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linux/drivers/acpi/namespace/nsdump.c
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  These have been replaced by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

702 lines
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/******************************************************************************
*
* Module Name: nsdump - table dumping routines for debug
*
*****************************************************************************/
/*
* 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.
*/
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acparser.h>
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME ("nsdump")
/* Local prototypes */
#ifdef ACPI_OBSOLETE_FUNCTIONS
void
acpi_ns_dump_root_devices (
void);
static acpi_status
acpi_ns_dump_one_device (
acpi_handle obj_handle,
u32 level,
void *context,
void **return_value);
#endif
#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
/*******************************************************************************
*
* FUNCTION: acpi_ns_print_pathname
*
* PARAMETERS: num_segments - Number of ACPI name segments
* Pathname - The compressed (internal) path
*
* RETURN: None
*
* DESCRIPTION: Print an object's full namespace pathname
*
******************************************************************************/
void
acpi_ns_print_pathname (
u32 num_segments,
char *pathname)
{
ACPI_FUNCTION_NAME ("ns_print_pathname");
if (!(acpi_dbg_level & ACPI_LV_NAMES) || !(acpi_dbg_layer & ACPI_NAMESPACE)) {
return;
}
/* Print the entire name */
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, "["));
while (num_segments) {
acpi_os_printf ("%4.4s", pathname);
pathname += ACPI_NAME_SIZE;
num_segments--;
if (num_segments) {
acpi_os_printf (".");
}
}
acpi_os_printf ("]\n");
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_pathname
*
* PARAMETERS: Handle - Object
* Msg - Prefix message
* Level - Desired debug level
* Component - Caller's component ID
*
* RETURN: None
*
* DESCRIPTION: Print an object's full namespace pathname
* Manages allocation/freeing of a pathname buffer
*
******************************************************************************/
void
acpi_ns_dump_pathname (
acpi_handle handle,
char *msg,
u32 level,
u32 component)
{
ACPI_FUNCTION_TRACE ("ns_dump_pathname");
/* Do this only if the requested debug level and component are enabled */
if (!(acpi_dbg_level & level) || !(acpi_dbg_layer & component)) {
return_VOID;
}
/* Convert handle to a full pathname and print it (with supplied message) */
acpi_ns_print_node_pathname (handle, msg);
acpi_os_printf ("\n");
return_VOID;
}
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_one_object
*
* PARAMETERS: obj_handle - Node to be dumped
* Level - Nesting level of the handle
* Context - Passed into walk_namespace
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Dump a single Node
* This procedure is a user_function called by acpi_ns_walk_namespace.
*
******************************************************************************/
acpi_status
acpi_ns_dump_one_object (
acpi_handle obj_handle,
u32 level,
void *context,
void **return_value)
{
struct acpi_walk_info *info = (struct acpi_walk_info *) context;
struct acpi_namespace_node *this_node;
union acpi_operand_object *obj_desc = NULL;
acpi_object_type obj_type;
acpi_object_type type;
u32 bytes_to_dump;
u32 dbg_level;
u32 i;
ACPI_FUNCTION_NAME ("ns_dump_one_object");
/* Is output enabled? */
if (!(acpi_dbg_level & info->debug_level)) {
return (AE_OK);
}
if (!obj_handle) {
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Null object handle\n"));
return (AE_OK);
}
this_node = acpi_ns_map_handle_to_node (obj_handle);
type = this_node->type;
/* Check if the owner matches */
if ((info->owner_id != ACPI_OWNER_ID_MAX) &&
(info->owner_id != this_node->owner_id)) {
