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linux/drivers/acpi/acpica/acglobal.h
Rafael J. Wysocki d3c4b6f64a ACPICA: Avoid evaluating methods too early during system resume 
ACPICA commit 0762982923f95eb652cf7ded27356b247c9774de

During wakeup from system-wide sleep states, acpi_get_sleep_type_data()
is called and it tries to get memory from the slab allocator in order
to evaluate a control method, but if KFENCE is enabled in the kernel,
the memory allocation attempt causes an IRQ work to be queued and a
self-IPI to be sent to the CPU running the code which requires the
memory controller to be ready, so if that happens too early in the
wakeup path, it doesn't work.

Prevent that from taking place by calling acpi_get_sleep_type_data()
for S0 upfront, when preparing to enter a given sleep state, and
saving the data obtained by it for later use during system wakeup.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214271
Reported-by: Reik Keutterling <spielkind@gmail.com>
Tested-by: Reik Keutterling <spielkind@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-10-05 15:53:32 +02:00

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/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/******************************************************************************
*
* Name: acglobal.h - Declarations for global variables
*
* Copyright (C) 2000 - 2021, Intel Corp.
*
*****************************************************************************/
#ifndef __ACGLOBAL_H__
#define __ACGLOBAL_H__
/*****************************************************************************
*
* Globals related to the incoming ACPI tables
*
****************************************************************************/
/* Master list of all ACPI tables that were found in the RSDT/XSDT */
ACPI_GLOBAL(struct acpi_table_list, acpi_gbl_root_table_list);
/* DSDT information. Used to check for DSDT corruption */
ACPI_GLOBAL(struct acpi_table_header *, acpi_gbl_DSDT);
ACPI_GLOBAL(struct acpi_table_header, acpi_gbl_original_dsdt_header);
ACPI_INIT_GLOBAL(u32, acpi_gbl_dsdt_index, ACPI_INVALID_TABLE_INDEX);
ACPI_INIT_GLOBAL(u32, acpi_gbl_facs_index, ACPI_INVALID_TABLE_INDEX);
ACPI_INIT_GLOBAL(u32, acpi_gbl_xfacs_index, ACPI_INVALID_TABLE_INDEX);
ACPI_INIT_GLOBAL(u32, acpi_gbl_fadt_index, ACPI_INVALID_TABLE_INDEX);
#if (!ACPI_REDUCED_HARDWARE)
ACPI_GLOBAL(struct acpi_table_facs *, acpi_gbl_FACS);
#endif /* !ACPI_REDUCED_HARDWARE */
/* These addresses are calculated from the FADT Event Block addresses */
ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1a_status);
ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1a_enable);
ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1b_status);
ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1b_enable);
#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
ACPI_GLOBAL(unsigned long, acpi_gbl_xgpe0_block_logical_address);
ACPI_GLOBAL(unsigned long, acpi_gbl_xgpe1_block_logical_address);
#endif /* ACPI_GPE_USE_LOGICAL_ADDRESSES */
/*
* Handle both ACPI 1.0 and ACPI 2.0+ Integer widths. The integer width is
* determined by the revision of the DSDT: If the DSDT revision is less than
* 2, use only the lower 32 bits of the internal 64-bit Integer.
*/
ACPI_GLOBAL(u8, acpi_gbl_integer_bit_width);
ACPI_GLOBAL(u8, acpi_gbl_integer_byte_width);
ACPI_GLOBAL(u8, acpi_gbl_integer_nybble_width);
/*****************************************************************************
*
* Mutual exclusion within the ACPICA subsystem
*
****************************************************************************/
/*
* Predefined mutex objects. This array contains the
* actual OS mutex handles, indexed by the local ACPI_MUTEX_HANDLEs.
