diff options
Diffstat (limited to 'drivers/acpi/acpica/dsobject.c')
| -rw-r--r-- | drivers/acpi/acpica/dsobject.c | 103 |
1 files changed, 70 insertions, 33 deletions
diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c index dab3f48f0b4..a1e7e6b6fcf 100644 --- a/drivers/acpi/acpica/dsobject.c +++ b/drivers/acpi/acpica/dsobject.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2008, Intel Corp. + * Copyright (C) 2000 - 2014, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -64,7 +64,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, * FUNCTION: acpi_ds_build_internal_object * * PARAMETERS: walk_state - Current walk state - * Op - Parser object to be translated + * op - Parser object to be translated * obj_desc_ptr - Where the ACPI internal object is returned * * RETURN: Status @@ -81,6 +81,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, { union acpi_operand_object *obj_desc; acpi_status status; + acpi_object_type type; ACPI_FUNCTION_TRACE(ds_build_internal_object); @@ -172,7 +173,20 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, return_ACPI_STATUS(status); } - switch (op->common.node->type) { + /* + * Special handling for Alias objects. We need to setup the type + * and the Op->Common.Node to point to the Alias target. Note, + * Alias has at most one level of indirection internally. + */ + type = op->common.node->type; + if (type == ACPI_TYPE_LOCAL_ALIAS) { + type = obj_desc->common.type; + op->common.node = + ACPI_CAST_PTR(struct acpi_namespace_node, + op->common.node->object); + } + + switch (type) { /* * For these types, we need the actual node, not the subobject. * However, the subobject did not get an extra reference count above. @@ -226,7 +240,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, return_ACPI_STATUS(status); } - exit: +exit: *obj_desc_ptr = obj_desc; return_ACPI_STATUS(status); } @@ -236,7 +250,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, * FUNCTION: acpi_ds_build_internal_buffer_obj * * PARAMETERS: walk_state - Current walk state - * Op - Parser object to be translated + * op - Parser object to be translated * buffer_length - Length of the buffer * obj_desc_ptr - Where the ACPI internal object is returned * @@ -279,7 +293,7 @@ acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state, /* * Second arg is the buffer data (optional) byte_list can be either - * individual bytes or a string initializer. In either case, a + * individual bytes or a string initializer. In either case, a * byte_list appears in the AML. */ arg = op->common.value.arg; /* skip first arg */ @@ -288,7 +302,7 @@ acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state, if (byte_list) { if (byte_list->common.aml_opcode != AML_INT_BYTELIST_OP) { ACPI_ERROR((AE_INFO, - "Expecting bytelist, got AML opcode %X in op %p", + "Expecting bytelist, found AML opcode 0x%X in op %p", byte_list->common.aml_opcode, byte_list)); acpi_ut_remove_reference(obj_desc); @@ -340,7 +354,7 @@ acpi_ds_build_internal_buffer_obj(struct acpi_walk_state *walk_state, * FUNCTION: acpi_ds_build_internal_package_obj * * PARAMETERS: walk_state - Current walk state - * Op - Parser object to be translated + * op - Parser object to be translated * element_count - Number of elements in the package - this is * the num_elements argument to Package() * obj_desc_ptr - Where the ACPI internal object is returned @@ -374,7 +388,7 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state, union acpi_parse_object *parent; union acpi_operand_object *obj_desc = NULL; acpi_status status = AE_OK; - unsigned i; + u32 i; u16 index; u16 reference_count; @@ -482,14 +496,27 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state, if (arg) { /* * num_elements was exhausted, but there are remaining elements in the - * package_list. + * package_list. Truncate the package to num_elements. * * Note: technically, this is an error, from ACPI spec: "It is an error * for NumElements to be less than the number of elements in the - * PackageList". However, for now, we just print an error message and - * no exception is returned. + * PackageList". However, we just print a message and + * no exception is returned. This provides Windows compatibility. Some + * BIOSs will alter the num_elements on the fly, creating this type + * of ill-formed package object. */ while (arg) { + /* + * We must delete any package elements that were created earlier + * and are not going to be used because of the package truncation. + */ + if (arg->common.node) { + acpi_ut_remove_reference(ACPI_CAST_PTR + (union + acpi_operand_object, + arg->common.node)); + arg->common.node = NULL; + } /* Find out how many elements there really are */ @@ -497,16 +524,16 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state, arg = arg->common.next; } - ACPI_WARNING((AE_INFO, - "Package List length (%X) larger than NumElements count (%X), truncated\n", - i, element_count)); + ACPI_INFO((AE_INFO, + "Actual Package length (%u) is larger than NumElements field (%u), truncated", + i, element_count)); } else if (i < element_count) { /* * Arg list (elements) was exhausted, but we did not reach num_elements count. * Note: this is not an error, the package is padded out with NULLs. */ ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Package List length (%X) smaller than NumElements count (%X), padded with null elements\n", + "Package List length (%u) smaller than NumElements count (%u), padded with null elements\n", i, element_count)); } @@ -520,8 +547,8 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state, * FUNCTION: acpi_ds_create_node * * PARAMETERS: walk_state - Current walk state - * Node - NS Node to be initialized - * Op - Parser object to be translated + * node - NS Node to be initialized + * op - Parser object to be translated * * RETURN: Status * @@ -541,7 +568,7 @@ acpi_ds_create_node(struct acpi_walk_state *walk_state, /* * Because of the execution pass through the non-control-method - * parts of the table, we can arrive here twice. Only init + * parts of the table, we can arrive here twice. Only init * the named object node the first time through */ if (acpi_ns_get_attached_object(node)) { @@ -584,14 +611,14 @@ acpi_ds_create_node(struct acpi_walk_state *walk_state, * FUNCTION: acpi_ds_init_object_from_op * * PARAMETERS: walk_state - Current walk state - * Op - Parser op used to init the internal object - * Opcode - AML opcode associated with the object + * op - Parser op used to init the internal object + * opcode - AML opcode associated with the object * ret_obj_desc - Namespace object to be initialized * * RETURN: Status * * DESCRIPTION: Initialize a namespace object from a parser Op and its - * associated arguments. The namespace object is a more compact + * associated arguments. The namespace object is a more compact * representation of the Op and its arguments. * ******************************************************************************/ @@ -621,7 +648,6 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, switch (obj_desc->common.type) { case ACPI_TYPE_BUFFER: - /* * Defer evaluation of Buffer term_arg operand */ @@ -633,7 +659,6 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, break; case ACPI_TYPE_PACKAGE: - /* * Defer evaluation of Package term_arg operand */ @@ -671,12 +696,12 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, case AML_ONES_OP: - obj_desc->integer.value = ACPI_INTEGER_MAX; + obj_desc->integer.value = ACPI_UINT64_MAX; /* Truncate value if we are executing from a 32-bit ACPI table */ #ifndef ACPI_NO_METHOD_EXECUTION - acpi_ex_truncate_for32bit_table(obj_desc); + (void)acpi_ex_truncate_for32bit_table(obj_desc); #endif break; @@ -688,7 +713,7 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, default: ACPI_ERROR((AE_INFO, - "Unknown constant opcode %X", + "Unknown constant opcode 0x%X", opcode)); status = AE_AML_OPERAND_TYPE; break; @@ -698,13 +723,24 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, case AML_TYPE_LITERAL: obj_desc->integer.value = op->common.value.integer; + #ifndef ACPI_NO_METHOD_EXECUTION - acpi_ex_truncate_for32bit_table(obj_desc); + if (acpi_ex_truncate_for32bit_table(obj_desc)) { + + /* Warn if we found a 64-bit constant in a 32-bit table */ + + ACPI_WARNING((AE_INFO, + "Truncated 64-bit constant found in 32-bit table: %8.8X%8.8X => %8.8X", + ACPI_FORMAT_UINT64(op->common. + value.integer), + (u32)obj_desc->integer.value)); + } #endif break; default: - ACPI_ERROR((AE_INFO, "Unknown Integer type %X", + + ACPI_ERROR((AE_INFO, "Unknown Integer type 0x%X", op_info->type)); status = AE_AML_OPERAND_TYPE; break; @@ -734,7 +770,8 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, /* Local ID (0-7) is (AML opcode - base AML_LOCAL_OP) */ - obj_desc->reference.value = opcode - AML_LOCAL_OP; + obj_desc->reference.value = + ((u32)opcode) - AML_LOCAL_OP; obj_desc->reference.class = ACPI_REFCLASS_LOCAL; #ifndef ACPI_NO_METHOD_EXECUTION @@ -754,7 +791,7 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, /* Arg ID (0-6) is (AML opcode - base AML_ARG_OP) */ - obj_desc->reference.value = opcode - AML_ARG_OP; + obj_desc->reference.value = ((u32)opcode) - AML_ARG_OP; obj_desc->reference.class = ACPI_REFCLASS_ARG; #ifndef ACPI_NO_METHOD_EXECUTION @@ -792,7 +829,7 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, default: ACPI_ERROR((AE_INFO, - "Unimplemented reference type for AML opcode: %4.4X", + "Unimplemented reference type for AML opcode: 0x%4.4X", opcode)); return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } @@ -802,7 +839,7 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, default: - ACPI_ERROR((AE_INFO, "Unimplemented data type: %X", + ACPI_ERROR((AE_INFO, "Unimplemented data type: 0x%X", obj_desc->common.type)); status = AE_AML_OPERAND_TYPE; |