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391 lines
11 KiB
391 lines
11 KiB
/****************************************************************************** |
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* arch-x86/mca.h |
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* Guest OS machine check interface to x86 Xen. |
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* |
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* Contributed by Advanced Micro Devices, Inc. |
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* Author: Christoph Egger <[email protected]> |
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* |
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* Updated by Intel Corporation |
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* Author: Liu, Jinsong <[email protected]> |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to |
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* deal in the Software without restriction, including without limitation the |
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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* sell copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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*/ |
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#ifndef __XEN_PUBLIC_ARCH_X86_MCA_H__ |
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#define __XEN_PUBLIC_ARCH_X86_MCA_H__ |
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/* Hypercall */ |
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#define __HYPERVISOR_mca __HYPERVISOR_arch_0 |
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#define XEN_MCA_INTERFACE_VERSION 0x01ecc003 |
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/* IN: Dom0 calls hypercall to retrieve nonurgent error log entry */ |
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#define XEN_MC_NONURGENT 0x1 |
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/* IN: Dom0 calls hypercall to retrieve urgent error log entry */ |
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#define XEN_MC_URGENT 0x2 |
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/* IN: Dom0 acknowledges previosly-fetched error log entry */ |
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#define XEN_MC_ACK 0x4 |
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/* OUT: All is ok */ |
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#define XEN_MC_OK 0x0 |
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/* OUT: Domain could not fetch data. */ |
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#define XEN_MC_FETCHFAILED 0x1 |
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/* OUT: There was no machine check data to fetch. */ |
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#define XEN_MC_NODATA 0x2 |
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#ifndef __ASSEMBLY__ |
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/* vIRQ injected to Dom0 */ |
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#define VIRQ_MCA VIRQ_ARCH_0 |
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/* |
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* mc_info entry types |
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* mca machine check info are recorded in mc_info entries. |
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* when fetch mca info, it can use MC_TYPE_... to distinguish |
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* different mca info. |
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*/ |
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#define MC_TYPE_GLOBAL 0 |
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#define MC_TYPE_BANK 1 |
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#define MC_TYPE_EXTENDED 2 |
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#define MC_TYPE_RECOVERY 3 |
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struct mcinfo_common { |
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uint16_t type; /* structure type */ |
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uint16_t size; /* size of this struct in bytes */ |
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}; |
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#define MC_FLAG_CORRECTABLE (1 << 0) |
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#define MC_FLAG_UNCORRECTABLE (1 << 1) |
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#define MC_FLAG_RECOVERABLE (1 << 2) |
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#define MC_FLAG_POLLED (1 << 3) |
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#define MC_FLAG_RESET (1 << 4) |
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#define MC_FLAG_CMCI (1 << 5) |
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#define MC_FLAG_MCE (1 << 6) |
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/* contains x86 global mc information */ |
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struct mcinfo_global { |
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struct mcinfo_common common; |
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uint16_t mc_domid; /* running domain at the time in error */ |
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uint16_t mc_vcpuid; /* virtual cpu scheduled for mc_domid */ |
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uint32_t mc_socketid; /* physical socket of the physical core */ |
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uint16_t mc_coreid; /* physical impacted core */ |
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uint16_t mc_core_threadid; /* core thread of physical core */ |
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uint32_t mc_apicid; |
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uint32_t mc_flags; |
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uint64_t mc_gstatus; /* global status */ |
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}; |
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/* contains x86 bank mc information */ |
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struct mcinfo_bank { |
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struct mcinfo_common common; |
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uint16_t mc_bank; /* bank nr */ |
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uint16_t mc_domid; /* domain referenced by mc_addr if valid */ |
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uint64_t mc_status; /* bank status */ |
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uint64_t mc_addr; /* bank address */ |
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uint64_t mc_misc; |
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uint64_t mc_ctrl2; |
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uint64_t mc_tsc; |
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}; |
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struct mcinfo_msr { |
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uint64_t reg; /* MSR */ |
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uint64_t value; /* MSR value */ |
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}; |
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/* contains mc information from other or additional mc MSRs */ |
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struct mcinfo_extended { |
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struct mcinfo_common common; |
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uint32_t mc_msrs; /* Number of msr with valid values. */ |
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/* |
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* Currently Intel extended MSR (32/64) include all gp registers |
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* and E(R)FLAGS, E(R)IP, E(R)MISC, up to 11/19 of them might be |
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* useful at present. So expand this array to 16/32 to leave room. |
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*/ |
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struct mcinfo_msr mc_msr[sizeof(void *) * 4]; |
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}; |
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/* Recovery Action flags. Giving recovery result information to DOM0 */ |
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/* Xen takes successful recovery action, the error is recovered */ |
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#define REC_ACTION_RECOVERED (0x1 << 0) |
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/* No action is performed by XEN */ |
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#define REC_ACTION_NONE (0x1 << 1) |
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/* It's possible DOM0 might take action ownership in some case */ |
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#define REC_ACTION_NEED_RESET (0x1 << 2) |
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/* |
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* Different Recovery Action types, if the action is performed successfully, |
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* REC_ACTION_RECOVERED flag will be returned. |
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*/ |