* (The table maps local handles to the real OS handles)
*/
ACPI_GLOBAL(struct acpi_mutex_info, acpi_gbl_mutex_info[ACPI_NUM_MUTEX]);
/*
* Global lock mutex is an actual AML mutex object
* Global lock semaphore works in conjunction with the actual global lock
* Global lock spinlock is used for "pending" handshake
*/
ACPI_GLOBAL(union acpi_operand_object *, acpi_gbl_global_lock_mutex);
ACPI_GLOBAL(acpi_semaphore, acpi_gbl_global_lock_semaphore);
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_global_lock_pending_lock);
ACPI_GLOBAL(u16, acpi_gbl_global_lock_handle);
ACPI_GLOBAL(u8, acpi_gbl_global_lock_acquired);
ACPI_GLOBAL(u8, acpi_gbl_global_lock_present);
ACPI_GLOBAL(u8, acpi_gbl_global_lock_pending);
/*
* Spinlocks are used for interfaces that can be possibly called at
* interrupt level
*/
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_gpe_lock); /* For GPE data structs and registers */
ACPI_GLOBAL(acpi_raw_spinlock, acpi_gbl_hardware_lock); /* For ACPI H/W except GPE registers */
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_reference_count_lock);
/* Mutex for _OSI support */
ACPI_GLOBAL(acpi_mutex, acpi_gbl_osi_mutex);
/* Reader/Writer lock is used for namespace walk and dynamic table unload */
ACPI_GLOBAL(struct acpi_rw_lock, acpi_gbl_namespace_rw_lock);
/*****************************************************************************
*
* Miscellaneous globals
*
****************************************************************************/
/* Object caches */
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_namespace_cache);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_state_cache);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_ps_node_cache);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_ps_node_ext_cache);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_operand_cache);
/* System */
ACPI_INIT_GLOBAL(u32, acpi_gbl_startup_flags, 0);
ACPI_INIT_GLOBAL(u8, acpi_gbl_shutdown, TRUE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_early_initialization, TRUE);
/* Global handlers */
ACPI_GLOBAL(struct acpi_global_notify_handler, acpi_gbl_global_notify[2]);
ACPI_GLOBAL(acpi_exception_handler, acpi_gbl_exception_handler);
ACPI_GLOBAL(acpi_init_handler, acpi_gbl_init_handler);
ACPI_GLOBAL(acpi_table_handler, acpi_gbl_table_handler);
ACPI_GLOBAL(void *, acpi_gbl_table_handler_context);
ACPI_GLOBAL(acpi_interface_handler, acpi_gbl_interface_handler);
ACPI_GLOBAL(struct acpi_sci_handler_info *, acpi_gbl_sci_handler_list);
/* Owner ID support */
ACPI_GLOBAL(u32, acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS]);
ACPI_GLOBAL(u8, acpi_gbl_last_owner_id_index);
ACPI_GLOBAL(u8, acpi_gbl_next_owner_id_offset);
/* Initialization sequencing */
ACPI_INIT_GLOBAL(u8, acpi_gbl_namespace_initialized, FALSE);
/* Miscellaneous */
ACPI_GLOBAL(u32, acpi_gbl_original_mode);
ACPI_GLOBAL(u32, acpi_gbl_ns_lookup_count);
ACPI_GLOBAL(u32, acpi_gbl_ps_find_count);
ACPI_GLOBAL(u16, acpi_gbl_pm1_enable_register_save);
ACPI_GLOBAL(u8, acpi_gbl_debugger_configuration);
ACPI_GLOBAL(u8, acpi_gbl_step_to_next_call);
ACPI_GLOBAL(u8, acpi_gbl_acpi_hardware_present);
ACPI_GLOBAL(u8, acpi_gbl_events_initialized);
ACPI_GLOBAL(struct acpi_interface_info *, acpi_gbl_supported_interfaces);
ACPI_GLOBAL(struct acpi_address_range *,
acpi_gbl_address_range_list[ACPI_ADDRESS_RANGE_MAX]);
/* Other miscellaneous, declared and initialized in utglobal */
extern const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT];
extern const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS];
extern const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS];
extern const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS];
extern const char acpi_gbl_lower_hex_digits[];
extern const char acpi_gbl_upper_hex_digits[];
extern const struct acpi_opcode_info acpi_gbl_aml_op_info[AML_NUM_OPCODES];
/* Lists for tracking memory allocations (debug only) */
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
ACPI_GLOBAL(struct acpi_memory_list *, acpi_gbl_global_list);
ACPI_GLOBAL(struct acpi_memory_list *, acpi_gbl_ns_node_list);
ACPI_GLOBAL(u8, acpi_gbl_display_final_mem_stats);
ACPI_GLOBAL(u8, acpi_gbl_disable_mem_tracking);
ACPI_GLOBAL(u8, acpi_gbl_verbose_leak_dump);
#endif
/*****************************************************************************
*
* ACPI Namespace
*
