Linux-2.6.12-rc2v2.6.12-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, 661 insertions, 0 deletions

diff --git a/drivers/acpi/executer/exresop.c b/drivers/acpi/executer/exresop.c
new file mode 100644
index 00000000000..c92890220c3
--- /dev/null
+++ b/drivers/acpi/executer/exresop.c
@@ -0,0 +1,661 @@
+
+/******************************************************************************
+ *
+ * Module Name: exresop - AML Interpreter operand/object resolution
+ *
+ *****************************************************************************/
+
+/*
+ * 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/amlcode.h>
+#include <acpi/acparser.h>
+#include <acpi/acinterp.h>
+
+
+#define _COMPONENT          ACPI_EXECUTER
+	 ACPI_MODULE_NAME    ("exresop")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_check_object_type
+ *
+ * PARAMETERS:  type_needed         Object type needed
+ *              this_type           Actual object type
+ *              Object              Object pointer
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check required type against actual type
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_check_object_type (
+	acpi_object_type                type_needed,
+	acpi_object_type                this_type,
+	void                            *object)
+{
+	ACPI_FUNCTION_NAME ("ex_check_object_type");
+
+
+	if (type_needed == ACPI_TYPE_ANY) {
+		/* All types OK, so we don't perform any typechecks */
+
+		return (AE_OK);
+	}
+
+	if (type_needed == ACPI_TYPE_LOCAL_REFERENCE) {
+		/*
+		 * Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
+		 * objects and thus allow them to be targets.  (As per the ACPI
+		 * specification, a store to a constant is a noop.)
+		 */
+		if ((this_type == ACPI_TYPE_INTEGER) &&
+			(((union acpi_operand_object *) object)->common.flags & AOPOBJ_AML_CONSTANT)) {
+			return (AE_OK);
+		}
+	}
+
+	if (type_needed != this_type) {
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Needed [%s], found [%s] %p\n",
+			acpi_ut_get_type_name (type_needed),
+			acpi_ut_get_type_name (this_type), object));
+
+		return (AE_AML_OPERAND_TYPE);
+	}
+
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_resolve_operands
+ *
+ * PARAMETERS:  Opcode              - Opcode being interpreted
+ *              stack_ptr           - Pointer to the operand stack to be
+ *                                    resolved
+ *              walk_state          - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert multiple input operands to the types required by the
+ *              target operator.
+ *
+ *      Each 5-bit group in arg_types represents one required
+ *      operand and indicates the required Type. The corresponding operand
+ *      will be converted to the required type if possible, otherwise we
+ *      abort with an exception.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_resolve_operands (
+	u16                             opcode,
+	union acpi_operand_object       **stack_ptr,
+	struct acpi_walk_state          *walk_state)
+{
+	union acpi_operand_object       *obj_desc;
+	acpi_status                     status = AE_OK;
+	u8                              object_type;
+	void                            *temp_node;
+	u32                             arg_types;
+	const struct acpi_opcode_info   *op_info;
+	u32                             this_arg_type;
+	acpi_object_type                type_needed;
+
+
+	ACPI_FUNCTION_TRACE_U32 ("ex_resolve_operands", opcode);
+
+
+	op_info = acpi_ps_get_opcode_info (opcode);
+	if (op_info->class == AML_CLASS_UNKNOWN) {
+		return_ACPI_STATUS (AE_AML_BAD_OPCODE);
+	}
+
+	arg_types = op_info->runtime_args;
+	if (arg_types == ARGI_INVALID_OPCODE) {
+		ACPI_REPORT_ERROR (("resolve_operands: %X is not a valid AML opcode\n",
+			opcode));
+
+		return_ACPI_STATUS (AE_AML_INTERNAL);
+	}
+
+	ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode %X [%s] required_operand_types=%8.8X \n",
+		opcode, op_info->name, arg_types));
+
+	/*
+	 * Normal exit is with (arg_types == 0) at end of argument list.
+	 * Function will return an exception from within the loop upon
+	 * finding an entry which is not (or cannot be converted
+	 * to) the required type; if stack underflows; or upon
+	 * finding a NULL stack entry (which should not happen).
