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/* SPDX-License-Identifier: GPL-2.0 */
/*
* apei-internal.h - ACPI Platform Error Interface internal
* definitions.
*/
#ifndef APEI_INTERNAL_H
#define APEI_INTERNAL_H
#include <linux/cper.h>
#include <linux/acpi.h>
struct apei_exec_context;
typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
struct acpi_whea_header *entry);
#define APEI_EXEC_INS_ACCESS_REGISTER 0x0001
struct apei_exec_ins_type {
u32 flags;
apei_exec_ins_func_t run;
};
struct apei_exec_context {
u32 ip;
u64 value;
u64 var1;
u64 var2;
u64 src_base;
u64 dst_base;
struct apei_exec_ins_type *ins_table;
u32 instructions;
struct acpi_whea_header *action_table;
u32 entries;
};
void apei_exec_ctx_init(struct apei_exec_context *ctx,
struct apei_exec_ins_type *ins_table,
u32 instructions,
struct acpi_whea_header *action_table,
u32 entries);
static inline void apei_exec_ctx_set_input(struct apei_exec_context *ctx,
u64 input)
{
ctx->value = input;
}
static inline u64 apei_exec_ctx_get_output(struct apei_exec_context *ctx)
{
return ctx->value;
}
int __apei_exec_run(struct apei_exec_context *ctx, u8 action, bool optional);
static inline int apei_exec_run(struct apei_exec_context *ctx, u8 action)
{
return __apei_exec_run(ctx, action, 0);
}
/* It is optional whether the firmware provides the action */
static inline int apei_exec_run_optional(struct apei_exec_context *ctx, u8 action)
{
return __apei_exec_run(ctx, action, 1);
}
/* Common instruction implementation */
/* IP has been set in instruction function */
#define APEI_EXEC_SET_IP 1
int apei_map_generic_address(struct acpi_generic_address *reg);
static inline void apei_unmap_generic_address(struct acpi_generic_address *reg)
{
acpi_os_unmap_generic_address(reg);
}
int apei_read(u64 *val, struct acpi_generic_address *reg);
int apei_write(u64 val, struct acpi_generic_address *reg);
int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val);
int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val);
int apei_exec_read_register(struct apei_exec_context *ctx,
struct acpi_whea_header *entry);
int apei_exec_read_register_value(struct apei_exec_context *ctx,
struct acpi_whea_header *entry);
int apei_exec_write_register(struct apei_exec_context *ctx,
struct acpi_whea_header *entry);
int apei_exec_write_register_value(struct apei_exec_context *ctx,
struct acpi_whea_header *entry);
int apei_exec_noop(struct apei_exec_context *ctx,
struct acpi_whea_header *entry);
int apei_exec_pre_map_gars(struct apei_exec_context *ctx);
int apei_exec_post_unmap_gars(struct apei_exec_context *ctx);
struct apei_resources {
struct list_head iomem;
struct list_head ioport;
};
static inline void apei_resources_init(struct apei_resources *resources)
{
INIT_LIST_HEAD(&resources->iomem);
INIT_LIST_HEAD(&resources->ioport);
}
void apei_resources_fini(struct apei_resources *resources);
int apei_resources_add(struct apei_resources *resources,
unsigned long start, unsigned long size,
bool iomem);
int apei_resources_sub(struct apei_resources *resources1,
struct apei_resources *resources2);
int apei_resources_request(struct apei_resources *resources,
const char *desc);
void apei_resources_release(struct apei_resources *resources);
int apei_exec_collect_resources(struct apei_exec_context *ctx,
struct apei_resources *resources);
struct dentry;
struct dentry *apei_get_debugfs_dir(void);
static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus)
{
if (estatus->raw_data_length)
return estatus->raw_data_offset + \
estatus->raw_data_length;
else
return sizeof(*estatus) + estatus->data_length;
}
void cper_estatus_print(const char *pfx,
const struct acpi_hest_generic_status *estatus);
int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus);
int cper_estatus_check(const struct acpi_hest_generic_status *estatus);
int apei_osc_setup(void);
#endif
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