linux/include/acpi/ghes.h
Linus Torvalds 7adcadb984 - Make ghes_edac a simple module like the rest of the EDAC drivers and
drop this forced built-in only configuration by disentangling it from
 GHES. Work by Jia He.
 
 - The usual small cleanups and improvements all over EDAC land
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Merge tag 'edac_updates_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC updates from Borislav Petkov:

 - Make ghes_edac a simple module like the rest of the EDAC drivers and
   drop the forced built-in only configuration by disentangling it from
   GHES (Jia He)

 - The usual small cleanups and improvements all over EDAC land

* tag 'edac_updates_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/i10nm: fix refcount leak in pci_get_dev_wrapper()
  EDAC/i5400: Fix typo in comment: vaious -> various
  EDAC/mc_sysfs: Increase legacy channel support to 12
  MAINTAINERS: Make Mauro EDAC reviewer
  MAINTAINERS: Make Manivannan Sadhasivam the maintainer of qcom_edac
  EDAC/igen6: Return the correct error type when not the MC owner
  apei/ghes: Use xchg_release() for updating new cache slot instead of cmpxchg()
  EDAC: Check for GHES preference in the chipset-specific EDAC drivers
  EDAC/ghes: Make ghes_edac a proper module
  EDAC/ghes: Prepare to make ghes_edac a proper module
  EDAC/ghes: Add a notifier for reporting memory errors
  efi/cper: Export several helpers for ghes_edac to use
  EDAC/i5000: Mark as BROKEN
2022-12-12 14:47:31 -08:00

133 lines
3.4 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);
#else
static inline struct list_head *ghes_get_devices(void) { return NULL; }
#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 */