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 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * Copyright 2019 Joyent, Inc. 26 * Copyright 2022 Oxide Computer Co. 27 */ 28 29 #ifndef _SYS_CPU_MODULE_H 30 #define _SYS_CPU_MODULE_H 31 32 #include <sys/types.h> 33 #include <sys/cpuvar.h> 34 #include <sys/nvpair.h> 35 #include <sys/mc.h> 36 #include <sys/sunddi.h> 37 #include <sys/x86_archext.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 #ifdef _KERNEL 44 45 #define CMIERR_BASE 0xc000 46 47 typedef enum cmi_errno { 48 CMI_SUCCESS = 0, 49 /* 50 * CPU Module Interface API error return values/ 51 */ 52 CMIERR_UNKNOWN = CMIERR_BASE, /* no specific error reason reported */ 53 CMIERR_API, /* API usage error caught */ 54 CMIERR_NOTSUP, /* Unsupported operation */ 55 CMIERR_HDL_CLASS, /* Inappropriate handle class */ 56 CMIERR_HDL_NOTFOUND, /* Can't find handle for resource */ 57 CMIERR_MSRGPF, /* #GP during cmi_hdl_{wr,rd}msr */ 58 CMIERR_INTERPOSE, /* MSR/PCICFG interposition error */ 59 CMIERR_DEADLOCK, /* Deadlock avoidance */ 60 /* 61 * Memory-controller related errors 62 */ 63 CMIERR_MC_ABSENT, /* No, or not yet registered, MC ops */ 64 CMIERR_MC_NOTSUP, /* Requested functionality unimpld */ 65 CMIERR_MC_NOMEMSCRUB, /* No dram scrubber, or disabled */ 66 CMIERR_MC_SYNDROME, /* Invalid syndrome or syndrome type */ 67 CMIERR_MC_BADSTATE, /* MC driver state is invalid */ 68 CMIERR_MC_NOADDR, /* Address not found */ 69 CMIERR_MC_RSRCNOTPRESENT, /* Resource not present in system */ 70 CMIERR_MC_ADDRBITS, /* Too few valid addr bits */ 71 CMIERR_MC_INVALUNUM, /* Invalid input unum */ 72 CMIERR_MC_PARTIALUNUMTOPA, /* unum to pa reflected physaddr */ 73 CMIERR_MC_NOTDIMMADDR /* Address not backed by DRAM */ 74 } cmi_errno_t; 75 76 /* 77 * All access to cpu information is made via a handle, in order to get 78 * the desired info even when running non-natively. 79 * 80 * A CMI_HDL_NATIVE handle is used when we believe we are running on 81 * bare-metal. If we *are* on bare metal then this handle type will 82 * get us through to the real hardware, and there will be a 1:1 correspondence 83 * between handles and cpu_t structures; if not, say we are a domU to 84 * some unknown/undetected/unannounced hypervisor then chances are the 85 * hypervisor is not exposing much hardware detail to us so we should 86 * be prepared for some operations that "cannot fail" to fail or return 87 * odd data. 88 * 89 * A CMI_HDL_SOLARIS_xVM_MCA handle is used when we are running 90 * in i86xpv architecture - dom0 to a Solaris xVM hypervisor - and want to 91 * use a handle on each real execution core (as opposed to vcpu) 92 * to perform MCA related activities. The model for this handle type 93 * is that the hypervisor continues to own the real hardware and 94 * includes a polling service and #MC handler which forward error 95 * telemetry to dom0 for logging and diagnosis. As such, the operations 96 * such as RDMSR and WRMSR for this handle type do *not* read and write 97 * real MSRs via hypercalls- instead they should provide the values from 98 * already-read MCA bank telemetry, and writes are discarded. 