diff options
Diffstat (limited to 'drivers/acpi/executer/exmisc.c')
| -rw-r--r-- | drivers/acpi/executer/exmisc.c | 725 |
1 files changed, 0 insertions, 725 deletions
diff --git a/drivers/acpi/executer/exmisc.c b/drivers/acpi/executer/exmisc.c deleted file mode 100644 index efb191340059..000000000000 --- a/drivers/acpi/executer/exmisc.c +++ /dev/null @@ -1,725 +0,0 @@ - -/****************************************************************************** - * - * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, 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 <acpi/acinterp.h> -#include <acpi/amlcode.h> -#include <acpi/amlresrc.h> - -#define _COMPONENT ACPI_EXECUTER -ACPI_MODULE_NAME("exmisc") - -/******************************************************************************* - * - * FUNCTION: acpi_ex_get_object_reference - * - * PARAMETERS: obj_desc - Create a reference to this object - * return_desc - Where to store the reference - * walk_state - Current state - * - * RETURN: Status - * - * DESCRIPTION: Obtain and return a "reference" to the target object - * Common code for the ref_of_op and the cond_ref_of_op. - * - ******************************************************************************/ -acpi_status -acpi_ex_get_object_reference(union acpi_operand_object *obj_desc, - union acpi_operand_object **return_desc, - struct acpi_walk_state *walk_state) -{ - union acpi_operand_object *reference_obj; - union acpi_operand_object *referenced_obj; - - ACPI_FUNCTION_TRACE_PTR(ex_get_object_reference, obj_desc); - - *return_desc = NULL; - - switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) { - case ACPI_DESC_TYPE_OPERAND: - - if (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_LOCAL_REFERENCE) { - return_ACPI_STATUS(AE_AML_OPERAND_TYPE); - } - - /* - * Must be a reference to a Local or Arg - */ - switch (obj_desc->reference.class) { - case ACPI_REFCLASS_LOCAL: - case ACPI_REFCLASS_ARG: - case ACPI_REFCLASS_DEBUG: - - /* The referenced object is the pseudo-node for the local/arg */ - - referenced_obj = obj_desc->reference.object; - break; - - default: - - ACPI_ERROR((AE_INFO, "Unknown Reference Class %2.2X", - obj_desc->reference.class)); - return_ACPI_STATUS(AE_AML_INTERNAL); - } - break; - - case ACPI_DESC_TYPE_NAMED: - - /* - * A named reference that has already been resolved to a Node - */ - referenced_obj = obj_desc; - break; - - default: - - ACPI_ERROR((AE_INFO, "Invalid descriptor type %X", - ACPI_GET_DESCRIPTOR_TYPE(obj_desc))); - return_ACPI_STATUS(AE_TYPE); - } - - /* Create a new reference object */ - - reference_obj = - acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); - if (!reference_obj) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - reference_obj->reference.class = ACPI_REFCLASS_REFOF; - reference_obj->reference.object = referenced_obj; - *return_desc = reference_obj; - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Object %p Type [%s], returning Reference %p\n", - obj_desc, acpi_ut_get_object_type_name(obj_desc), - *return_desc)); - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_concat_template - * - * PARAMETERS: Operand0 - First source object - * Operand1 - Second source object - * actual_return_desc - Where to place the return object - * walk_state - Current walk state - * - * RETURN: Status - * - * DESCRIPTION: Concatenate two resource templates - * - ******************************************************************************/ - -acpi_status -acpi_ex_concat_template(union acpi_operand_object *operand0, - union acpi_operand_object *operand1, - union acpi_operand_object **actual_return_desc, - struct acpi_walk_state *walk_state) -{ - acpi_status status; - union acpi_operand_object *return_desc; - u8 *new_buf; - u8 *end_tag; - acpi_size length0; - acpi_size length1; - acpi_size new_length; - - ACPI_FUNCTION_TRACE(ex_concat_template); - - /* - * Find the end_tag descriptor in each resource template. - * Note1: returned pointers point TO the end_tag, not past it. - * Note2: zero-length buffers are allowed; treated like one end_tag - */ - - /* Get the length of the first resource template */ - - status = acpi_ut_get_resource_end_tag(operand0, &end_tag); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - length0 = ACPI_PTR_DIFF(end_tag, operand0->buffer.pointer); - - /* Get the length of the second resource template */ - - status = acpi_ut_get_resource_end_tag(operand1, &end_tag); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - length1 = ACPI_PTR_DIFF(end_tag, operand1->buffer.pointer); - - /* Combine both lengths, minimum size will be 2 for end_tag */ - - new_length = length0 + length1 + sizeof(struct aml_resource_end_tag); - - /* Create a new buffer object for the result (with one end_tag) */ - - return_desc = acpi_ut_create_buffer_object(new_length); - if (!return_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* - * Copy the templates to the new buffer, 0 first, then 1 follows. One - * end_tag descriptor is copied from Operand1. - */ - new_buf = return_desc->buffer.pointer; - ACPI_MEMCPY(new_buf, operand0->buffer.pointer, length0); - ACPI_MEMCPY(new_buf + length0, operand1->buffer.pointer, length1); - - /* Insert end_tag and set the checksum to zero, means "ignore checksum" */ - - new_buf[new_length - 1] = 0; - new_buf[new_length - 2] = ACPI_RESOURCE_NAME_END_TAG | 1; - - /* Return the completed resource template */ - - *actual_return_desc = return_desc; - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_do_concatenate - * - * PARAMETERS: Operand0 - First source object - * Operand1 - Second source object - * actual_return_desc - Where to place the return object - * walk_state - Current walk state - * - * RETURN: Status - * - * DESCRIPTION: Concatenate two objects OF THE SAME TYPE. - * - ******************************************************************************/ - -acpi_status -acpi_ex_do_concatenate(union acpi_operand_object *operand0, - union acpi_operand_object *operand1, - union acpi_operand_object **actual_return_desc, - struct acpi_walk_state *walk_state) -{ - union acpi_operand_object *local_operand1 = operand1; - union acpi_operand_object *return_desc; - char *new_buf; - acpi_status status; - - ACPI_FUNCTION_TRACE(ex_do_concatenate); - - /* - * Convert the second operand if necessary. The first operand - * determines the type of the second operand, (See the Data Types - * section of the ACPI specification.) Both object types are - * guaranteed to be either Integer/String/Buffer by the operand - * resolution mechanism. - */ - switch (ACPI_GET_OBJECT_TYPE(operand0)) { - case ACPI_TYPE_INTEGER: - status = - acpi_ex_convert_to_integer(operand1, &local_operand1, 16); - break; - - case ACPI_TYPE_STRING: - status = acpi_ex_convert_to_string(operand1, &local_operand1, - ACPI_IMPLICIT_CONVERT_HEX); - break; - - case ACPI_TYPE_BUFFER: - status = acpi_ex_convert_to_buffer(operand1, &local_operand1); - break; - - default: - ACPI_ERROR((AE_INFO, "Invalid object type: %X", - ACPI_GET_OBJECT_TYPE(operand0))); - status = AE_AML_INTERNAL; - } - - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - /* - * Both operands are now known to be the same object type - * (Both are Integer, String, or Buffer), and we can now perform the - * concatenation. - */ - - /* - * There are three cases to handle: - * - * 1) Two Integers concatenated to produce a new Buffer - * 2) Two Strings concatenated to produce a new String - * 3) Two Buffers concatenated to produce a new Buffer - */ - switch (ACPI_GET_OBJECT_TYPE(operand0)) { - case ACPI_TYPE_INTEGER: - - /* Result of two Integers is a Buffer */ - /* Need enough buffer space for two integers */ - - return_desc = acpi_ut_create_buffer_object((acpi_size) - ACPI_MUL_2 - (acpi_gbl_integer_byte_width)); - if (!return_desc) { - status = AE_NO_MEMORY; - goto cleanup; - } - - new_buf = (char *)return_desc->buffer.pointer; - - /* Copy the first integer, LSB first */ - - ACPI_MEMCPY(new_buf, &operand0->integer.value, - acpi_gbl_integer_byte_width); - - /* Copy the second integer (LSB first) after the first */ - - ACPI_MEMCPY(new_buf + acpi_gbl_integer_byte_width, - &local_operand1->integer.value, - acpi_gbl_integer_byte_width); - break; - - case ACPI_TYPE_STRING: - - /* Result of two Strings is a String */ - - return_desc = acpi_ut_create_string_object(((acpi_size) - operand0->string. - length + - local_operand1-> - string.length)); - if (!return_desc) { - status = AE_NO_MEMORY; - goto cleanup; - } - - new_buf = return_desc->string.pointer; - - /* Concatenate the strings */ - - ACPI_STRCPY(new_buf, operand0->string.pointer); - ACPI_STRCPY(new_buf + operand0->string.length, - local_operand1->string.pointer); - break; - - case ACPI_TYPE_BUFFER: - - /* Result of two Buffers is a Buffer */ - - return_desc = acpi_ut_create_buffer_object(((acpi_size) - operand0->buffer. - length + - local_operand1-> - buffer.length)); - if (!return_desc) { - status = AE_NO_MEMORY; - goto cleanup; - } - - new_buf = (char *)return_desc->buffer.pointer; - - /* Concatenate the buffers */ - - ACPI_MEMCPY(new_buf, operand0->buffer.pointer, - operand0->buffer.length); - ACPI_MEMCPY(new_buf + operand0->buffer.length, - local_operand1->buffer.pointer, - local_operand1->buffer.length); - break; - - default: - - /* Invalid object type, should not happen here */ - - ACPI_ERROR((AE_INFO, "Invalid object type: %X", - ACPI_GET_OBJECT_TYPE(operand0))); - status = AE_AML_INTERNAL; - goto cleanup; - } - - *actual_return_desc = return_desc; - - cleanup: - if (local_operand1 != operand1) { - acpi_ut_remove_reference(local_operand1); - } - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_do_math_op - * - * PARAMETERS: Opcode - AML opcode - * Integer0 - Integer operand #0 - * Integer1 - Integer operand #1 - * - * RETURN: Integer result of the operation - * - * DESCRIPTION: Execute a math AML opcode. The purpose of having all of the - * math functions here is to prevent a lot of pointer dereferencing - * to obtain the operands. - * - ******************************************************************************/ - -acpi_integer -acpi_ex_do_math_op(u16 opcode, acpi_integer integer0, acpi_integer integer1) -{ - - ACPI_FUNCTION_ENTRY(); - - switch (opcode) { - case AML_ADD_OP: /* Add (Integer0, Integer1, Result) */ - - return (integer0 + integer1); - - case AML_BIT_AND_OP: /* And (Integer0, Integer1, Result) */ - - return (integer0 & integer1); - - case AML_BIT_NAND_OP: /* NAnd (Integer0, Integer1, Result) */ - - return (~(integer0 & integer1)); - - case AML_BIT_OR_OP: /* Or (Integer0, Integer1, Result) */ - - return (integer0 | integer1); - - case AML_BIT_NOR_OP: /* NOr (Integer0, Integer1, Result) */ - - return (~(integer0 | integer1)); - - case AML_BIT_XOR_OP: /* XOr (Integer0, Integer1, Result) */ - - return (integer0 ^ integer1); - - case AML_MULTIPLY_OP: /* Multiply (Integer0, Integer1, Result) */ - - return (integer0 * integer1); - - case AML_SHIFT_LEFT_OP: /* shift_left (Operand, shift_count, Result) */ - - /* - * We need to check if the shiftcount is larger than the integer bit - * width since the behavior of this is not well-defined in the C language. - */ - if (integer1 >= acpi_gbl_integer_bit_width) { - return (0); - } - return (integer0 << integer1); - - case AML_SHIFT_RIGHT_OP: /* shift_right (Operand, shift_count, Result) */ - - /* - * We need to check if the shiftcount is larger than the integer bit - * width since the behavior of this is not well-defined in the C language. - */ - if (integer1 >= acpi_gbl_integer_bit_width) { - return (0); - } - return (integer0 >> integer1); - - case AML_SUBTRACT_OP: /* Subtract (Integer0, Integer1, Result) */ - - return (integer0 - integer1); - - default: - - return (0); - } -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_do_logical_numeric_op - * - * PARAMETERS: Opcode - AML opcode - * Integer0 - Integer operand #0 - * Integer1 - Integer operand #1 - * logical_result - TRUE/FALSE result of the operation - * - * RETURN: Status - * - * DESCRIPTION: Execute a logical "Numeric" AML opcode. For these Numeric - * operators (LAnd and LOr), both operands must be integers. - * - * Note: cleanest machine code seems to be produced by the code - * below, rather than using statements of the form: - * Result = (Integer0 && Integer1); - * - ******************************************************************************/ - -acpi_status -acpi_ex_do_logical_numeric_op(u16 opcode, - acpi_integer integer0, - acpi_integer integer1, u8 * logical_result) -{ - acpi_status status = AE_OK; - u8 local_result = FALSE; - - ACPI_FUNCTION_TRACE(ex_do_logical_numeric_op); - - switch (opcode) { - case AML_LAND_OP: /* LAnd (Integer0, Integer1) */ - - if (integer0 && integer1) { - local_result = TRUE; - } - break; - - case AML_LOR_OP: /* LOr (Integer0, Integer1) */ - - if (integer0 || integer1) { - local_result = TRUE; - } - break; - - default: - status = AE_AML_INTERNAL; - break; - } - - /* Return the logical result and status */ - - *logical_result = local_result; - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ex_do_logical_op - * - * PARAMETERS: Opcode - AML opcode - * Operand0 - operand #0 - * Operand1 - operand #1 - * logical_result - TRUE/FALSE result of the operation - * - * RETURN: Status - * - * DESCRIPTION: Execute