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/* Page Offline Action */ |
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#define MC_ACTION_PAGE_OFFLINE (0x1 << 0) |
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/* CPU offline Action */ |
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#define MC_ACTION_CPU_OFFLINE (0x1 << 1) |
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/* L3 cache disable Action */ |
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#define MC_ACTION_CACHE_SHRINK (0x1 << 2) |
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/* |
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* Below interface used between XEN/DOM0 for passing XEN's recovery action |
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* information to DOM0. |
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*/ |
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struct page_offline_action { |
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/* Params for passing the offlined page number to DOM0 */ |
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uint64_t mfn; |
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uint64_t status; |
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}; |
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struct cpu_offline_action { |
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/* Params for passing the identity of the offlined CPU to DOM0 */ |
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uint32_t mc_socketid; |
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uint16_t mc_coreid; |
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uint16_t mc_core_threadid; |
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}; |
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#define MAX_UNION_SIZE 16 |
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struct mcinfo_recovery { |
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struct mcinfo_common common; |
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uint16_t mc_bank; /* bank nr */ |
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uint8_t action_flags; |
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uint8_t action_types; |
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union { |
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struct page_offline_action page_retire; |
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struct cpu_offline_action cpu_offline; |
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uint8_t pad[MAX_UNION_SIZE]; |
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} action_info; |
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}; |
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#define MCINFO_MAXSIZE 768 |
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struct mc_info { |
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/* Number of mcinfo_* entries in mi_data */ |
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uint32_t mi_nentries; |
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uint32_t flags; |
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uint64_t mi_data[(MCINFO_MAXSIZE - 1) / 8]; |
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}; |
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DEFINE_GUEST_HANDLE_STRUCT(mc_info); |
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#define __MC_MSR_ARRAYSIZE 8 |
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#define __MC_NMSRS 1 |
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#define MC_NCAPS 7 |
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struct mcinfo_logical_cpu { |
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uint32_t mc_cpunr; |
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uint32_t mc_chipid; |
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uint16_t mc_coreid; |
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uint16_t mc_threadid; |
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uint32_t mc_apicid; |
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uint32_t mc_clusterid; |
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uint32_t mc_ncores; |
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uint32_t mc_ncores_active; |
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uint32_t mc_nthreads; |
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uint32_t mc_cpuid_level; |
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uint32_t mc_family; |
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uint32_t mc_vendor; |
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uint32_t mc_model; |
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uint32_t mc_step; |
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char mc_vendorid[16]; |
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char mc_brandid[64]; |
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uint32_t mc_cpu_caps[MC_NCAPS]; |
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uint32_t mc_cache_size; |
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uint32_t mc_cache_alignment; |
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uint32_t mc_nmsrvals; |
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struct mcinfo_msr mc_msrvalues[__MC_MSR_ARRAYSIZE]; |
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}; |
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DEFINE_GUEST_HANDLE_STRUCT(mcinfo_logical_cpu); |
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/* |
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* Prototype: |
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* uint32_t x86_mcinfo_nentries(struct mc_info *mi); |
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*/ |
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#define x86_mcinfo_nentries(_mi) \ |
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((_mi)->mi_nentries) |
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/* |
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* Prototype: |
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* struct mcinfo_common *x86_mcinfo_first(struct mc_info *mi); |
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*/ |
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#define x86_mcinfo_first(_mi) \ |
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((struct mcinfo_common *)(_mi)->mi_data) |
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/* |
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* Prototype: |
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* struct mcinfo_common *x86_mcinfo_next(struct mcinfo_common *mic); |
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*/ |
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#define x86_mcinfo_next(_mic) \ |
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((struct mcinfo_common *)((uint8_t *)(_mic) + (_mic)->size)) |
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/* |
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* Prototype: |
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* void x86_mcinfo_lookup(void *ret, struct mc_info *mi, uint16_t type); |
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*/ |
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static inline void x86_mcinfo_lookup(struct mcinfo_common **ret, |
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struct mc_info *mi, uint16_t type) |
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{ |
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uint32_t i; |
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struct mcinfo_common *mic; |
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bool found = 0; |
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if (!ret || !mi) |
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return; |
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mic = x86_mcinfo_first(mi); |
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for (i = 0; i < x86_mcinfo_nentries(mi); i++) { |
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if (mic->type == type) { |
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found = 1; |
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break; |
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} |
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mic = x86_mcinfo_next(mic); |
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} |
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*ret = found ? mic : NULL; |
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} |
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/* |
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* Fetch machine check data from hypervisor. |
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*/ |
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#define XEN_MC_fetch 1 |
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struct xen_mc_fetch { |
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/* |
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* IN: XEN_MC_NONURGENT, XEN_MC_URGENT, |
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* XEN_MC_ACK if ack'king an earlier fetch |
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* OUT: XEN_MC_OK, XEN_MC_FETCHAILED, XEN_MC_NODATA |
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*/ |
