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Diffstat (limited to 'arch/powerpc/include/asm/mce.h')
| -rw-r--r-- | arch/powerpc/include/asm/mce.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm/mce.h new file mode 100644 index 000000000..c9f0936bd --- /dev/null +++ b/arch/powerpc/include/asm/mce.h @@ -0,0 +1,268 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Machine check exception header file. + * + * Copyright 2013 IBM Corporation + * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> + */ + +#ifndef __ASM_PPC64_MCE_H__ +#define __ASM_PPC64_MCE_H__ + +#include <linux/bitops.h> + +enum MCE_Version { + MCE_V1 = 1, +}; + +enum MCE_Severity { + MCE_SEV_NO_ERROR = 0, + MCE_SEV_WARNING = 1, + MCE_SEV_SEVERE = 2, + MCE_SEV_FATAL = 3, +}; + +enum MCE_Disposition { + MCE_DISPOSITION_RECOVERED = 0, + MCE_DISPOSITION_NOT_RECOVERED = 1, +}; + +enum MCE_Initiator { + MCE_INITIATOR_UNKNOWN = 0, + MCE_INITIATOR_CPU = 1, + MCE_INITIATOR_PCI = 2, + MCE_INITIATOR_ISA = 3, + MCE_INITIATOR_MEMORY= 4, + MCE_INITIATOR_POWERMGM = 5, +}; + +enum MCE_ErrorType { + MCE_ERROR_TYPE_UNKNOWN = 0, + MCE_ERROR_TYPE_UE = 1, + MCE_ERROR_TYPE_SLB = 2, + MCE_ERROR_TYPE_ERAT = 3, + MCE_ERROR_TYPE_TLB = 4, + MCE_ERROR_TYPE_USER = 5, + MCE_ERROR_TYPE_RA = 6, + MCE_ERROR_TYPE_LINK = 7, + MCE_ERROR_TYPE_DCACHE = 8, + MCE_ERROR_TYPE_ICACHE = 9, +}; + +enum MCE_ErrorClass { + MCE_ECLASS_UNKNOWN = 0, + MCE_ECLASS_HARDWARE, + MCE_ECLASS_HARD_INDETERMINATE, + MCE_ECLASS_SOFTWARE, + MCE_ECLASS_SOFT_INDETERMINATE, +}; + +enum MCE_UeErrorType { + MCE_UE_ERROR_INDETERMINATE = 0, + MCE_UE_ERROR_IFETCH = 1, + MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH = 2, + MCE_UE_ERROR_LOAD_STORE = 3, + MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 4, +}; + +enum MCE_SlbErrorType { + MCE_SLB_ERROR_INDETERMINATE = 0, + MCE_SLB_ERROR_PARITY = 1, + MCE_SLB_ERROR_MULTIHIT = 2, +}; + +enum MCE_EratErrorType { + MCE_ERAT_ERROR_INDETERMINATE = 0, + MCE_ERAT_ERROR_PARITY = 1, + MCE_ERAT_ERROR_MULTIHIT = 2, +}; + +enum MCE_TlbErrorType { + MCE_TLB_ERROR_INDETERMINATE = 0, + MCE_TLB_ERROR_PARITY = 1, + MCE_TLB_ERROR_MULTIHIT = 2, +}; + +enum MCE_UserErrorType { + MCE_USER_ERROR_INDETERMINATE = 0, + MCE_USER_ERROR_TLBIE = 1, + MCE_USER_ERROR_SCV = 2, +}; + +enum MCE_RaErrorType { + MCE_RA_ERROR_INDETERMINATE = 0, + MCE_RA_ERROR_IFETCH = 1, + MCE_RA_ERROR_IFETCH_FOREIGN = 2, + MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH = 3, + MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH_FOREIGN = 4, + MCE_RA_ERROR_LOAD = 5, + MCE_RA_ERROR_STORE = 6, + MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 7, + MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN = 8, + MCE_RA_ERROR_LOAD_STORE_FOREIGN = 9, +}; + +enum MCE_LinkErrorType { + MCE_LINK_ERROR_INDETERMINATE = 0, + MCE_LINK_ERROR_IFETCH_TIMEOUT = 1, + MCE_LINK_ERROR_PAGE_TABLE_WALK_IFETCH_TIMEOUT = 2, + MCE_LINK_ERROR_LOAD_TIMEOUT = 3, + MCE_LINK_ERROR_STORE_TIMEOUT = 4, + MCE_LINK_ERROR_PAGE_TABLE_WALK_LOAD_STORE_TIMEOUT = 5, +}; + +struct machine_check_event { + enum MCE_Version version:8; + u8 in_use; + enum MCE_Severity severity:8; + enum MCE_Initiator initiator:8; + enum MCE_ErrorType error_type:8; + enum MCE_ErrorClass error_class:8; + enum MCE_Disposition disposition:8; + bool sync_error; + u16 cpu; + u64 gpr3; + u64 srr0; + u64 srr1; + union { + struct { + enum MCE_UeErrorType ue_error_type:8; + u8 effective_address_provided; + u8 physical_address_provided; + u8 ignore_event; + u8 reserved_1[4]; + u64 effective_address; + u64 physical_address; + u8 reserved_2[8]; + } ue_error; + + struct { + enum MCE_SlbErrorType