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!

1 files changed, 738 insertions, 0 deletions

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);
+}
+
+