80 * allocated pointer atomically in case a sibling core beats 81 * us to it. 82 */ 83 if ((sp = ao_shared[chipid]) == NULL) { 84 sp = kmem_zalloc(sizeof (struct ao_chipshared), KM_SLEEP); 85 osp = atomic_cas_ptr(&ao_shared[chipid], NULL, sp); 86 if (osp != NULL) { 87 kmem_free(sp, sizeof (struct ao_chipshared)); 88 sp = osp; 89 } 90 } 91 ao->ao_shared = sp; 92 93 return (0); 94 } 95 96 /*ARGSUSED*/ 97 static void 98 ao_post_mpstartup(void *data) 99 { 100 (void) ddi_install_driver("mc-amd"); 101 } 102 103 static void 104 ao_fini(void *data) 105 { 106 kmem_free(data, sizeof (ao_data_t)); 107 } 108 109 const cmi_ops_t _cmi_ops = { 110 ao_init, 111 ao_mca_post_init, 112 ao_post_mpstartup, 113 ao_fini, 114 ao_faulted_enter, 115 ao_faulted_exit, 116 ao_scrubber_enable, 117 ao_mca_init, 118 ao_mca_trap, 119 ao_mca_inject, 120 ao_mca_poke, 121 ao_mc_register, 122 ao_mc_getops 123 }; 124 125 static struct modlcpu modlcpu = { 126 &mod_cpuops, 127 "AMD Athlon64/Opteron CPU Module" 128 }; 129 130 static struct modlinkage modlinkage = { 131 MODREV_1, 132 (void *)&modlcpu, 133 NULL 134 }; 135 136 int 137 _init(void) 138 { 139 int err; 140 141 ao_mca_queue = errorq_create("ao_mca_queue", 142 ao_mca_drain, NULL, AO_MCA_MAX_ERRORS * (max_ncpus + 1), 143 sizeof (ao_cpu_logout_t), 1, ERRORQ_VITAL); 144 145 if (ao_mca_queue == NULL) 146 return (EAGAIN); /* errorq_create() logs a message for us */ 147 148 if ((err = mod_install(&modlinkage)) != 0) { 149 errorq_destroy(ao_mca_queue); 150 ao_mca_queue = NULL; 151 } 152 153 return (err); 154 } 155 156 int 157 _info(struct modinfo *modinfop) 158 { 159 return (mod_info(&modlinkage, modinfop)); 160 } 161 162 int 163 _fini(void) 164 { 165 int err; 166 167 if ((err = mod_remove(&modlinkage)) == 0) 168 errorq_destroy(ao_mca_queue); 169 170 return (err); 171 } 172