return (AE_OK);
}
if (!(info->display_type & ACPI_DISPLAY_SHORT)) {
/* Indent the object according to the level */
acpi_os_printf ("%2d%*s", (u32) level - 1, (int) level * 2, " ");
/* Check the node type and name */
if (type > ACPI_TYPE_LOCAL_MAX) {
ACPI_REPORT_WARNING (("Invalid ACPI Type %08X\n", type));
}
if (!acpi_ut_valid_acpi_name (this_node->name.integer)) {
ACPI_REPORT_WARNING (("Invalid ACPI Name %08X\n",
this_node->name.integer));
}
acpi_os_printf ("%4.4s", acpi_ut_get_node_name (this_node));
}
/*
* Now we can print out the pertinent information
*/
acpi_os_printf (" %-12s %p ",
acpi_ut_get_type_name (type), this_node);
dbg_level = acpi_dbg_level;
acpi_dbg_level = 0;
obj_desc = acpi_ns_get_attached_object (this_node);
acpi_dbg_level = dbg_level;
switch (info->display_type & ACPI_DISPLAY_MASK) {
case ACPI_DISPLAY_SUMMARY:
if (!obj_desc) {
/* No attached object, we are done */
acpi_os_printf ("\n");
return (AE_OK);
}
switch (type) {
case ACPI_TYPE_PROCESSOR:
acpi_os_printf ("ID %X Len %.4X Addr %p\n",
obj_desc->processor.proc_id, obj_desc->processor.length,
(char *) obj_desc->processor.address);
break;
case ACPI_TYPE_DEVICE:
acpi_os_printf ("Notify Object: %p\n", obj_desc);
break;
case ACPI_TYPE_METHOD:
acpi_os_printf ("Args %X Len %.4X Aml %p\n",
(u32) obj_desc->method.param_count,
obj_desc->method.aml_length, obj_desc->method.aml_start);
break;
case ACPI_TYPE_INTEGER:
acpi_os_printf ("= %8.8X%8.8X\n",
ACPI_FORMAT_UINT64 (obj_desc->integer.value));
break;
case ACPI_TYPE_PACKAGE:
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
acpi_os_printf ("Elements %.2X\n",
obj_desc->package.count);
}
else {
acpi_os_printf ("[Length not yet evaluated]\n");
}
break;
case ACPI_TYPE_BUFFER:
if (obj_desc->common.flags & AOPOBJ_DATA_VALID) {
acpi_os_printf ("Len %.2X",
obj_desc->buffer.length);
/* Dump some of the buffer */
if (obj_desc->buffer.length > 0) {
acpi_os_printf (" =");
for (i = 0; (i < obj_desc->buffer.length && i < 12); i++) {
acpi_os_printf (" %.2hX", obj_desc->buffer.pointer[i]);
}
}
acpi_os_printf ("\n");
}
else {
acpi_os_printf ("[Length not yet evaluated]\n");
}
break;
case ACPI_TYPE_STRING:
acpi_os_printf ("Len %.2X ", obj_desc->string.length);
acpi_ut_print_string (obj_desc->string.pointer, 32);
acpi_os_printf ("\n");
break;
case ACPI_TYPE_REGION:
acpi_os_printf ("[%s]",
acpi_ut_get_region_name (obj_desc->region.space_id));
if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
acpi_os_printf (" Addr %8.8X%8.8X Len %.4X\n",
ACPI_FORMAT_UINT64 (obj_desc->region.address),
obj_desc->region.length);
}
else {
acpi_os_printf (" [Address/Length not yet evaluated]\n");
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
acpi_os_printf ("[%s]\n",
acpi_ps_get_opcode_name (obj_desc->reference.opcode));
break;
case ACPI_TYPE_BUFFER_FIELD:
if (obj_desc->buffer_field.buffer_obj &&
obj_desc->buffer_field.buffer_obj->buffer.node) {
acpi_os_printf ("Buf [%4.4s]",
acpi_ut_get_node_name (obj_desc->buffer_field.buffer_obj->buffer.node));
}
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
acpi_os_printf ("Rgn [%4.4s]",
acpi_ut_get_node_name (obj_desc->common_field.region_obj->region.node));
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
acpi_os_printf ("Rgn [%4.4s] Bnk [%4.4s]",
acpi_ut_get_node_name (obj_desc->common_field.region_obj->region.node),
acpi_ut_get_node_name (obj_desc->bank_field.bank_obj->common_field.node));
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
acpi_os_printf ("Idx [%4.4s] Dat [%4.4s]",
acpi_ut_get_node_name (obj_desc->index_field.index_obj->common_field.node),
acpi_ut_get_node_name (obj_desc->index_field.data_obj->common_field.node));
break;
case ACPI_TYPE_LOCAL_ALIAS:
case ACPI_TYPE_LOCAL_METHOD_ALIAS:
acpi_os_printf ("Target %4.4s (%p)\n",
acpi_ut_get_node_name (obj_desc), obj_desc);
break;
default:
acpi_os_printf ("Object %p\n", obj_desc);
break;
