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148 lines
3.6 KiB
148 lines
3.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef GHES_H |
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#define GHES_H |
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#include <acpi/apei.h> |
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#include <acpi/hed.h> |
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/* |
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* One struct ghes is created for each generic hardware error source. |
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* It provides the context for APEI hardware error timer/IRQ/SCI/NMI |
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* handler. |
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* |
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* estatus: memory buffer for error status block, allocated during |
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* HEST parsing. |
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*/ |
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#define GHES_EXITING 0x0002 |
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struct ghes { |
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union { |
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struct acpi_hest_generic *generic; |
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struct acpi_hest_generic_v2 *generic_v2; |
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}; |
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struct acpi_hest_generic_status *estatus; |
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unsigned long flags; |
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union { |
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struct list_head list; |
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struct timer_list timer; |
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unsigned int irq; |
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}; |
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}; |
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struct ghes_estatus_node { |
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struct llist_node llnode; |
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struct acpi_hest_generic *generic; |
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struct ghes *ghes; |
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int task_work_cpu; |
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struct callback_head task_work; |
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}; |
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struct ghes_estatus_cache { |
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u32 estatus_len; |
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atomic_t count; |
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struct acpi_hest_generic *generic; |
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unsigned long long time_in; |
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struct rcu_head rcu; |
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}; |
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enum { |
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GHES_SEV_NO = 0x0, |
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GHES_SEV_CORRECTED = 0x1, |
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GHES_SEV_RECOVERABLE = 0x2, |
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GHES_SEV_PANIC = 0x3, |
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}; |
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#ifdef CONFIG_ACPI_APEI_GHES |
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/** |
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* ghes_register_vendor_record_notifier - register a notifier for vendor |
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* records that the kernel would otherwise ignore. |
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* @nb: pointer to the notifier_block structure of the event handler. |
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* |
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* return 0 : SUCCESS, non-zero : FAIL |
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*/ |
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int ghes_register_vendor_record_notifier(struct notifier_block *nb); |
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/** |
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* ghes_unregister_vendor_record_notifier - unregister the previously |
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* registered vendor record notifier. |
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* @nb: pointer to the notifier_block structure of the vendor record handler. |
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*/ |
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void ghes_unregister_vendor_record_notifier(struct notifier_block *nb); |
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#endif |
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int ghes_estatus_pool_init(int num_ghes); |
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/* From drivers/edac/ghes_edac.c */ |
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#ifdef CONFIG_EDAC_GHES |
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void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err); |
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int ghes_edac_register(struct ghes *ghes, struct device *dev); |
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void ghes_edac_unregister(struct ghes *ghes); |
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#else |
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static inline void ghes_edac_report_mem_error(int sev, |
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struct cper_sec_mem_err *mem_err) |
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{ |
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} |
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static inline int ghes_edac_register(struct ghes *ghes, struct device *dev) |
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{ |
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return -ENODEV; |
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} |
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static inline void ghes_edac_unregister(struct ghes *ghes) |
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{ |
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} |
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#endif |
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static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata) |
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{ |
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return gdata->revision >> 8; |
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} |
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static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata) |
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{ |
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if (acpi_hest_get_version(gdata) >= 3) |
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return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1); |
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return gdata + 1; |
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} |
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static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata) |
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{ |
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return ((struct acpi_hest_generic_data *)(gdata))->error_data_length; |
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} |
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static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata) |
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{ |
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if (acpi_hest_get_version(gdata) >= 3) |
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return sizeof(struct acpi_hest_generic_data_v300); |
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return sizeof(struct acpi_hest_generic_data); |
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} |
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static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata) |
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{ |
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return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata)); |
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} |
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static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata) |
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{ |
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return (void *)(gdata) + acpi_hest_get_record_size(gdata); |
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} |
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#define apei_estatus_for_each_section(estatus, section) \ |
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for (section = (struct acpi_hest_generic_data *)(estatus + 1); \ |
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(void *)section - (void *)(estatus + 1) < estatus->data_length; \ |
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section = acpi_hest_get_next(section)) |
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#ifdef CONFIG_ACPI_APEI_SEA |
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int ghes_notify_sea(void); |
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#else |
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static inline int ghes_notify_sea(void) { return -ENOENT; } |
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#endif |
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#endif /* GHES_H */
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