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Diffstat (limited to 'sys/xen/interface/arch-x86/xen-mca.h')
| -rw-r--r-- | sys/xen/interface/arch-x86/xen-mca.h | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/sys/xen/interface/arch-x86/xen-mca.h b/sys/xen/interface/arch-x86/xen-mca.h deleted file mode 100644 index 103d41f..0000000 --- a/sys/xen/interface/arch-x86/xen-mca.h +++ /dev/null @@ -1,279 +0,0 @@ -/****************************************************************************** - * arch-x86/mca.h - * - * Contributed by Advanced Micro Devices, Inc. - * Author: Christoph Egger <Christoph.Egger@amd.com> - * - * Guest OS machine check interface to x86 Xen. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -/* Full MCA functionality has the following Usecases from the guest side: - * - * Must have's: - * 1. Dom0 and DomU register machine check trap callback handlers - * (already done via "set_trap_table" hypercall) - * 2. Dom0 registers machine check event callback handler - * (doable via EVTCHNOP_bind_virq) - * 3. Dom0 and DomU fetches machine check data - * 4. Dom0 wants Xen to notify a DomU - * 5. Dom0 gets DomU ID from physical address - * 6. Dom0 wants Xen to kill DomU (already done for "xm destroy") - * - * Nice to have's: - * 7. Dom0 wants Xen to deactivate a physical CPU - * This is better done as separate task, physical CPU hotplugging, - * and hypercall(s) should be sysctl's - * 8. Page migration proposed from Xen NUMA work, where Dom0 can tell Xen to - * move a DomU (or Dom0 itself) away from a malicious page - * producing correctable errors. - * 9. offlining physical page: - * Xen free's and never re-uses a certain physical page. - * 10. Testfacility: Allow Dom0 to write values into machine check MSR's - * and tell Xen to trigger a machine check - */ - -#ifndef __XEN_PUBLIC_ARCH_X86_MCA_H__ -#define __XEN_PUBLIC_ARCH_X86_MCA_H__ - -/* Hypercall */ -#define __HYPERVISOR_mca __HYPERVISOR_arch_0 - -#define XEN_MCA_INTERFACE_VERSION 0x03000001 - -/* IN: Dom0 calls hypercall from MC event handler. */ -#define XEN_MC_CORRECTABLE 0x0 -/* IN: Dom0/DomU calls hypercall from MC trap handler. */ -#define XEN_MC_TRAP 0x1 -/* XEN_MC_CORRECTABLE and XEN_MC_TRAP are mutually exclusive. */ - -/* OUT: All is ok */ -#define XEN_MC_OK 0x0 -/* OUT: Domain could not fetch data. */ -#define XEN_MC_FETCHFAILED 0x1 -/* OUT: There was no machine check data to fetch. */ -#define XEN_MC_NODATA 0x2 -/* OUT: Between notification time and this hypercall an other - * (most likely) correctable error happened. The fetched data, - * does not match the original machine check data. */ -#define XEN_MC_NOMATCH 0x4 - -/* OUT: DomU did not register MC NMI handler. Try something else. */ -#define XEN_MC_CANNOTHANDLE 0x8 -/* OUT: Notifying DomU failed. Retry later or try something else. */ -#define XEN_MC_NOTDELIVERED 0x10 -/* Note, XEN_MC_CANNOTHANDLE and XEN_MC_NOTDELIVERED are mutually exclusive. */ - - -#ifndef __ASSEMBLY__ - -#define VIRQ_MCA VIRQ_ARCH_0 /* G. (DOM0) Machine Check Architecture */ - -/* - * Machine Check Architecure: - * structs are read-only and used to report all kinds of - * correctable and uncorrectable errors detected by the HW. - * Dom0 and DomU: register a handler to get notified. - * Dom0 only: Correctable errors are reported via VIRQ_MCA - * Dom0 and DomU: Uncorrectable errors are reported via nmi handlers - */ -#define MC_TYPE_GLOBAL 0 -#define MC_TYPE_BANK 1 -#define MC_TYPE_EXTENDED 2 - -struct mcinfo_common { - uint16_t type; /* structure type */ - uint16_t size; /* size of this struct in bytes */ -}; - - -#define MC_FLAG_CORRECTABLE (1 << 0) -#define MC_FLAG_UNCORRECTABLE (1 << 1) - -/* contains global x86 mc information */ -struct mcinfo_global { - struct mcinfo_common common; - - /* running domain at the time in error (most likely the impacted one) */ - uint16_t mc_domid; - uint32_t mc_socketid; /* physical socket of the physical core */ - uint16_t mc_coreid; /* physical impacted core */ - uint16_t mc_core_threadid; /* core thread of physical core */ - uint16_t mc_vcpuid; /* virtual cpu scheduled for mc_domid */ - uint64_t mc_gstatus; /* global status */ - uint32_t mc_flags; -}; - -/* contains