}
/* Common field handling */
switch (type) {
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
acpi_os_printf (" Off %.3X Len %.2X Acc %.2hd\n",
(obj_desc->common_field.base_byte_offset * 8)
+ obj_desc->common_field.start_field_bit_offset,
obj_desc->common_field.bit_length,
obj_desc->common_field.access_byte_width);
break;
default:
break;
}
break;
case ACPI_DISPLAY_OBJECTS:
acpi_os_printf ("O:%p", obj_desc);
if (!obj_desc) {
/* No attached object, we are done */
acpi_os_printf ("\n");
return (AE_OK);
}
acpi_os_printf ("(R%d)", obj_desc->common.reference_count);
switch (type) {
case ACPI_TYPE_METHOD:
/* Name is a Method and its AML offset/length are set */
acpi_os_printf (" M:%p-%X\n", obj_desc->method.aml_start,
obj_desc->method.aml_length);
break;
case ACPI_TYPE_INTEGER:
acpi_os_printf (" I:%8.8X8.8%X\n",
ACPI_FORMAT_UINT64 (obj_desc->integer.value));
break;
case ACPI_TYPE_STRING:
acpi_os_printf (" S:%p-%X\n", obj_desc->string.pointer,
obj_desc->string.length);
break;
case ACPI_TYPE_BUFFER:
acpi_os_printf (" B:%p-%X\n", obj_desc->buffer.pointer,
obj_desc->buffer.length);
break;
default:
acpi_os_printf ("\n");
break;
}
break;
default:
acpi_os_printf ("\n");
break;
}
/* If debug turned off, done */
if (!(acpi_dbg_level & ACPI_LV_VALUES)) {
return (AE_OK);
}
/* If there is an attached object, display it */
dbg_level = acpi_dbg_level;
acpi_dbg_level = 0;
obj_desc = acpi_ns_get_attached_object (this_node);
acpi_dbg_level = dbg_level;
/* Dump attached objects */
while (obj_desc) {
obj_type = ACPI_TYPE_INVALID;
acpi_os_printf ("Attached Object %p: ", obj_desc);
/* Decode the type of attached object and dump the contents */
switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) {
case ACPI_DESC_TYPE_NAMED:
acpi_os_printf ("(Ptr to Node)\n");
bytes_to_dump = sizeof (struct acpi_namespace_node);
ACPI_DUMP_BUFFER (obj_desc, bytes_to_dump);
break;
case ACPI_DESC_TYPE_OPERAND:
obj_type = ACPI_GET_OBJECT_TYPE (obj_desc);
if (obj_type > ACPI_TYPE_LOCAL_MAX) {
acpi_os_printf ("(Ptr to ACPI Object type %X [UNKNOWN])\n",
obj_type);
bytes_to_dump = 32;
}
else {
acpi_os_printf ("(Ptr to ACPI Object type %X [%s])\n",
obj_type, acpi_ut_get_type_name (obj_type));
bytes_to_dump = sizeof (union acpi_operand_object);
}
ACPI_DUMP_BUFFER (obj_desc, bytes_to_dump);
break;
default:
break;
}
/* If value is NOT an internal object, we are done */
if (ACPI_GET_DESCRIPTOR_TYPE (obj_desc) != ACPI_DESC_TYPE_OPERAND) {
goto cleanup;
}
/*
* Valid object, get the pointer to next level, if any
*/
switch (obj_type) {
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
/*
* NOTE: takes advantage of common fields between string/buffer
*/
bytes_to_dump = obj_desc->string.length;
obj_desc = (void *) obj_desc->string.pointer;
acpi_os_printf ( "(Buffer/String pointer %p length %X)\n",
obj_desc, bytes_to_dump);
ACPI_DUMP_BUFFER (obj_desc, bytes_to_dump);
goto cleanup;
case ACPI_TYPE_BUFFER_FIELD:
obj_desc = (union acpi_operand_object *) obj_desc->buffer_field.buffer_obj;
break;
case ACPI_TYPE_PACKAGE:
obj_desc = (void *) obj_desc->package.elements;
break;
case ACPI_TYPE_METHOD:
obj_desc = (void *) obj_desc->method.aml_start;
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
obj_desc = (void *) obj_desc->field.region_obj;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
obj_desc = (void *) obj_desc->bank_field.region_obj;
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
obj_desc = (void *) obj_desc->index_field.index_obj;
break;
default:
goto cleanup;
}
obj_type = ACPI_TYPE_INVALID; /* Terminate loop after next pass */
}
cleanup:
acpi_os_printf ("\n");
return (AE_OK);
}
#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_objects
*
* PARAMETERS: Type - Object type to be dumped
* display_type - 0 or ACPI_DISPLAY_SUMMARY
* max_depth - Maximum depth of dump. Use ACPI_UINT32_MAX
* for an effectively unlimited depth.
