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OpenCloudOS-Kernel/drivers/acpi/acpica/dbmethod.c

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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
*
* Module Name: dbmethod - Debug commands for control methods
*
******************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acdebug.h"
#include "acparser.h"
#include "acpredef.h"
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbmethod")
/* Local prototypes */
static acpi_status
acpi_db_walk_for_execute(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value);
static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node);
/*******************************************************************************
*
* FUNCTION: acpi_db_set_method_breakpoint
*
* PARAMETERS: location - AML offset of breakpoint
* walk_state - Current walk info
* op - Current Op (from parse walk)
*
* RETURN: None
*
* DESCRIPTION: Set a breakpoint in a control method at the specified
* AML offset
*
******************************************************************************/
void
acpi_db_set_method_breakpoint(char *location,
struct acpi_walk_state *walk_state,
union acpi_parse_object *op)
{
u32 address;
u32 aml_offset;
if (!op) {
acpi_os_printf("There is no method currently executing\n");
return;
}
/* Get and verify the breakpoint address */
address = strtoul(location, NULL, 16);
aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
walk_state->parser_state.aml_start);
if (address <= aml_offset) {
acpi_os_printf("Breakpoint %X is beyond current address %X\n",
address, aml_offset);
}
/* Save breakpoint in current walk */
walk_state->user_breakpoint = address;
acpi_os_printf("Breakpoint set at AML offset %X\n", address);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_set_method_call_breakpoint
*
* PARAMETERS: op - Current Op (from parse walk)
*
* RETURN: None
*
* DESCRIPTION: Set a breakpoint in a control method at the specified
* AML offset
*
******************************************************************************/
void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op)
{
if (!op) {
acpi_os_printf("There is no method currently executing\n");
return;
}
acpi_gbl_step_to_next_call = TRUE;
}
/*******************************************************************************
*
* FUNCTION: acpi_db_set_method_data
*
* PARAMETERS: type_arg - L for local, A for argument
* index_arg - which one
* value_arg - Value to set.
*
* RETURN: None
*
* DESCRIPTION: Set a local or argument for the running control method.
* NOTE: only object supported is Number.
*
******************************************************************************/
void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg)
{
char type;
u32 index;
u32 value;
struct acpi_walk_state *walk_state;
union acpi_operand_object *obj_desc;
acpi_status status;
struct acpi_namespace_node *node;
/* Validate type_arg */
acpi_ut_strupr(type_arg);
type = type_arg[0];
if ((type != 'L') && (type != 'A') && (type != 'N')) {
acpi_os_printf("Invalid SET operand: %s\n", type_arg);
return;
}
value = strtoul(value_arg, NULL, 16);
if (type == 'N') {
node = acpi_db_convert_to_node(index_arg);
if (!node) {
return;
}
if (node->type != ACPI_TYPE_INTEGER) {
acpi_os_printf("Can only set Integer nodes\n");
return;
}
obj_desc = node->object;
obj_desc->integer.value = value;
return;
}
/* Get the index and value */
index = strtoul(index_arg, NULL, 16);
walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
if (!walk_state) {
acpi_os_printf("There is no method currently executing\n");
return;
}
/* Create and initialize the new object */
obj_desc = acpi_ut_create_integer_object((u64)value);
if (!obj_desc) {
acpi_os_printf("Could not create an internal object\n");
return;
}
/* Store the new object into the target */
switch (type) {
case 'A':
/* Set a method argument */
if (index > ACPI_METHOD_MAX_ARG) {
acpi_os_printf("Arg%u - Invalid argument name\n",
index);
goto cleanup;
}
status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG,
index, obj_desc,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc = walk_state->arguments[index].object;
acpi_os_printf("Arg%u: ", index);
acpi_db_display_internal_object(obj_desc, walk_state);
break;
case 'L':
/* Set a method local */
if (index > ACPI_METHOD_MAX_LOCAL) {
acpi_os_printf
("Local%u - Invalid local variable name\n", index);
goto cleanup;
}
status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL,
index, obj_desc,
walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
obj_desc = walk_state->local_variables[index].object;
acpi_os_printf("Local%u: ", index);
acpi_db_display_internal_object(obj_desc, walk_state);
break;
default:
break;
}
cleanup:
acpi_ut_remove_reference(obj_desc);
}
#ifdef ACPI_DISASSEMBLER
/*******************************************************************************
*
* FUNCTION: acpi_db_disassemble_aml
*
* PARAMETERS: statements - Number of statements to disassemble
* op - Current Op (from parse walk)
*
* RETURN: None
*
* DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
* of statements specified.
