Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/executer/exmisc.c b/drivers/acpi/executer/exmisc.c
new file mode 100644
index 0000000..b542dcd
--- /dev/null
+++ b/drivers/acpi/executer/exmisc.c
@@ -0,0 +1,738 @@
+
+/******************************************************************************
+ *
+ * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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>
+
+
+#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.opcode) {
+ case AML_LOCAL_OP:
+ case AML_ARG_OP:
+ case AML_DEBUG_OP:
+
+ /* The referenced object is the pseudo-node for the local/arg */
+
+ referenced_obj = obj_desc->reference.object;
+ break;
+
+ default:
+
+ ACPI_REPORT_ERROR (("Unknown Reference opcode in get_reference %X\n",
+ obj_desc->reference.opcode));
+ 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_REPORT_ERROR (("Invalid descriptor type in get_reference: %X\n",
+ 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.opcode = AML_REF_OF_OP;
+ 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)
+{
+ union acpi_operand_object *return_desc;
+ u8 *new_buf;
+ u8 *end_tag1;
+ u8 *end_tag2;
+ acpi_size length1;
+ acpi_size length2;
+
+
+ ACPI_FUNCTION_TRACE ("ex_concat_template");
+
+
+ /* Find the end_tags in each resource template */
+
+ end_tag1 = acpi_ut_get_resource_end_tag (operand0);
+ end_tag2 = acpi_ut_get_resource_end_tag (operand1);
+ if (!end_tag1 || !end_tag2) {
+ return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+ }
+
+ /* Compute the length of each part */
+
+ length1 = ACPI_PTR_DIFF (end_tag1, operand0->buffer.pointer);
+ length2 = ACPI_PTR_DIFF (end_tag2, operand1->buffer.pointer) +
+ 2; /* Size of END_TAG */
+
+ /* Create a new buffer object for the result */
+
+ return_desc = acpi_ut_create_buffer_object (length1 + length2);
+ if (!return_desc) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Copy the templates to the new descriptor */
+
+ new_buf = return_desc->buffer.pointer;
+ ACPI_MEMCPY (new_buf, operand0->buffer.pointer, length1);
+ ACPI_MEMCPY (new_buf + length1, operand1->buffer.pointer, length2);
+
+ /* Compute the new checksum */
+
+ new_buf[return_desc->buffer.length - 1] =
+ acpi_ut_generate_checksum (return_desc->buffer.pointer,
+ (return_desc->buffer.length - 1));
+
+ /* Return the completed template descriptor */
+
+ *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_size new_length;
+
+
+ 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_REPORT_ERROR (("Concat - invalid obj type: %X\n",
+ 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_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 */
+
+ new_length = (acpi_size) operand0->string.length +
+ (acpi_size) local_operand1->string.length;
+ if (new_length > ACPI_MAX_STRING_CONVERSION) {
+ status = AE_AML_STRING_LIMIT;
+ goto cleanup;
+ }
+
+ return_desc = acpi_ut_create_string_object (new_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 +
+ (acpi_size) 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_REPORT_ERROR (("Concatenate - Invalid object type: %X\n",
+ 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) */
+
+ return (integer0 << integer1);
+
+
+ case AML_SHIFT_RIGHT_OP: /* shift_right (Operand, shift_count, Result) */
+
+ 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 ((const char * ) operand0->buffer.pointer,
+ (const char * ) 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);
+}
+
+