+	 */
+	while (GET_CURRENT_ARG_TYPE (arg_types)) {
+		if (!stack_ptr || !*stack_ptr) {
+			ACPI_REPORT_ERROR (("resolve_operands: Null stack entry at %p\n",
+				stack_ptr));
+
+			return_ACPI_STATUS (AE_AML_INTERNAL);
+		}
+
+		/* Extract useful items */
+
+		obj_desc = *stack_ptr;
+
+		/* Decode the descriptor type */
+
+		switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) {
+		case ACPI_DESC_TYPE_NAMED:
+
+			/* Node */
+
+			object_type = ((struct acpi_namespace_node *) obj_desc)->type;
+			break;
+
+
+		case ACPI_DESC_TYPE_OPERAND:
+
+			/* ACPI internal object */
+
+			object_type = ACPI_GET_OBJECT_TYPE (obj_desc);
+
+			/* Check for bad acpi_object_type */
+
+			if (!acpi_ut_valid_object_type (object_type)) {
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Bad operand object type [%X]\n",
+					object_type));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+
+			if (object_type == (u8) ACPI_TYPE_LOCAL_REFERENCE) {
+				/*
+				 * Decode the Reference
+				 */
+				op_info = acpi_ps_get_opcode_info (opcode);
+				if (op_info->class == AML_CLASS_UNKNOWN) {
+					return_ACPI_STATUS (AE_AML_BAD_OPCODE);
+				}
+
+				switch (obj_desc->reference.opcode) {
+				case AML_DEBUG_OP:
+				case AML_NAME_OP:
+				case AML_INDEX_OP:
+				case AML_REF_OF_OP:
+				case AML_ARG_OP:
+				case AML_LOCAL_OP:
+				case AML_LOAD_OP:   /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
+
+					ACPI_DEBUG_ONLY_MEMBERS (ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+						"Operand is a Reference, ref_opcode [%s]\n",
+						(acpi_ps_get_opcode_info (obj_desc->reference.opcode))->name)));
+					break;
+
+				default:
+					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+						"Operand is a Reference, Unknown Reference Opcode %X [%s]\n",
+						obj_desc->reference.opcode,
+						(acpi_ps_get_opcode_info (obj_desc->reference.opcode))->name));
+
+					return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+				}
+			}
+			break;
+
+
+		default:
+
+			/* Invalid descriptor */
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Invalid descriptor %p [%s]\n",
+					obj_desc, acpi_ut_get_descriptor_name (obj_desc)));
+
+			return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+		}
+
+
+		/*
+		 * Get one argument type, point to the next
+		 */
+		this_arg_type = GET_CURRENT_ARG_TYPE (arg_types);
+		INCREMENT_ARG_LIST (arg_types);
+
+		/*
+		 * Handle cases where the object does not need to be
+		 * resolved to a value
+		 */
+		switch (this_arg_type) {
+		case ARGI_REF_OR_STRING:        /* Can be a String or Reference */
+
+			if ((ACPI_GET_DESCRIPTOR_TYPE (obj_desc) == ACPI_DESC_TYPE_OPERAND) &&
+				(ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_STRING)) {
+				/*
+				 * String found - the string references a named object and must be
+				 * resolved to a node
+				 */
+				goto next_operand;
+			}
+
+			/* Else not a string - fall through to the normal Reference case below */
+			/*lint -fallthrough */
+
+		case ARGI_REFERENCE:            /* References: */
+		case ARGI_INTEGER_REF:
+		case ARGI_OBJECT_REF:
+		case ARGI_DEVICE_REF:
+		case ARGI_TARGETREF:            /* Allows implicit conversion rules before store */
+		case ARGI_FIXED_TARGET:         /* No implicit conversion before store to target */
+		case ARGI_SIMPLE_TARGET:        /* Name, Local, or Arg - no implicit conversion  */
+
+			/* Need an operand of type ACPI_TYPE_LOCAL_REFERENCE */
+
+			if (ACPI_GET_DESCRIPTOR_TYPE (obj_desc) == ACPI_DESC_TYPE_NAMED) /* Node (name) ptr OK as-is */ {
+				goto next_operand;
+			}
+
+			status = acpi_ex_check_object_type (ACPI_TYPE_LOCAL_REFERENCE,
+					  object_type, obj_desc);
+			if (ACPI_FAILURE (status)) {
+				return_ACPI_STATUS (status);
+			}
+
+			if (AML_NAME_OP == obj_desc->reference.opcode) {
+				/*
+				 * Convert an indirect name ptr to direct name ptr and put
+				 * it on the stack
+				 */
+				temp_node = obj_desc->reference.object;
+				acpi_ut_remove_reference (obj_desc);
+				(*stack_ptr) = temp_node;
+			}
+			goto next_operand;
+
+
+		case ARGI_DATAREFOBJ:  /* Store operator only */
+
+			/*
+			 * We don't want to resolve index_op reference objects during
+			 * a store because this would be an implicit de_ref_of operation.