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uint32_t flags; |
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uint32_t _pad0; |
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/* OUT: id for ack, IN: id we are ack'ing */ |
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uint64_t fetch_id; |
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/* OUT variables. */ |
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GUEST_HANDLE(mc_info) data; |
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}; |
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DEFINE_GUEST_HANDLE_STRUCT(xen_mc_fetch); |
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/* |
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* This tells the hypervisor to notify a DomU about the machine check error |
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*/ |
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#define XEN_MC_notifydomain 2 |
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struct xen_mc_notifydomain { |
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/* IN variables */ |
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uint16_t mc_domid; /* The unprivileged domain to notify */ |
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uint16_t mc_vcpuid; /* The vcpu in mc_domid to notify */ |
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/* IN/OUT variables */ |
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uint32_t flags; |
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}; |
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DEFINE_GUEST_HANDLE_STRUCT(xen_mc_notifydomain); |
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#define XEN_MC_physcpuinfo 3 |
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struct xen_mc_physcpuinfo { |
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/* IN/OUT */ |
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uint32_t ncpus; |
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uint32_t _pad0; |
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/* OUT */ |
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GUEST_HANDLE(mcinfo_logical_cpu) info; |
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}; |
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#define XEN_MC_msrinject 4 |
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#define MC_MSRINJ_MAXMSRS 8 |
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struct xen_mc_msrinject { |
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/* IN */ |
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uint32_t mcinj_cpunr; /* target processor id */ |
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uint32_t mcinj_flags; /* see MC_MSRINJ_F_* below */ |
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uint32_t mcinj_count; /* 0 .. count-1 in array are valid */ |
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uint32_t _pad0; |
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struct mcinfo_msr mcinj_msr[MC_MSRINJ_MAXMSRS]; |
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}; |
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/* Flags for mcinj_flags above; bits 16-31 are reserved */ |
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#define MC_MSRINJ_F_INTERPOSE 0x1 |
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#define XEN_MC_mceinject 5 |
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struct xen_mc_mceinject { |
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unsigned int mceinj_cpunr; /* target processor id */ |
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}; |
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struct xen_mc { |
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uint32_t cmd; |
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uint32_t interface_version; /* XEN_MCA_INTERFACE_VERSION */ |
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union { |
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struct xen_mc_fetch mc_fetch; |
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struct xen_mc_notifydomain mc_notifydomain; |
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struct xen_mc_physcpuinfo mc_physcpuinfo; |
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struct xen_mc_msrinject mc_msrinject; |
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struct xen_mc_mceinject mc_mceinject; |
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} u; |
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}; |
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DEFINE_GUEST_HANDLE_STRUCT(xen_mc); |
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/* |
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* Fields are zero when not available. Also, this struct is shared with |
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* userspace mcelog and thus must keep existing fields at current offsets. |
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* Only add new fields to the end of the structure |
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*/ |
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struct xen_mce { |
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__u64 status; |
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__u64 misc; |
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__u64 addr; |
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__u64 mcgstatus; |
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__u64 ip; |
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__u64 tsc; /* cpu time stamp counter */ |
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__u64 time; /* wall time_t when error was detected */ |
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__u8 cpuvendor; /* cpu vendor as encoded in system.h */ |
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__u8 inject_flags; /* software inject flags */ |
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__u16 pad; |
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__u32 cpuid; /* CPUID 1 EAX */ |
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__u8 cs; /* code segment */ |
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__u8 bank; /* machine check bank */ |
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__u8 cpu; /* cpu number; obsolete; use extcpu now */ |
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__u8 finished; /* entry is valid */ |
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__u32 extcpu; /* linux cpu number that detected the error */ |
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__u32 socketid; /* CPU socket ID */ |
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__u32 apicid; /* CPU initial apic ID */ |
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__u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */ |
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__u64 synd; /* MCA_SYND MSR: only valid on SMCA systems */ |
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__u64 ipid; /* MCA_IPID MSR: only valid on SMCA systems */ |
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__u64 ppin; /* Protected Processor Inventory Number */ |
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}; |
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/* |
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* This structure contains all data related to the MCE log. Also |
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* carries a signature to make it easier to find from external |
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* debugging tools. Each entry is only valid when its finished flag |
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* is set. |
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*/ |
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#define XEN_MCE_LOG_LEN 32 |
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struct xen_mce_log { |
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char signature[12]; /* "MACHINECHECK" */ |
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unsigned len; /* = XEN_MCE_LOG_LEN */ |
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unsigned next; |
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unsigned flags; |
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unsigned recordlen; /* length of struct xen_mce */ |
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struct xen_mce entry[XEN_MCE_LOG_LEN]; |
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}; |
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#define XEN_MCE_OVERFLOW 0 /* bit 0 in flags means overflow */ |
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#define XEN_MCE_LOG_SIGNATURE "MACHINECHECK" |
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#define MCE_GET_RECORD_LEN _IOR('M', 1, int) |
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#define MCE_GET_LOG_LEN _IOR('M', 2, int) |
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#define MCE_GETCLEAR_FLAGS _IOR('M', 3, int) |
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#endif /* __ASSEMBLY__ */ |
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#endif /* __XEN_PUBLIC_ARCH_X86_MCA_H__ */
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