LXR linux/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#include <linux/acpi.h>
  11
  12struct apei_exec_context;
  13
  14typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
  15                                    struct acpi_whea_header *entry);
  16
  17#define APEI_EXEC_INS_ACCESS_REGISTER   0x0001
  18
  19struct apei_exec_ins_type {
  20        u32 flags;
  21        apei_exec_ins_func_t run;
  22};
  23
  24struct apei_exec_context {
  25        u32 ip;
  26        u64 value;
  27        u64 var1;
  28        u64 var2;
  29        u64 src_base;
  30        u64 dst_base;
  31        struct apei_exec_ins_type *ins_table;
  32        u32 instructions;
  33        struct acpi_whea_header *action_table;
  34        u32 entries;
  35};
  36
  37void apei_exec_ctx_init(struct apei_exec_context *ctx,
  38                        struct apei_exec_ins_type *ins_table,
  39                        u32 instructions,
  40                        struct acpi_whea_header *action_table,
  41                        u32 entries);
  42
  43static inline void apei_exec_ctx_set_input(struct apei_exec_context *ctx,
  44                                           u64 input)
  45{
  46        ctx->value = input;
  47}
  48
  49static inline u64 apei_exec_ctx_get_output(struct apei_exec_context *ctx)
  50{
  51        return ctx->value;
  52}
  53
  54int __apei_exec_run(struct apei_exec_context *ctx, u8 action, bool optional);
  55
  56static inline int apei_exec_run(struct apei_exec_context *ctx, u8 action)
  57{
  58        return __apei_exec_run(ctx, action, 0);
  59}
  60
  61/* It is optional whether the firmware provides the action */
  62static inline int apei_exec_run_optional(struct apei_exec_context *ctx, u8 action)
  63{
  64        return __apei_exec_run(ctx, action, 1);
  65}
  66
  67/* Common instruction implementation */
  68
  69/* IP has been set in instruction function */
  70#define APEI_EXEC_SET_IP        1
  71
  72int apei_map_generic_address(struct acpi_generic_address *reg);
  73
  74static inline void apei_unmap_generic_address(struct acpi_generic_address *reg)
  75{
  76        acpi_os_unmap_generic_address(reg);
  77}
  78
  79int apei_read(u64 *val, struct acpi_generic_address *reg);
  80int apei_write(u64 val, struct acpi_generic_address *reg);
  81
  82int __apei_exec_read_register(struct acpi_whea_header *entry, u64 *val);
  83int __apei_exec_write_register(struct acpi_whea_header *entry, u64 val);
  84int apei_exec_read_register(struct apei_exec_context *ctx,
  85                            struct acpi_whea_header *entry);
  86int apei_exec_read_register_value(struct apei_exec_context *ctx,
  87                                  struct acpi_whea_header *entry);
  88int apei_exec_write_register(struct apei_exec_context *ctx,
  89                             struct acpi_whea_header *entry);
  90int apei_exec_write_register_value(struct apei_exec_context *ctx,
  91                                   struct acpi_whea_header *entry);
  92int apei_exec_noop(struct apei_exec_context *ctx,
  93                   struct acpi_whea_header *entry);
  94int apei_exec_pre_map_gars(struct apei_exec_context *ctx);
  95int apei_exec_post_unmap_gars(struct apei_exec_context *ctx);
  96
  97struct apei_resources {
  98        struct list_head iomem;
  99        struct list_head ioport;
 100};
 101
 102static inline void apei_resources_init(struct apei_resources *resources)
 103{
 104        INIT_LIST_HEAD(&resources->iomem);
 105        INIT_LIST_HEAD(&resources->ioport);
 106}
 107
 108void apei_resources_fini(struct apei_resources *resources);
 109int apei_resources_add(struct apei_resources *resources,
 110                       unsigned long start, unsigned long size,
 111                       bool iomem);
 112int apei_resources_sub(struct apei_resources *resources1,
 113                       struct apei_resources *resources2);
 114int apei_resources_request(struct apei_resources *resources,
 115                           const char *desc);
 116void apei_resources_release(struct apei_resources *resources);
 117int apei_exec_collect_resources(struct apei_exec_context *ctx,
 118                                struct apei_resources *resources);
 119
 120struct dentry;
 121struct dentry *apei_get_debugfs_dir(void);
 122
 123#define apei_estatus_for_each_section(estatus, section)                 \
 124        for (section = (struct acpi_hest_generic_data *)(estatus + 1);  \
 125             (void *)section - (void *)estatus < estatus->data_length;  \
 126             section = (void *)(section+1) + section->error_data_length)
 127
 128static inline u32 cper_estatus_len(struct acpi_hest_generic_status *estatus)
 129{
 130        if (estatus->raw_data_length)
 131                return estatus->raw_data_offset + \
 132                        estatus->raw_data_length;
 133        else
 134                return sizeof(*estatus) + estatus->data_length;
 135}
 136
 137void cper_estatus_print(const char *pfx,
 138                        const struct acpi_hest_generic_status *estatus);
 139int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus);
 140int cper_estatus_check(const struct acpi_hest_generic_status *estatus);
 141
 142int apei_osc_setup(void);
 143#endif
 144