*
******************************************************************************/
void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op)
{
u32 num_statements = 8;
if (!op) {
acpi_os_printf("There is no method currently executing\n");
return;
}
if (statements) {
num_statements = strtoul(statements, NULL, 0);
}
acpi_dm_disassemble(NULL, op, num_statements);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_disassemble_method
*
* PARAMETERS: name - Name of control method
*
* RETURN: None
*
* DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
* of statements specified.
*
******************************************************************************/
acpi_status acpi_db_disassemble_method(char *name)
{
acpi_status status;
union acpi_parse_object *op;
struct acpi_walk_state *walk_state;
union acpi_operand_object *obj_desc;
struct acpi_namespace_node *method;
method = acpi_db_convert_to_node(name);
if (!method) {
return (AE_BAD_PARAMETER);
}
if (method->type != ACPI_TYPE_METHOD) {
ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method",
name, acpi_ut_get_type_name(method->type)));
return (AE_BAD_PARAMETER);
}
obj_desc = method->object;
op = acpi_ps_create_scope_op(obj_desc->method.aml_start);
if (!op) {
return (AE_NO_MEMORY);
}
/* Create and initialize a new walk state */
walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL);
if (!walk_state) {
return (AE_NO_MEMORY);
}
status = acpi_ds_init_aml_walk(walk_state, op, NULL,
obj_desc->method.aml_start,
obj_desc->method.aml_length, NULL,
ACPI_IMODE_LOAD_PASS1);
if (ACPI_FAILURE(status)) {
return (status);
}
status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
if (ACPI_FAILURE(status)) {
return (status);
}
walk_state->owner_id = obj_desc->method.owner_id;
/* Push start scope on scope stack and make it current */
status = acpi_ds_scope_stack_push(method, method->type, walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Parse the entire method AML including deferred operators */
walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE;
walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;
status = acpi_ps_parse_aml(walk_state);
if (ACPI_FAILURE(status)) {
return (status);
}
(void)acpi_dm_parse_deferred_ops(op);
/* Now we can disassemble the method */
acpi_gbl_dm_opt_verbose = FALSE;
acpi_dm_disassemble(NULL, op, 0);
acpi_gbl_dm_opt_verbose = TRUE;
acpi_ps_delete_parse_tree(op);
/* Method cleanup */
acpi_ns_delete_namespace_subtree(method);
acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
acpi_ut_release_owner_id(&obj_desc->method.owner_id);
return (AE_OK);
}
#endif
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_object
*
* PARAMETERS: node - Namespace node for the object
*
* RETURN: Status
*
* DESCRIPTION: Main execution function for the Evaluate/Execute/All debugger
* commands.
