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