99 * 100 * If some application requires real MSR read and write access another 101 * handle class should be introduced. 102 */ 103 104 typedef struct cmi_hdl *cmi_hdl_t; /* opaque chip/core/strand handle */ 105 106 enum cmi_hdl_class { 107 CMI_HDL_NATIVE, 108 CMI_HDL_SOLARIS_xVM_MCA, 109 CMI_HDL_NEUTRAL 110 }; 111 112 struct regs; 113 114 typedef struct cmi_mc_ops { 115 cmi_errno_t (*cmi_mc_patounum)(void *, uint64_t, uint8_t, uint8_t, 116 uint32_t, int, mc_unum_t *); 117 cmi_errno_t (*cmi_mc_unumtopa)(void *, mc_unum_t *, nvlist_t *, 118 uint64_t *); 119 void (*cmi_mc_logout)(cmi_hdl_t, boolean_t, boolean_t); 120 } cmi_mc_ops_t; 121 122 extern cmi_hdl_t cmi_init(enum cmi_hdl_class, uint_t, uint_t, uint_t); 123 extern void cmi_post_startup(void); 124 extern void cmi_post_mpstartup(void); 125 extern void cmi_fini(cmi_hdl_t); 126 127 extern void cmi_hdl_hold(cmi_hdl_t); 128 extern void cmi_hdl_rele(cmi_hdl_t); 129 extern void *cmi_hdl_getcmidata(cmi_hdl_t); 130 extern void cmi_hdl_setspecific(cmi_hdl_t, void *); 131 extern void *cmi_hdl_getspecific(cmi_hdl_t); 132 extern const struct cmi_mc_ops *cmi_hdl_getmcops(cmi_hdl_t); 133 extern void *cmi_hdl_getmcdata(cmi_hdl_t); 134 extern enum cmi_hdl_class cmi_hdl_class(cmi_hdl_t); 135 136 extern cmi_hdl_t cmi_hdl_lookup(enum cmi_hdl_class, uint_t, uint_t, uint_t); 137 extern cmi_hdl_t cmi_hdl_any(void); 138 139 #define CMI_HDL_WALK_NEXT 0 140 #define CMI_HDL_WALK_DONE 1 141 extern void cmi_hdl_walk(int (*)(cmi_hdl_t, void *, void *, void *), 142 void *, void *, void *); 143 144 extern void cmi_hdlconf_rdmsr_nohw(cmi_hdl_t); 145 extern void cmi_hdlconf_wrmsr_nohw(cmi_hdl_t); 146 extern cmi_errno_t cmi_hdl_rdmsr(cmi_hdl_t, uint_t, uint64_t *); 147 extern cmi_errno_t cmi_hdl_wrmsr(cmi_hdl_t, uint_t, uint64_t); 148 149 extern void cmi_hdl_enable_mce(cmi_hdl_t); 150 extern uint_t cmi_hdl_vendor(cmi_hdl_t); 151 extern const char *cmi_hdl_vendorstr(cmi_hdl_t); 152 extern uint_t cmi_hdl_family(cmi_hdl_t); 153 extern uint_t cmi_hdl_model(cmi_hdl_t); 154 extern uint_t cmi_hdl_stepping(cmi_hdl_t); 155 extern uint_t cmi_hdl_chipid(cmi_hdl_t); 156 extern uint_t cmi_hdl_procnodeid(cmi_hdl_t); 157 extern uint_t cmi_hdl_coreid(cmi_hdl_t); 158 extern uint_t cmi_hdl_strandid(cmi_hdl_t); 159 extern uint_t cmi_hdl_strand_apicid(cmi_hdl_t); 160 extern uint_t cmi_hdl_procnodes_per_pkg(cmi_hdl_t); 161 extern boolean_t cmi_hdl_is_cmt(cmi_hdl_t); 162 extern x86_chiprev_t cmi_hdl_chiprev(cmi_hdl_t); 163 extern const char *cmi_hdl_chiprevstr(cmi_hdl_t); 