bank local x86 mc information */ -struct mcinfo_bank { - struct mcinfo_common common; - - uint16_t mc_bank; /* bank nr */ - uint16_t mc_domid; /* Usecase 5: domain referenced by mc_addr on dom0 - * and if mc_addr is valid. Never valid on DomU. */ - uint64_t mc_status; /* bank status */ - uint64_t mc_addr; /* bank address, only valid - * if addr bit is set in mc_status */ - uint64_t mc_misc; -}; - - -struct mcinfo_msr { - uint64_t reg; /* MSR */ - uint64_t value; /* MSR value */ -}; - -/* contains mc information from other - * or additional mc MSRs */ -struct mcinfo_extended { - struct mcinfo_common common; - - /* You can fill up to five registers. - * If you need more, then use this structure - * multiple times. */ - - uint32_t mc_msrs; /* Number of msr with valid values. */ - struct mcinfo_msr mc_msr[5]; -}; - -#define MCINFO_HYPERCALLSIZE 1024 -#define MCINFO_MAXSIZE 768 - -struct mc_info { - /* Number of mcinfo_* entries in mi_data */ - uint32_t mi_nentries; - - uint8_t mi_data[MCINFO_MAXSIZE - sizeof(uint32_t)]; -}; -typedef struct mc_info mc_info_t; - - - -/* - * OS's should use these instead of writing their own lookup function - * each with its own bugs and drawbacks. - * We use macros instead of static inline functions to allow guests - * to include this header in assembly files (*.S). - */ -/* Prototype: - * uint32_t x86_mcinfo_nentries(struct mc_info *mi); - */ -#define x86_mcinfo_nentries(_mi) \ - (_mi)->mi_nentries -/* Prototype: - * struct mcinfo_common *x86_mcinfo_first(struct mc_info *mi); - */ -#define x86_mcinfo_first(_mi) \ - (struct mcinfo_common *)((_mi)->mi_data) -/* Prototype: - * struct mcinfo_common *x86_mcinfo_next(struct mcinfo_common *mic); - */ -#define x86_mcinfo_next(_mic) \ - (struct mcinfo_common *)((uint8_t *)(_mic) + (_mic)->size) - -/* Prototype: - * void x86_mcinfo_lookup(void *ret, struct mc_info *mi, uint16_t type); - */ -#define x86_mcinfo_lookup(_ret, _mi, _type) \ - do { \ - uint32_t found, i; \ - struct mcinfo_common *_mic; \ - \ - found = 0; \ - (_ret) = NULL; \ - if (_mi == NULL) break; \ - _mic = x86_mcinfo_first(_mi); \ - for (i = 0; i < x86_mcinfo_nentries(_mi); i++) { \ - if (_mic->type == (_type)) { \ - found = 1; \ - break; \ - } \ - _mic = x86_mcinfo_next(_mic); \ - } \ - (_ret) = found ? _mic : NULL; \ - } while (0) - - -/* Usecase 1 - * Register machine check trap callback handler - * (already done via "set_trap_table" hypercall) - */ - -/* Usecase 2 - * Dom0 registers machine check event callback handler - * done by EVTCHNOP_bind_virq - */ - -/* Usecase 3 - * Fetch machine check data from hypervisor. - * Note, this hypercall is special, because both Dom0 and DomU must use this. - */ -#define XEN_MC_fetch 1 -struct xen_mc_fetch { - /* IN/OUT variables. */ - uint32_t flags; - -/* IN: XEN_MC_CORRECTABLE, XEN_MC_TRAP */ -/* OUT: XEN_MC_OK, XEN_MC_FETCHFAILED, XEN_MC_NODATA, XEN_MC_NOMATCH */ - - /* OUT variables. */ - uint32_t fetch_idx; /* only useful for Dom0 for the notify hypercall */ - struct mc_info mc_info; -}; -typedef struct xen_mc_fetch xen_mc_fetch_t; -DEFINE_XEN_GUEST_HANDLE(xen_mc_fetch_t); - - -/* Usecase 4 - * This tells the hypervisor to notify a DomU about the machine check error - */ -#define XEN_MC_notifydomain 2 -struct xen_mc_notifydomain { - /* IN variables. */ - uint16_t mc_domid; /* The unprivileged domain to notify. */ - uint16_t mc_vcpuid; /* The vcpu in mc_domid to notify. - * Usually echo'd value from the fetch hypercall. */ - uint32_t fetch_idx; /* echo'd value from the fetch hypercall. */ - - /* IN/OUT variables. */ - uint32_t flags; - -/* IN: XEN_MC_CORRECTABLE, XEN_MC_TRAP */ -/* OUT: XEN_MC_OK, XEN_MC_CANNOTHANDLE, XEN_MC_NOTDELIVERED, XEN_MC_NOMATCH */ -}; -typedef struct xen_mc_notifydomain xen_mc_notifydomain_t; -DEFINE_XEN_GUEST_HANDLE(xen_mc_notifydomain_t); - - -struct xen_mc { - uint32_t cmd; - uint32_t interface_version; /* XEN_MCA_INTERFACE_VERSION */ - union { - struct xen_mc_fetch mc_fetch; - struct xen_mc_notifydomain mc_notifydomain; - uint8_t pad[MCINFO_HYPERCALLSIZE]; - } u; -}; -typedef struct xen_mc xen_mc_t; -DEFINE_XEN_GUEST_HANDLE(xen_mc_t); - -#endif /* __ASSEMBLY__ */ - -#endif /* __XEN_PUBLIC_ARCH_X86_MCA_H__ */ |
