/* SPDX-License-Identifier: GPL-2.0 */

  /*
   * apei.h - ACPI Platform Error Interface
   */
  
  #ifndef ACPI_APEI_H
  #define ACPI_APEI_H

  #include <linux/acpi.h>
  #include <linux/cper.h>
  #include <asm/ioctls.h>
  
  #define APEI_ERST_INVALID_RECORD_ID	0xffffffffffffffffULL
  
  #define APEI_ERST_CLEAR_RECORD		_IOW('E', 1, u64)
  #define APEI_ERST_GET_RECORD_COUNT	_IOR('E', 2, u32)
  
  #ifdef __KERNEL__

  enum hest_status {
  	HEST_ENABLED,
  	HEST_DISABLED,
  	HEST_NOT_FOUND,
  };
  
  extern int hest_disable;

  extern int erst_disable;

  #ifdef CONFIG_ACPI_APEI_GHES

  extern bool ghes_disable;

  #else
  #define ghes_disable 1
  #endif

  #ifdef CONFIG_ACPI_APEI
  void __init acpi_hest_init(void);
  #else
  static inline void acpi_hest_init(void) { return; }
  #endif

  typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
  int apei_hest_parse(apei_hest_func_t func, void *data);

  int erst_write(const struct cper_record_header *record);
  ssize_t erst_get_record_count(void);

  int erst_get_record_id_begin(int *pos);
  int erst_get_record_id_next(int *pos, u64 *record_id);
  void erst_get_record_id_end(void);

  ssize_t erst_read(u64 record_id, struct cper_record_header *record,
  		  size_t buflen);

  int erst_clear(u64 record_id);

  int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data);
  void arch_apei_report_mem_error(int sev, struct cper_sec_mem_err *mem_err);

  #endif

  #endif