164 extern uint32_t cmi_hdl_getsockettype(cmi_hdl_t); 165 extern const char *cmi_hdl_getsocketstr(cmi_hdl_t); 166 extern id_t cmi_hdl_logical_id(cmi_hdl_t); 167 extern uint16_t cmi_hdl_smbiosid(cmi_hdl_t); 168 extern uint_t cmi_hdl_smb_chipid(cmi_hdl_t); 169 extern nvlist_t *cmi_hdl_smb_bboard(cmi_hdl_t); 170 extern uint_t cmi_hdl_chipsig(cmi_hdl_t); 171 extern const char *cmi_hdl_chipident(cmi_hdl_t); 172 173 extern int cmi_hdl_online(cmi_hdl_t, int, int *); 174 175 #ifndef __xpv 176 extern uint_t cmi_ntv_hwchipid(cpu_t *); 177 extern uint_t cmi_ntv_hwprocnodeid(cpu_t *); 178 extern uint_t cmi_ntv_hwcoreid(cpu_t *); 179 extern uint_t cmi_ntv_hwstrandid(cpu_t *); 180 extern void cmi_ntv_hwdisable_mce(cmi_hdl_t); 181 #endif /* __xpv */ 182 183 typedef struct cmi_mca_regs { 184 uint_t cmr_msrnum; 185 uint64_t cmr_msrval; 186 } cmi_mca_regs_t; 187 188 extern cmi_errno_t cmi_hdl_msrinject(cmi_hdl_t, cmi_mca_regs_t *, uint_t, 189 int); 190 extern void cmi_hdl_msrinterpose(cmi_hdl_t, cmi_mca_regs_t *, uint_t); 191 extern void cmi_hdl_msrforward(cmi_hdl_t, cmi_mca_regs_t *, uint_t); 192 extern boolean_t cmi_inj_tainted(void); 193 194 extern void cmi_faulted_enter(cmi_hdl_t); 195 extern void cmi_faulted_exit(cmi_hdl_t); 196 197 extern void cmi_pcird_nohw(void); 198 extern void cmi_pciwr_nohw(void); 199 extern uint8_t cmi_pci_getb(int, int, int, int, int *, ddi_acc_handle_t); 200 extern uint16_t cmi_pci_getw(int, int, int, int, int *, ddi_acc_handle_t); 201 extern uint32_t cmi_pci_getl(int, int, int, int, int *, ddi_acc_handle_t); 202 extern void cmi_pci_interposeb(int, int, int, int, uint8_t); 203 extern void cmi_pci_interposew(int, int, int, int, uint16_t); 204 extern void cmi_pci_interposel(int, int, int, int, uint32_t); 205 extern void cmi_pci_putb(int, int, int, int, ddi_acc_handle_t, uint8_t); 206 extern void cmi_pci_putw(int, int, int, int, ddi_acc_handle_t, uint16_t); 207 extern void cmi_pci_putl(int, int, int, int, ddi_acc_handle_t, uint32_t); 208 209 extern void cmi_mca_init(cmi_hdl_t); 210 211 extern void cmi_hdl_poke(cmi_hdl_t); 212 extern void cmi_hdl_int(cmi_hdl_t, int); 213 214 extern void cmi_mca_trap(struct regs *); 215 216 extern boolean_t cmi_panic_on_ue(void); 217 218 extern void cmi_mc_register(cmi_hdl_t, const struct cmi_mc_ops *, void *); 219 extern cmi_errno_t cmi_mc_register_global(const struct cmi_mc_ops *, void *); 220 extern void cmi_mc_sw_memscrub_disable(void); 221 extern cmi_errno_t cmi_mc_patounum(uint64_t, uint8_t, uint8_t, uint32_t, int, 222 mc_unum_t *); 223 extern cmi_errno_t cmi_mc_unumtopa(mc_unum_t *, nvlist_t *, uint64_t *); 224 extern void cmi_mc_logout(cmi_hdl_t, boolean_t, boolean_t); 225 226 extern void cmi_panic_callback(void); 227 228 #endif /* _KERNEL */ 229 230 #ifdef __cplusplus 231 } 232 #endif 233 234 #endif /* _SYS_CPU_MODULE_H */ 235