/drivers/acpi/apei/apei-internal.h

  1/*
  2 * apei-internal.h - ACPI Platform Error Interface internal
  3 * definations.
  4 */
  5
  6#ifndef APEI_INTERNAL_H
  7#define APEI_INTERNAL_H
  8
  9#include <linux/cper.h>
 10
 11struct apei_exec_context;
 12
 13typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
 14				    struct acpi_whea_header *entry);
 15
 16#define APEI_EXEC_INS_ACCESS_REGISTER	0x0001
 17
 18struct apei_exec_ins_type {
 19	u32 flags;
 20	apei_exec_ins_func_t run;
 21};
 22
 23struct apei_exec_context {
 24	u32 ip;
 25	u64 value;
 26	u64 var1;
 27	u64 var2;
 28	u64 src_base;
 29	u64 dst_base;
 30	struct apei_exec_ins_type *ins_table;
 31	u32 instructions;
 32	struct acpi_whea_header *action_table;
 33	u32 entries;
 34};
 35
 36void apei_exec_ctx_init(struct apei_exec_context *ctx,
 37			struct apei_exec_ins_type *ins_table,
 38			u32 instructions,
 39			struct acpi_whea_header *action_table,
 40			u32 entries);
 41
 42static inline void apei_exec_ctx_set_input(struct apei_exec_context *ctx,
 43					   u64 input)
 44{
 45	ctx->value = input;
 46}
 47
 48static inline u64 apei_exec_ctx_get_output(struct apei_exec_context *ctx)
 49{
 50	return ctx->value;
 51}
 52
 53int apei_exec_run(struct apei_exec_context *ctx, u8 action);
 54
 55/* Common instruction implementation */
 56
 57/* IP has been set in instruction function */
 58#define APEI_EXEC_SET_IP	1
 59
 60int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val);
 61int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val);
 62int apei_exec_read_register(struct apei_exec_context *ctx,
 63			    struct acpi_whea_header *entry);
 64int apei_exec_read_register_value(struct apei_exec_context *ctx,
 65				  struct acpi_whea_header *entry);
 66int apei_exec_write_register(struct apei_exec_context *ctx,
 67			     struct acpi_whea_header *entry);
 68int apei_exec_write_register_value(struct apei_exec_context *ctx,
 69				   struct acpi_whea_header *entry);
 70int apei_exec_noop(struct apei_exec_context *ctx,
 71		   struct acpi_whea_header *entry);
 72int apei_exec_pre_map_gars(struct apei_exec_context *ctx);
 73int apei_exec_post_unmap_gars(struct apei_exec_context *ctx);
 74
 75struct apei_resources {
 76	struct list_head iomem;
 77	struct list_head ioport;
 78};
 79
 80static inline void apei_resources_init(struct apei_resources *resources)
 81{
 82	INIT_LIST_HEAD(&resources->iomem);
 83	INIT_LIST_HEAD(&resources->ioport);
 84}
 85
 86void apei_resources_fini(struct apei_resources *resources);
 87int apei_resources_sub(struct apei_resources *resources1,
 88		       struct apei_resources *resources2);
 89int apei_resources_request(struct apei_resources *resources,
 90			   const char *desc);
 91void apei_resources_release(struct apei_resources *resources);
 92int apei_exec_collect_resources(struct apei_exec_context *ctx,
 93				struct apei_resources *resources);
 94
 95struct dentry;
 96struct dentry *apei_get_debugfs_dir(void);
 97
 98#define apei_estatus_for_each_section(estatus, section)			\
 99	for (section = (struct acpi_hest_generic_data *)(estatus + 1);	\
100	     (void *)section - (void *)estatus < estatus->data_length;	\
101	     section = (void *)(section+1) + section->error_data_length)
102
103static inline u32 apei_estatus_len(struct acpi_hest_generic_status *estatus)
104{
105	if (estatus->raw_data_length)
106		return estatus->raw_data_offset + \
107			estatus->raw_data_length;
108	else
109		return sizeof(*estatus) + estatus->data_length;
110}
111
112void apei_estatus_print(const char *pfx,
113			const struct acpi_hest_generic_status *estatus);
114int apei_estatus_check_header(const struct acpi_hest_generic_status *estatus);
115int apei_estatus_check(const struct acpi_hest_generic_status *estatus);
116#endif