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linux/include/acpi/acstruct.h
Robert Moore f9f4601f33 ACPICA 20050708 from Bob Moore <robert.moore@intel.com> 
The use of the CPU stack in the debug version of the
subsystem has been considerably reduced.  Previously, a
debug structure was declared in every function that used
the debug macros.  This structure has been removed in
favor of declaring the individual elements as parameters
to the debug functions.  This reduces the cumulative stack
use during nested execution of ACPI function calls at the
cost of a small increase in the code size of the debug
version of the subsystem.  With assistance from Alexey
Starikovskiy and Len Brown.

Added the ACPI_GET_FUNCTION_NAME macro to enable the
compiler-dependent headers to define a macro that will
return the current function name at runtime (such as
__FUNCTION__ or _func_, etc.) The function name is used
by the debug trace output.  If ACPI_GET_FUNCTION_NAME
is not defined in the compiler-dependent header, the
function name is saved on the CPU stack (one pointer per
function.) This mechanism is used because apparently there
exists no standard ANSI-C defined macro that that returns
the function name.

Alexey Starikovskiy redesigned and reimplemented the
"Owner ID" mechanism used to track namespace objects
created/deleted by ACPI tables and control method
execution.  A bitmap is now used to allocate and free the
IDs, thus solving the wraparound problem present in the
previous implementation.  The size of the namespace node
descriptor was reduced by 2 bytes as a result.

Removed the UINT32_BIT and UINT16_BIT types that were used
for the bitfield flag definitions within the headers for
the predefined ACPI tables.  These have been replaced by
UINT8_BIT in order to increase the code portability of
the subsystem.  If the use of UINT8 remains a problem,
we may be forced to eliminate bitfields entirely because
of a lack of portability.

Alexey Starikovksiy enhanced the performance of
acpi_ut_update_object_reference.  This is a frequently used
function and this improvement increases the performance
of the entire subsystem.

Alexey Starikovskiy fixed several possible memory leaks
and the inverse - premature object deletion.

Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-14 00:42:23 -04:00

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/******************************************************************************
*
* Name: acstruct.h - Internal structs
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2005, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#ifndef __ACSTRUCT_H__
#define __ACSTRUCT_H__
/*****************************************************************************
*
* Tree walking typedefs and structs
*
****************************************************************************/
/*
* Walk state - current state of a parse tree walk. Used for both a leisurely stroll through
* the tree (for whatever reason), and for control method execution.
*/
#define ACPI_NEXT_OP_DOWNWARD 1
#define ACPI_NEXT_OP_UPWARD 2
#define ACPI_WALK_NON_METHOD 0
#define ACPI_WALK_METHOD 1
#define ACPI_WALK_METHOD_RESTART 2
#define ACPI_WALK_CONST_REQUIRED 3
#define ACPI_WALK_CONST_OPTIONAL 4
struct acpi_walk_state
{
u8 data_type; /* To differentiate various internal objs MUST BE FIRST!*/\
u8 walk_type;
acpi_owner_id owner_id; /* Owner of objects created during the walk */
u8 last_predicate; /* Result of last predicate */
u8 current_result; /* */
u8 next_op_info; /* Info about next_op */
u8 num_operands; /* Stack pointer for Operands[] array */
u8 return_used;
u16 opcode; /* Current AML opcode */
u8 scope_depth;
u8 pass_number; /* Parse pass during table load */
u32 arg_count; /* push for fixed or var args */
u32 aml_offset;
u32 arg_types;
u32 method_breakpoint; /* For single stepping */
u32 user_breakpoint; /* User AML breakpoint */
u32 parse_flags;
u32 prev_arg_types;
u8 *aml_last_while;
struct acpi_namespace_node arguments[ACPI_METHOD_NUM_ARGS]; /* Control method arguments */
union acpi_operand_object **caller_return_desc;
union acpi_generic_state *control_state; /* List of control states (nested IFs) */
struct acpi_namespace_node *deferred_node; /* Used when executing deferred opcodes */
struct acpi_gpe_event_info *gpe_event_info; /* Info for GPE (_Lxx/_Exx methods only */
union acpi_operand_object *implicit_return_obj;
struct acpi_namespace_node local_variables[ACPI_METHOD_NUM_LOCALS]; /* Control method locals */
struct acpi_namespace_node *method_call_node; /* Called method Node*/
union acpi_parse_object *method_call_op; /* method_call Op if running a method */
union acpi_operand_object *method_desc; /* Method descriptor if running a method */
struct acpi_namespace_node *method_node; /* Method node if running a method. */
union acpi_parse_object *op; /* Current parser op */
union acpi_operand_object *operands[ACPI_OBJ_NUM_OPERANDS+1]; /* Operands passed to the interpreter (+1 for NULL terminator) */
const struct acpi_opcode_info *op_info; /* Info on current opcode */
union acpi_parse_object *origin; /* Start of walk [Obsolete] */
union acpi_operand_object **params;
struct acpi_parse_state parser_state; /* Current state of parser */
union acpi_operand_object *result_obj;
union acpi_generic_state *results; /* Stack of accumulated results */
union acpi_operand_object *return_desc; /* Return object, if any */
union acpi_generic_state *scope_info; /* Stack of nested scopes */
union acpi_parse_object *prev_op; /* Last op that was processed */
union acpi_parse_object *next_op; /* next op to be processed */
acpi_parse_downwards descending_callback;
acpi_parse_upwards ascending_callback;
struct acpi_thread_state *thread;
struct acpi_walk_state *next; /* Next walk_state in list */
};
/* Info used by acpi_ps_init_objects */
struct acpi_init_walk_info
{
u16 method_count;
u16 device_count;
u16 op_region_count;
u16 field_count;
u16 buffer_count;
u16 package_count;
u16 op_region_init;
u16 field_init;
u16 buffer_init;
u16 package_init;
u16 object_count;
struct acpi_table_desc *table_desc;
};
/* Info used by acpi_ns_initialize_devices */
struct acpi_device_walk_info
{
u16 device_count;
u16 num_STA;
u16 num_INI;
struct acpi_table_desc *table_desc;
};
/* TBD: [Restructure] Merge with struct above */
struct acpi_walk_info
{
u32 debug_level;
acpi_owner_id owner_id;
u8 display_type;
};
/* Display Types */
#define ACPI_DISPLAY_SUMMARY (u8) 0
#define ACPI_DISPLAY_OBJECTS (u8) 1
#define ACPI_DISPLAY_MASK (u8) 1
#define ACPI_DISPLAY_SHORT (u8) 2
struct acpi_get_devices_info
{
acpi_walk_callback user_function;
void *context;
char *hid;
};
union acpi_aml_operands
{
union acpi_operand_object *operands[7];
struct
{
struct acpi_object_integer *type;
struct acpi_object_integer *code;
struct acpi_object_integer *argument;
} fatal;
struct
{
union acpi_operand_object *source;
struct acpi_object_integer *index;
union acpi_operand_object *target;
} index;
struct
{
union acpi_operand_object *source;
struct acpi_object_integer *index;
struct acpi_object_integer *length;
union acpi_operand_object *target;
} mid;
};
/* Internal method parameter list */
struct acpi_parameter_info
{
struct acpi_namespace_node *node;
union acpi_operand_object **parameters;
union acpi_operand_object *return_object;
u8 parameter_type;
u8 return_object_type;
};
/* Types for parameter_type above */
#define ACPI_PARAM_ARGS 0
#define ACPI_PARAM_GPE 1
#endif
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