slb_error_type:8; + u8 effective_address_provided; + u8 reserved_1[6]; + u64 effective_address; + u8 reserved_2[16]; + } slb_error; + + struct { + enum MCE_EratErrorType erat_error_type:8; + u8 effective_address_provided; + u8 reserved_1[6]; + u64 effective_address; + u8 reserved_2[16]; + } erat_error; + + struct { + enum MCE_TlbErrorType tlb_error_type:8; + u8 effective_address_provided; + u8 reserved_1[6]; + u64 effective_address; + u8 reserved_2[16]; + } tlb_error; + + struct { + enum MCE_UserErrorType user_error_type:8; + u8 effective_address_provided; + u8 reserved_1[6]; + u64 effective_address; + u8 reserved_2[16]; + } user_error; + + struct { + enum MCE_RaErrorType ra_error_type:8; + u8 effective_address_provided; + u8 reserved_1[6]; + u64 effective_address; + u8 reserved_2[16]; + } ra_error; + + struct { + enum MCE_LinkErrorType link_error_type:8; + u8 effective_address_provided; + u8 reserved_1[6]; + u64 effective_address; + u8 reserved_2[16]; + } link_error; + } u; +}; + +struct mce_error_info { + enum MCE_ErrorType error_type:8; + union { + enum MCE_UeErrorType ue_error_type:8; + enum MCE_SlbErrorType slb_error_type:8; + enum MCE_EratErrorType erat_error_type:8; + enum MCE_TlbErrorType tlb_error_type:8; + enum MCE_UserErrorType user_error_type:8; + enum MCE_RaErrorType ra_error_type:8; + enum MCE_LinkErrorType link_error_type:8; + } u; + enum MCE_Severity severity:8; + enum MCE_Initiator initiator:8; + enum MCE_ErrorClass error_class:8; + bool sync_error; + bool ignore_event; +}; + +#define MAX_MC_EVT 10 + +struct mce_info { + int mce_nest_count; + struct machine_check_event mce_event[MAX_MC_EVT]; + /* Queue for delayed MCE events. */ + int mce_queue_count; + struct machine_check_event mce_event_queue[MAX_MC_EVT]; + /* Queue for delayed MCE UE events. */ + int mce_ue_count; + struct machine_check_event mce_ue_event_queue[MAX_MC_EVT]; +}; + +/* Release flags for get_mce_event() */ +#define MCE_EVENT_RELEASE true +#define MCE_EVENT_DONTRELEASE false + +struct pt_regs; +struct notifier_block; + +extern void save_mce_event(struct pt_regs *regs, long handled, + struct mce_error_info *mce_err, uint64_t nip, + uint64_t addr, uint64_t phys_addr); +extern int get_mce_event(struct machine_check_event *mce, bool release); +extern void release_mce_event(void); +extern void machine_check_queue_event(void); +extern void machine_check_print_event_info(struct machine_check_event *evt, + bool user_mode, bool in_guest); +unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr); +extern void mce_common_process_ue(struct pt_regs *regs, + struct mce_error_info *mce_err); +void mce_irq_work_queue(void); +int mce_register_notifier(struct notifier_block *nb); +int mce_unregister_notifier(struct notifier_block *nb); + +#ifdef CONFIG_PPC_BOOK3S_64 +void mce_run_irq_context_handlers(void); +#else +static inline void mce_run_irq_context_handlers(void) { }; +#endif /* CONFIG_PPC_BOOK3S_64 */ + +#ifdef CONFIG_PPC_BOOK3S_64 +void set_mce_pending_irq_work(void); +void clear_mce_pending_irq_work(void); +#endif /* CONFIG_PPC_BOOK3S_64 */ + +#ifdef CONFIG_PPC_BOOK3S_64 +void flush_and_reload_slb(void); +void flush_erat(void); +long __machine_check_early_realmode_p7(struct pt_regs *regs); +long __machine_check_early_realmode_p8(struct pt_regs *regs); +long __machine_check_early_realmode_p9(struct pt_regs *regs); +long __machine_check_early_realmode_p10(struct pt_regs *regs); +#endif /* CONFIG_PPC_BOOK3S_64 */ + +#ifdef CONFIG_PPC_BOOK3S_64 +void mce_init(void); +#else +static inline void mce_init(void) { }; +#endif /* CONFIG_PPC_BOOK3S_64 */ + +#endif /* __ASM_PPC64_MCE_H__ */ |