diff options
Diffstat (limited to 'drivers/acpi/acpica/dbmethod.c')
| -rw-r--r-- | drivers/acpi/acpica/dbmethod.c | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/dbmethod.c b/drivers/acpi/acpica/dbmethod.c new file mode 100644 index 000000000000..01e5a71147fd --- /dev/null +++ b/drivers/acpi/acpica/dbmethod.c @@ -0,0 +1,369 @@ +/******************************************************************************* + * + * Module Name: dbmethod - Debug commands for control methods + * + ******************************************************************************/ + +/* + * Copyright (C) 2000 - 2015, 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") + +/******************************************************************************* + * + * 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); +} + +/******************************************************************************* + * + * 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 +} + +/******************************************************************************* + * + * 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); +} |