patch-2.4.14 linux/drivers/acpi/executer/exoparg2.c

• Lines: 565
• Date: Wed Oct 24 14:06:22 2001
• Orig file: v2.4.13/linux/drivers/acpi/executer/exoparg2.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.13/linux/drivers/acpi/executer/exoparg2.c linux/drivers/acpi/executer/exoparg2.c
@@ -0,0 +1,564 @@
+/******************************************************************************
+ *
+ * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
+ *              $Revision: 97 $
+ *
+ *****************************************************************************/
+
+/*
+ *  Copyright (C) 2000, 2001 R. Byron Moore
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "acpi.h"
+#include "acparser.h"
+#include "acnamesp.h"
+#include "acinterp.h"
+#include "acevents.h"
+#include "amlcode.h"
+#include "acdispat.h"
+
+
+#define _COMPONENT          ACPI_EXECUTER
+	 MODULE_NAME         ("exoparg2")
+
+
+/*!
+ * Naming convention for AML interpreter execution routines.
+ *
+ * The routines that begin execution of AML opcodes are named with a common
+ * convention based upon the number of arguments, the number of target operands,
+ * and whether or not a value is returned:
+ *
+ *      AcpiExOpcode_xA_yT_zR
+ *
+ * Where:
+ *
+ * xA - ARGUMENTS:    The number of arguments (input operands) that are
+ *                    required for this opcode type (1 through 6 args).
+ * yT - TARGETS:      The number of targets (output operands) that are required
+ *                    for this opcode type (0, 1, or 2 targets).
+ * zR - RETURN VALUE: Indicates whether this opcode type returns a value
+ *                    as the function return (0 or 1).
+ *
+ * The AcpiExOpcode* functions are called via the Dispatcher component with
+ * fully resolved operands.
+!*/
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_opcode_2A_0T_0R
+ *
+ * PARAMETERS:  Walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute opcode with two arguments, no target, and no return
+ *              value.
+ *
+ * ALLOCATION:  Deletes both operands
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_opcode_2A_0T_0R (
+	acpi_walk_state         *walk_state)
+{
+	acpi_operand_object     **operand = &walk_state->operands[0];
+	acpi_namespace_node     *node;
+	acpi_status             status = AE_OK;
+
+
+	FUNCTION_TRACE_STR ("Ex_opcode_2A_0T_0R", acpi_ps_get_opcode_name (walk_state->opcode));
+
+
+	/* Examine the opcode */
+
+	switch (walk_state->opcode) {
+
+	case AML_NOTIFY_OP:         /* Notify (Notify_object, Notify_value) */
+
+		/* The first operand is a namespace node */
+
+		node = (acpi_namespace_node *) operand[0];
+
+		/* The node must refer to a device or thermal zone */
+
+		if (node && operand[1])     /* TBD: is this check necessary? */ {
+			switch (node->type) {
+			case ACPI_TYPE_DEVICE:
+			case ACPI_TYPE_THERMAL:
+
+				/*
+				 * Dispatch the notify to the appropriate handler
+				 * NOTE: the request is queued for execution after this method
+				 * completes.  The notify handlers are NOT invoked synchronously
+				 * from this thread -- because handlers may in turn run other
+				 * control methods.
+				 */
+				status = acpi_ev_queue_notify_request (node,
+						 (u32) operand[1]->integer.value);
+				break;
+
+			default:
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unexpected notify object type %X\n",
+					node->type));
+
+				status = AE_AML_OPERAND_TYPE;
+				break;
+			}
+		}
+		break;
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_opcode_2A_0T_0R: Unknown opcode %X\n", walk_state->opcode));
+		status = AE_AML_BAD_OPCODE;
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_opcode_2A_2T_1R
+ *
+ * PARAMETERS:  Walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets
+ *              and one implicit return value.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_opcode_2A_2T_1R (
+	acpi_walk_state         *walk_state)
+{
+	acpi_operand_object     **operand = &walk_state->operands[0];
+	acpi_operand_object     *return_desc1 = NULL;
+	acpi_operand_object     *return_desc2 = NULL;
+	acpi_status             status;
+
+
+	FUNCTION_TRACE_STR ("Ex_opcode_2A_2T_1R", acpi_ps_get_opcode_name (walk_state->opcode));
+
+
+	/*
+	 * Execute the opcode
+	 */
+	switch (walk_state->opcode) {
+	case AML_DIVIDE_OP:             /* Divide (Dividend, Divisor, Remainder_result Quotient_result) */
+
+		return_desc1 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		if (!return_desc1) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		return_desc2 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		if (!return_desc2) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		/* Quotient to Return_desc1, remainder to Return_desc2 */
+
+		status = acpi_ut_divide (&operand[0]->integer.value, &operand[1]->integer.value,
+				   &return_desc1->integer.value, &return_desc2->integer.value);
+		if (ACPI_FAILURE (status)) {
+			goto cleanup;
+		}
+		break;
+
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_opcode_2A_2T_1R: Unknown opcode %X\n",
+				walk_state->opcode));
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+		break;
+	}
+
+
+	/* Store the results to the target reference operands */
+
+	status = acpi_ex_store (return_desc2, operand[2], walk_state);
+	if (ACPI_FAILURE (status)) {
+		goto cleanup;
+	}
+
+	status = acpi_ex_store (return_desc1, operand[3], walk_state);
+	if (ACPI_FAILURE (status)) {
+		goto cleanup;
+	}
+
+	/* Return the remainder */
+
+	walk_state->result_obj = return_desc1;
+
+
+cleanup:
+	/*
+	 * Since the remainder is not returned indirectly, remove a reference to
+	 * it. Only the quotient is returned indirectly.