*
******************************************************************************/
static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node)
{
char *pathname;
u32 i;
struct acpi_device_info *obj_info;
struct acpi_object_list param_objects;
union acpi_object params[ACPI_METHOD_NUM_ARGS];
struct acpi_buffer return_obj;
acpi_status status;
pathname = acpi_ns_get_external_pathname(node);
if (!pathname) {
return (AE_OK);
}
/* Get the object info for number of method parameters */
status = acpi_get_object_info(node, &obj_info);
if (ACPI_FAILURE(status)) {
ACPI_FREE(pathname);
return (status);
}
param_objects.pointer = NULL;
param_objects.count = 0;
if (obj_info->type == ACPI_TYPE_METHOD) {
/* Setup default parameters */
for (i = 0; i < obj_info->param_count; i++) {
params[i].type = ACPI_TYPE_INTEGER;
params[i].integer.value = 1;
}
param_objects.pointer = params;
param_objects.count = obj_info->param_count;
}
ACPI_FREE(obj_info);
return_obj.pointer = NULL;
return_obj.length = ACPI_ALLOCATE_BUFFER;
/* Do the actual method execution */
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(node, NULL, &param_objects, &return_obj);
acpi_gbl_method_executing = FALSE;
acpi_os_printf("%-32s returned %s\n", pathname,
acpi_format_exception(status));
if (return_obj.length) {
acpi_os_printf("Evaluation of %s returned object %p, "
"external buffer length %X\n",
pathname, return_obj.pointer,
(u32)return_obj.length);
acpi_db_dump_external_object(return_obj.pointer, 1);
acpi_os_printf("\n");
}
ACPI_FREE(pathname);
/* Ignore status from method execution */
return (AE_OK);
/* Update count, check if we have executed enough methods */
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_execute
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Batch execution function. Evaluates all "predefined" objects --
* the nameseg begins with an underscore.
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_execute(acpi_handle obj_handle,
u32 nesting_level, void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
struct acpi_db_execute_walk *info =
(struct acpi_db_execute_walk *)context;
acpi_status status;
const union acpi_predefined_info *predefined;
predefined = acpi_ut_match_predefined_method(node->name.ascii);
if (!predefined) {
return (AE_OK);
}
if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
return (AE_OK);
}
acpi_db_evaluate_object(node);
/* Ignore status from object evaluation */
status = AE_OK;
/* Update count, check if we have executed enough methods */
info->count++;
if (info->count >= info->max_count) {
status = AE_CTRL_TERMINATE;
}
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_walk_for_execute_all
*
* PARAMETERS: Callback from walk_namespace
*
* RETURN: Status
*
* DESCRIPTION: Batch execution function. Evaluates all objects whose path ends
* with the nameseg "Info->NameSeg". Used for the "ALL" command.
*
******************************************************************************/
static acpi_status
acpi_db_walk_for_execute_all(acpi_handle obj_handle,
u32 nesting_level,
void *context, void **return_value)
{
struct acpi_namespace_node *node =
(struct acpi_namespace_node *)obj_handle;
struct acpi_db_execute_walk *info =
(struct acpi_db_execute_walk *)context;
acpi_status status;
if (!ACPI_COMPARE_NAMESEG(node->name.ascii, info->name_seg)) {
return (AE_OK);
}
if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
return (AE_OK);
}
/* Now evaluate the input object (node) */
acpi_db_evaluate_object(node);
/* Ignore status from method execution */
status = AE_OK;
/* Update count of executed methods/objects */
info->count++;
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_predefined_names
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Namespace batch execution. Execute predefined names in the
* namespace, up to the max count, if specified.
*
******************************************************************************/
void acpi_db_evaluate_predefined_names(void)
{
struct acpi_db_execute_walk info;
info.count = 0;
info.max_count = ACPI_UINT32_MAX;
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_walk_for_execute,
NULL, (void *)&info, NULL);
acpi_os_printf("Evaluated %u predefined names in the namespace\n",
info.count);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_evaluate_all
*
* PARAMETERS: none_acpi_gbl_db_method_info
*
* RETURN: None
*
* DESCRIPTION: Namespace batch execution. Implements the "ALL" command.
* Execute all namepaths whose final nameseg matches the
* input nameseg.
*
******************************************************************************/
void acpi_db_evaluate_all(char *name_seg)
{
struct acpi_db_execute_walk info;
info.count = 0;
info.max_count = ACPI_UINT32_MAX;
ACPI_COPY_NAMESEG(info.name_seg, name_seg);
info.name_seg[ACPI_NAMESEG_SIZE] = 0;
/* Search all nodes in namespace */
(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_db_walk_for_execute_all,
NULL, (void *)&info, NULL);
acpi_os_printf("Evaluated %u names in the namespace\n", info.count);
}
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