****************************************************************************/
#define NUM_PREDEFINED_NAMES 10
ACPI_GLOBAL(struct acpi_namespace_node, acpi_gbl_root_node_struct);
ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_root_node);
ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_fadt_gpe_device);
extern const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES];
extern const struct acpi_predefined_names
acpi_gbl_pre_defined_names[NUM_PREDEFINED_NAMES];
#ifdef ACPI_DEBUG_OUTPUT
ACPI_GLOBAL(u32, acpi_gbl_current_node_count);
ACPI_GLOBAL(u32, acpi_gbl_current_node_size);
ACPI_GLOBAL(u32, acpi_gbl_max_concurrent_node_count);
ACPI_GLOBAL(acpi_size *, acpi_gbl_entry_stack_pointer);
ACPI_GLOBAL(acpi_size *, acpi_gbl_lowest_stack_pointer);
ACPI_GLOBAL(u32, acpi_gbl_deepest_nesting);
ACPI_INIT_GLOBAL(u32, acpi_gbl_nesting_level, 0);
#endif
/*****************************************************************************
*
* Interpreter/Parser globals
*
****************************************************************************/
/* Control method single step flag */
ACPI_GLOBAL(u8, acpi_gbl_cm_single_step);
ACPI_GLOBAL(struct acpi_thread_state *, acpi_gbl_current_walk_list);
ACPI_INIT_GLOBAL(union acpi_parse_object, *acpi_gbl_current_scope, NULL);
/* ASL/ASL+ converter */
ACPI_INIT_GLOBAL(u8, acpi_gbl_capture_comments, FALSE);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_last_list_head, NULL);
/*****************************************************************************
*
* Hardware globals
*
****************************************************************************/
extern struct acpi_bit_register_info
acpi_gbl_bit_register_info[ACPI_NUM_BITREG];
ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a);
ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b);
ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a_s0);
ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b_s0);
/*****************************************************************************
*
* Event and GPE globals
*
****************************************************************************/
#if (!ACPI_REDUCED_HARDWARE)
ACPI_GLOBAL(u8, acpi_gbl_all_gpes_initialized);
ACPI_GLOBAL(struct acpi_gpe_xrupt_info *, acpi_gbl_gpe_xrupt_list_head);
ACPI_GLOBAL(struct acpi_gpe_block_info *,
acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS]);
ACPI_GLOBAL(acpi_gbl_event_handler, acpi_gbl_global_event_handler);
ACPI_GLOBAL(void *, acpi_gbl_global_event_handler_context);
ACPI_GLOBAL(struct acpi_fixed_event_handler,
acpi_gbl_fixed_event_handlers[ACPI_NUM_FIXED_EVENTS]);
extern struct acpi_fixed_event_info
acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS];
#endif /* !ACPI_REDUCED_HARDWARE */
/*****************************************************************************
*
* Debug support
*
****************************************************************************/
/* Event counters */
ACPI_GLOBAL(u32, acpi_method_count);
ACPI_GLOBAL(u32, acpi_gpe_count);
ACPI_GLOBAL(u32, acpi_sci_count);
ACPI_GLOBAL(u32, acpi_fixed_event_count[ACPI_NUM_FIXED_EVENTS]);
/* Dynamic control method tracing mechanism */
ACPI_GLOBAL(u32, acpi_gbl_original_dbg_level);
ACPI_GLOBAL(u32, acpi_gbl_original_dbg_layer);
/*****************************************************************************
*
* Debugger and Disassembler
*
****************************************************************************/
ACPI_INIT_GLOBAL(u8, acpi_gbl_db_output_flags, ACPI_DB_CONSOLE_OUTPUT);
#ifdef ACPI_DISASSEMBLER
/* Do not disassemble buffers to resource descriptors */
ACPI_INIT_GLOBAL(u8, acpi_gbl_no_resource_disassembly, FALSE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_ignore_noop_operator, FALSE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_cstyle_disassembly, TRUE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_force_aml_disassembly, FALSE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_dm_opt_verbose, TRUE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_dm_emit_external_opcodes, FALSE);
ACPI_INIT_GLOBAL(u8, acpi_gbl_do_disassembler_optimizations, TRUE);
ACPI_INIT_GLOBAL(ACPI_PARSE_OBJECT_LIST, *acpi_gbl_temp_list_head, NULL);
ACPI_GLOBAL(u8, acpi_gbl_dm_opt_disasm);
ACPI_GLOBAL(u8, acpi_gbl_dm_opt_listing);
ACPI_GLOBAL(u8, acpi_gbl_num_external_methods);
ACPI_GLOBAL(u32, acpi_gbl_resolved_external_methods);
ACPI_GLOBAL(struct acpi_external_list *, acpi_gbl_external_list);