* owner_id - Dump only objects owned by this ID. Use
* ACPI_UINT32_MAX to match all owners.
* start_handle - Where in namespace to start/end search
*
* RETURN: None
*
* DESCRIPTION: Dump typed objects within the loaded namespace.
* Uses acpi_ns_walk_namespace in conjunction with acpi_ns_dump_one_object.
*
******************************************************************************/
void
acpi_ns_dump_objects (
acpi_object_type type,
u8 display_type,
u32 max_depth,
acpi_owner_id owner_id,
acpi_handle start_handle)
{
struct acpi_walk_info info;
ACPI_FUNCTION_ENTRY ();
info.debug_level = ACPI_LV_TABLES;
info.owner_id = owner_id;
info.display_type = display_type;
(void) acpi_ns_walk_namespace (type, start_handle, max_depth,
ACPI_NS_WALK_NO_UNLOCK, acpi_ns_dump_one_object,
(void *) &info, NULL);
}
#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_entry
*
* PARAMETERS: Handle - Node to be dumped
* debug_level - Output level
*
* RETURN: None
*
* DESCRIPTION: Dump a single Node
*
******************************************************************************/
void
acpi_ns_dump_entry (
acpi_handle handle,
u32 debug_level)
{
struct acpi_walk_info info;
ACPI_FUNCTION_ENTRY ();
info.debug_level = debug_level;
info.owner_id = ACPI_OWNER_ID_MAX;
info.display_type = ACPI_DISPLAY_SUMMARY;
(void) acpi_ns_dump_one_object (handle, 1, &info, NULL);
}
#ifdef ACPI_ASL_COMPILER
/*******************************************************************************
*
* FUNCTION: acpi_ns_dump_tables
*
* PARAMETERS: search_base - Root of subtree to be dumped, or
* NS_ALL to dump the entire namespace
* max_depth - Maximum depth of dump. Use INT_MAX
* for an effectively unlimited depth.
*
* RETURN: None
*
* DESCRIPTION: Dump the name space, or a portion of it.
*
******************************************************************************/
void
acpi_ns_dump_tables (
acpi_handle search_base,
u32 max_depth)
{
acpi_handle search_handle = search_base;
ACPI_FUNCTION_TRACE ("ns_dump_tables");
if (!acpi_gbl_root_node) {
/*
* If the name space has not been initialized,
* there is nothing to dump.
*/
ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "namespace not initialized!\n"));
return_VOID;
}
if (ACPI_NS_ALL == search_base) {
/* Entire namespace */
search_handle = acpi_gbl_root_node;
ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "\\\n"));
}
acpi_ns_dump_objects (ACPI_TYPE_ANY, ACPI_DISPLAY_OBJECTS, max_depth,
ACPI_OWNER_ID_MAX, search_handle);
return_VOID;
}
#endif /* _ACPI_ASL_COMPILER */
#endif /* defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER) */
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