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Release 4.11 drivers/acpi/acpica/dbmethod.c

/*******************************************************************************
 *
 * Module Name: dbmethod - Debug commands for control methods
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2017, Intel Corp.
 * 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 "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);

/*******************************************************************************
 *
 * 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); }

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/******************************************************************************* * * 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; }

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/******************************************************************************* * * 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); }

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/******************************************************************************* * * 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); } #ifdef ACPI_DISASSEMBLER acpi_dm_disassemble(NULL, op, num_statements); #endif }

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/******************************************************************************* * * 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); 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); #ifdef ACPI_DISASSEMBLER (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; #endif 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); }

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/******************************************************************************* * * FUNCTION: acpi_db_walk_for_execute * * PARAMETERS: Callback from walk_namespace * * RETURN: Status * * DESCRIPTION: Batch execution module. Currently only executes predefined * ACPI names. * ******************************************************************************/
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; struct acpi_buffer return_obj; acpi_status status; char *pathname; u32 i; struct acpi_device_info *obj_info; struct acpi_object_list param_objects; union acpi_object params[ACPI_METHOD_NUM_ARGS]; 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); } 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(obj_handle, &obj_info); if (ACPI_FAILURE(status)) { 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_os_printf("%-32s returned %s\n", pathname, acpi_format_exception(status)); acpi_gbl_method_executing = FALSE; ACPI_FREE(pathname); /* Ignore status from method execution */ 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); }

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/******************************************************************************* * * 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); }

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