ACPI_GLOBAL(struct acpi_external_file *, acpi_gbl_external_file_list);
#endif
#ifdef ACPI_DEBUGGER
ACPI_INIT_GLOBAL(u8, acpi_gbl_abort_method, FALSE);
ACPI_INIT_GLOBAL(acpi_thread_id, acpi_gbl_db_thread_id, ACPI_INVALID_THREAD_ID);
ACPI_INIT_GLOBAL(u32, acpi_gbl_next_cmd_num, 1);
ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_ini_methods);
ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_region_support);
ACPI_GLOBAL(u8, acpi_gbl_db_output_to_file);
ACPI_GLOBAL(char *, acpi_gbl_db_buffer);
ACPI_GLOBAL(char *, acpi_gbl_db_filename);
ACPI_GLOBAL(u32, acpi_gbl_db_debug_level);
ACPI_GLOBAL(u32, acpi_gbl_db_console_debug_level);
ACPI_GLOBAL(struct acpi_namespace_node *, acpi_gbl_db_scope_node);
ACPI_GLOBAL(u8, acpi_gbl_db_terminate_loop);
ACPI_GLOBAL(u8, acpi_gbl_db_threads_terminated);
ACPI_GLOBAL(char *, acpi_gbl_db_args[ACPI_DEBUGGER_MAX_ARGS]);
ACPI_GLOBAL(acpi_object_type, acpi_gbl_db_arg_types[ACPI_DEBUGGER_MAX_ARGS]);
/* These buffers should all be the same size */
ACPI_GLOBAL(char, acpi_gbl_db_parsed_buf[ACPI_DB_LINE_BUFFER_SIZE]);
ACPI_GLOBAL(char, acpi_gbl_db_scope_buf[ACPI_DB_LINE_BUFFER_SIZE]);
ACPI_GLOBAL(char, acpi_gbl_db_debug_filename[ACPI_DB_LINE_BUFFER_SIZE]);
/* Statistics globals */
ACPI_GLOBAL(u16, acpi_gbl_obj_type_count[ACPI_TOTAL_TYPES]);
ACPI_GLOBAL(u16, acpi_gbl_node_type_count[ACPI_TOTAL_TYPES]);
ACPI_GLOBAL(u16, acpi_gbl_obj_type_count_misc);
ACPI_GLOBAL(u16, acpi_gbl_node_type_count_misc);
ACPI_GLOBAL(u32, acpi_gbl_num_nodes);
ACPI_GLOBAL(u32, acpi_gbl_num_objects);
#endif /* ACPI_DEBUGGER */
#if defined (ACPI_DISASSEMBLER) || defined (ACPI_ASL_COMPILER)
ACPI_GLOBAL(const char, *acpi_gbl_pld_panel_list[]);
ACPI_GLOBAL(const char, *acpi_gbl_pld_vertical_position_list[]);
ACPI_GLOBAL(const char, *acpi_gbl_pld_horizontal_position_list[]);
ACPI_GLOBAL(const char, *acpi_gbl_pld_shape_list[]);
ACPI_INIT_GLOBAL(u8, acpi_gbl_disasm_flag, FALSE);
#endif
/*****************************************************************************
*
* ACPICA application-specific globals
*
****************************************************************************/
/* ASL-to-ASL+ conversion utility (implemented within the iASL compiler) */
#ifdef ACPI_ASL_COMPILER
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_inline_comment, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_end_node_comment, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_open_brace_comment, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_close_brace_comment, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_root_filename, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_filename, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_parent_filename, NULL);
ACPI_INIT_GLOBAL(char *, acpi_gbl_current_include_filename, NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_def_blk_comment_list_head,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_def_blk_comment_list_tail,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_reg_comment_list_head,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_reg_comment_list_tail,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_inc_comment_list_head,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_inc_comment_list_tail,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_end_blk_comment_list_head,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_node, *acpi_gbl_end_blk_comment_list_tail,
NULL);
ACPI_INIT_GLOBAL(struct acpi_comment_addr_node,
*acpi_gbl_comment_addr_list_head, NULL);
ACPI_INIT_GLOBAL(struct acpi_file_node, *acpi_gbl_file_tree_root, NULL);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_reg_comment_cache);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_comment_addr_cache);
ACPI_GLOBAL(acpi_cache_t *, acpi_gbl_file_cache);
ACPI_INIT_GLOBAL(u8, acpi_gbl_debug_asl_conversion, FALSE);
ACPI_INIT_GLOBAL(ACPI_FILE, acpi_gbl_conv_debug_file, NULL);
ACPI_GLOBAL(char, acpi_gbl_table_sig[4]);
#endif
#ifdef ACPI_APPLICATION
ACPI_INIT_GLOBAL(ACPI_FILE, acpi_gbl_debug_file, NULL);
ACPI_INIT_GLOBAL(ACPI_FILE, acpi_gbl_output_file, NULL);
ACPI_INIT_GLOBAL(u8, acpi_gbl_debug_timeout, FALSE);
/* Print buffer */
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_print_lock); /* For print buffer */
ACPI_GLOBAL(char, acpi_gbl_print_buffer[1024]);
#endif /* ACPI_APPLICATION */
#endif /* __ACGLOBAL_H__ */
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