+			 * Instead, we just want to store the reference object.
+			 * -- All others must be resolved below.
+			 */
+			if ((opcode == AML_STORE_OP) &&
+				(ACPI_GET_OBJECT_TYPE (*stack_ptr) == ACPI_TYPE_LOCAL_REFERENCE) &&
+				((*stack_ptr)->reference.opcode == AML_INDEX_OP)) {
+				goto next_operand;
+			}
+			break;
+
+		default:
+			/* All cases covered above */
+			break;
+		}
+
+
+		/*
+		 * Resolve this object to a value
+		 */
+		status = acpi_ex_resolve_to_value (stack_ptr, walk_state);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+
+		/* Get the resolved object */
+
+		obj_desc = *stack_ptr;
+
+		/*
+		 * Check the resulting object (value) type
+		 */
+		switch (this_arg_type) {
+		/*
+		 * For the simple cases, only one type of resolved object
+		 * is allowed
+		 */
+		case ARGI_MUTEX:
+
+			/* Need an operand of type ACPI_TYPE_MUTEX */
+
+			type_needed = ACPI_TYPE_MUTEX;
+			break;
+
+		case ARGI_EVENT:
+
+			/* Need an operand of type ACPI_TYPE_EVENT */
+
+			type_needed = ACPI_TYPE_EVENT;
+			break;
+
+		case ARGI_PACKAGE:   /* Package */
+
+			/* Need an operand of type ACPI_TYPE_PACKAGE */
+
+			type_needed = ACPI_TYPE_PACKAGE;
+			break;
+
+		case ARGI_ANYTYPE:
+
+			/* Any operand type will do */
+
+			type_needed = ACPI_TYPE_ANY;
+			break;
+
+		case ARGI_DDBHANDLE:
+
+			/* Need an operand of type ACPI_TYPE_DDB_HANDLE */
+
+			type_needed = ACPI_TYPE_LOCAL_REFERENCE;
+			break;
+
+
+		/*
+		 * The more complex cases allow multiple resolved object types
+		 */
+		case ARGI_INTEGER:   /* Number */
+
+			/*
+			 * Need an operand of type ACPI_TYPE_INTEGER,
+			 * But we can implicitly convert from a STRING or BUFFER
+			 * Aka - "Implicit Source Operand Conversion"
+			 */
+			status = acpi_ex_convert_to_integer (obj_desc, stack_ptr, 16);
+			if (ACPI_FAILURE (status)) {
+				if (status == AE_TYPE) {
+					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+						"Needed [Integer/String/Buffer], found [%s] %p\n",
+						acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+					return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+				}
+
+				return_ACPI_STATUS (status);
+			}
+			goto next_operand;
+
+
+		case ARGI_BUFFER:
+
+			/*
+			 * Need an operand of type ACPI_TYPE_BUFFER,
+			 * But we can implicitly convert from a STRING or INTEGER
+			 * Aka - "Implicit Source Operand Conversion"
+			 */
+			status = acpi_ex_convert_to_buffer (obj_desc, stack_ptr);
+			if (ACPI_FAILURE (status)) {
+				if (status == AE_TYPE) {
+					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+						"Needed [Integer/String/Buffer], found [%s] %p\n",
+						acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+					return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+				}
+
+				return_ACPI_STATUS (status);
+			}
+			goto next_operand;
+
+
+		case ARGI_STRING:
+
+			/*
+			 * Need an operand of type ACPI_TYPE_STRING,
+			 * But we can implicitly convert from a BUFFER or INTEGER
+			 * Aka - "Implicit Source Operand Conversion"
+			 */
+			status = acpi_ex_convert_to_string (obj_desc, stack_ptr,
+					 ACPI_IMPLICIT_CONVERT_HEX);
+			if (ACPI_FAILURE (status)) {
+				if (status == AE_TYPE) {
+					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+						"Needed [Integer/String/Buffer], found [%s] %p\n",
+						acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+					return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+				}
+
+				return_ACPI_STATUS (status);
+			}
+			goto next_operand;
+
+
+		case ARGI_COMPUTEDATA:
+
+			/* Need an operand of type INTEGER, STRING or BUFFER */
+
+			switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+			case ACPI_TYPE_INTEGER:
+			case ACPI_TYPE_STRING:
+			case ACPI_TYPE_BUFFER:
+
+				/* Valid operand */
+			   break;
+
+			default:
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Needed [Integer/String/Buffer], found [%s] %p\n",
+					acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+			goto next_operand;
+
+
+		case ARGI_BUFFER_OR_STRING:
+
+			/* Need an operand of type STRING or BUFFER */
+
+			switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+			case ACPI_TYPE_STRING:
+			case ACPI_TYPE_BUFFER:
+
+				/* Valid operand */
+			   break;
+
+			case ACPI_TYPE_INTEGER:
+
+				/* Highest priority conversion is to type Buffer */
+
+				status = acpi_ex_convert_to_buffer (obj_desc, stack_ptr);
+				if (ACPI_FAILURE (status)) {
+					return_ACPI_STATUS (status);
+				}
+				break;
+
+			default:
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Needed [Integer/String/Buffer], found [%s] %p\n",
+					acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+			goto next_operand;
+
+
+		case ARGI_DATAOBJECT:
+			/*
+			 * ARGI_DATAOBJECT is only used by the size_of operator.