a logical AML opcode. The purpose of having all of the - * functions here is to prevent a lot of pointer dereferencing - * to obtain the operands and to simplify the generation of the - * logical value. For the Numeric operators (LAnd and LOr), both - * operands must be integers. For the other logical operators, - * operands can be any combination of Integer/String/Buffer. The - * first operand determines the type to which the second operand - * will be converted. - * - * Note: cleanest machine code seems to be produced by the code - * below, rather than using statements of the form: - * Result = (Operand0 == Operand1); - * - ******************************************************************************/ - -acpi_status -acpi_ex_do_logical_op(u16 opcode, - union acpi_operand_object *operand0, - union acpi_operand_object *operand1, u8 * logical_result) -{ - union acpi_operand_object *local_operand1 = operand1; - acpi_integer integer0; - acpi_integer integer1; - u32 length0; - u32 length1; - acpi_status status = AE_OK; - u8 local_result = FALSE; - int compare; - - ACPI_FUNCTION_TRACE(ex_do_logical_op); - - /* - * Convert the second operand if necessary. The first operand - * determines the type of the second operand, (See the Data Types - * section of the ACPI 3.0+ specification.) Both object types are - * guaranteed to be either Integer/String/Buffer by the operand - * resolution mechanism. - */ - switch (ACPI_GET_OBJECT_TYPE(operand0)) { - case ACPI_TYPE_INTEGER: - status = - acpi_ex_convert_to_integer(operand1, &local_operand1, 16); - break; - - case ACPI_TYPE_STRING: - status = acpi_ex_convert_to_string(operand1, &local_operand1, - ACPI_IMPLICIT_CONVERT_HEX); - break; - - case ACPI_TYPE_BUFFER: - status = acpi_ex_convert_to_buffer(operand1, &local_operand1); - break; - - default: - status = AE_AML_INTERNAL; - break; - } - - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - /* - * Two cases: 1) Both Integers, 2) Both Strings or Buffers - */ - if (ACPI_GET_OBJECT_TYPE(operand0) == ACPI_TYPE_INTEGER) { - /* - * 1) Both operands are of type integer - * Note: local_operand1 may have changed above - */ - integer0 = operand0->integer.value; - integer1 = local_operand1->integer.value; - - switch (opcode) { - case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */ - - if (integer0 == integer1) { - local_result = TRUE; - } - break; - - case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */ - - if (integer0 > integer1) { - local_result = TRUE; - } - break; - - case AML_LLESS_OP: /* LLess (Operand0, Operand1) */ - - if (integer0 < integer1) { - local_result = TRUE; - } - break; - - default: - status = AE_AML_INTERNAL; - break; - } - } else { - /* - * 2) Both operands are Strings or both are Buffers - * Note: Code below takes advantage of common Buffer/String - * object fields. local_operand1 may have changed above. Use - * memcmp to handle nulls in buffers. - */ - length0 = operand0->buffer.length; - length1 = local_operand1->buffer.length; - - /* Lexicographic compare: compare the data bytes */ - - compare = ACPI_MEMCMP(operand0->buffer.pointer, - local_operand1->buffer.pointer, - (length0 > length1) ? length1 : length0); - - switch (opcode) { - case AML_LEQUAL_OP: /* LEqual (Operand0, Operand1) */ - - /* Length and all bytes must be equal */ - - if ((length0 == length1) && (compare == 0)) { - - /* Length and all bytes match ==> TRUE */ - - local_result = TRUE; - } - break; - - case AML_LGREATER_OP: /* LGreater (Operand0, Operand1) */ - - if (compare > 0) { - local_result = TRUE; - goto cleanup; /* TRUE */ - } - if (compare < 0) { - goto cleanup; /* FALSE */ - } - - /* Bytes match (to shortest length), compare lengths */ - - if (length0 > length1) { - local_result = TRUE; - } - break; - - case AML_LLESS_OP: /* LLess (Operand0, Operand1) */ - - if (compare > 0) { - goto cleanup; /* FALSE */ - } - if (compare < 0) { - local_result = TRUE; - goto cleanup; /* TRUE */ - } - - /* Bytes match (to shortest length), compare lengths */ - - if (length0 < length1) { - local_result = TRUE; - } - break; - - default: - status = AE_AML_INTERNAL; - break; - } - } - - cleanup: - - /* New object was created if implicit conversion performed - delete */ - - if (local_operand1 != operand1) { - acpi_ut_remove_reference(local_operand1); - } - - /* Return the logical result and status */ - - *logical_result = local_result; - return_ACPI_STATUS(status); -} |