+			 * Need a buffer, string, package, or ref_of reference.
+			 *
+			 * The only reference allowed here is a direct reference to
+			 * a namespace node.
+			 */
+			switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+			case ACPI_TYPE_PACKAGE:
+			case ACPI_TYPE_STRING:
+			case ACPI_TYPE_BUFFER:
+			case ACPI_TYPE_LOCAL_REFERENCE:
+
+				/* Valid operand */
+				break;
+
+			default:
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Needed [Buffer/String/Package/Reference], found [%s] %p\n",
+					acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+			goto next_operand;
+
+
+		case ARGI_COMPLEXOBJ:
+
+			/* Need a buffer or package or (ACPI 2.0) String */
+
+			switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+			case ACPI_TYPE_PACKAGE:
+			case ACPI_TYPE_STRING:
+			case ACPI_TYPE_BUFFER:
+
+				/* Valid operand */
+				break;
+
+			default:
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Needed [Buffer/String/Package], found [%s] %p\n",
+					acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+			goto next_operand;
+
+
+		case ARGI_REGION_OR_FIELD:
+
+			/* Need an operand of type ACPI_TYPE_REGION or a FIELD in a region */
+
+			switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+			case ACPI_TYPE_REGION:
+			case ACPI_TYPE_LOCAL_REGION_FIELD:
+			case ACPI_TYPE_LOCAL_BANK_FIELD:
+			case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
+				/* Valid operand */
+				break;
+
+			default:
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Needed [Region/region_field], found [%s] %p\n",
+					acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+			goto next_operand;
+
+
+		case ARGI_DATAREFOBJ:
+
+			/* Used by the Store() operator only */
+
+			switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+			case ACPI_TYPE_INTEGER:
+			case ACPI_TYPE_PACKAGE:
+			case ACPI_TYPE_STRING:
+			case ACPI_TYPE_BUFFER:
+			case ACPI_TYPE_BUFFER_FIELD:
+			case ACPI_TYPE_LOCAL_REFERENCE:
+			case ACPI_TYPE_LOCAL_REGION_FIELD:
+			case ACPI_TYPE_LOCAL_BANK_FIELD:
+			case ACPI_TYPE_LOCAL_INDEX_FIELD:
+			case ACPI_TYPE_DDB_HANDLE:
+
+				/* Valid operand */
+				break;
+
+			default:
+
+				if (acpi_gbl_enable_interpreter_slack) {
+					/*
+					 * Enable original behavior of Store(), allowing any and all
+					 * objects as the source operand.  The ACPI spec does not
+					 * allow this, however.
+					 */
+					break;
+				}
+
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+					"Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p\n",
+					acpi_ut_get_object_type_name (obj_desc), obj_desc));
+
+				return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+			}
+			goto next_operand;
+
+
+		default:
+
+			/* Unknown type */
+
+			ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+				"Internal - Unknown ARGI (required operand) type %X\n",
+				this_arg_type));
+
+			return_ACPI_STATUS (AE_BAD_PARAMETER);
+		}
+
+		/*
+		 * Make sure that the original object was resolved to the
+		 * required object type (Simple cases only).
+		 */
+		status = acpi_ex_check_object_type (type_needed,
+				  ACPI_GET_OBJECT_TYPE (*stack_ptr), *stack_ptr);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+
+next_operand:
+		/*
+		 * If more operands needed, decrement stack_ptr to point
+		 * to next operand on stack
+		 */
+		if (GET_CURRENT_ARG_TYPE (arg_types)) {
+			stack_ptr--;
+		}
+
+	}   /* while (*Types) */
+
+	return_ACPI_STATUS (status);
+}
+
+