+	 */
+	acpi_ut_remove_reference (return_desc2);
+
+	if (ACPI_FAILURE (status)) {
+		/* Delete the return object */
+
+		acpi_ut_remove_reference (return_desc1);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_opcode_2A_1T_1R
+ *
+ * PARAMETERS:  Walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute opcode with two arguments, one target, and a return
+ *              value.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_opcode_2A_1T_1R (
+	acpi_walk_state         *walk_state)
+{
+	acpi_operand_object     **operand   = &walk_state->operands[0];
+	acpi_operand_object     *return_desc = NULL;
+	acpi_operand_object     *temp_desc;
+	u32                     index;
+	acpi_status             status      = AE_OK;
+
+
+	FUNCTION_TRACE_STR ("Ex_opcode_2A_1T_1R", acpi_ps_get_opcode_name (walk_state->opcode));
+
+
+	/*
+	 * Execute the opcode
+	 */
+	if (walk_state->op_info->flags & AML_MATH) {
+		/* All simple math opcodes (add, etc.) */
+
+		return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		if (!return_desc) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		return_desc->integer.value = acpi_ex_do_math_op (walk_state->opcode,
+				  operand[0]->integer.value,
+				  operand[1]->integer.value);
+		goto store_result_to_target;
+	}
+
+
+	switch (walk_state->opcode) {
+	case AML_MOD_OP:                /* Mod (Dividend, Divisor, Remainder_result (ACPI 2.0) */
+
+		return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		if (!return_desc) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		/* Return_desc will contain the remainder */
+
+		status = acpi_ut_divide (&operand[0]->integer.value, &operand[1]->integer.value,
+				  NULL, &return_desc->integer.value);
+
+		break;
+
+
+	case AML_CONCAT_OP:             /* Concatenate (Data1, Data2, Result) */
+
+		/*
+		 * 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 above.
+		 */
+		switch (operand[0]->common.type) {
+		case ACPI_TYPE_INTEGER:
+			status = acpi_ex_convert_to_integer (operand[1], &operand[1], walk_state);
+			break;
+
+		case ACPI_TYPE_STRING:
+			status = acpi_ex_convert_to_string (operand[1], &operand[1], 16, ACPI_UINT32_MAX, walk_state);
+			break;
+
+		case ACPI_TYPE_BUFFER:
+			status = acpi_ex_convert_to_buffer (operand[1], &operand[1], walk_state);
+			break;
+
+		default:
+			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.
+		 */
+		status = acpi_ex_do_concatenate (operand[0], operand[1], &return_desc, walk_state);
+		break;
+
+
+	case AML_TO_STRING_OP:          /* To_string (Buffer, Length, Result) (ACPI 2.0) */
+
+		status = acpi_ex_convert_to_string (operand[0], &return_desc, 16,
+				  (u32) operand[1]->integer.value, walk_state);
+		break;
+
+
+	case AML_CONCAT_RES_OP:         /* Concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */
+
+		status = AE_NOT_IMPLEMENTED;
+		break;
+
+
+	case AML_INDEX_OP:              /* Index (Source Index Result) */
+
+		/* Create the internal return object */
+
+		return_desc = acpi_ut_create_internal_object (INTERNAL_TYPE_REFERENCE);
+		if (!return_desc) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		index = (u32) operand[1]->integer.value;
+
+		/*
+		 * At this point, the Source operand is either a Package or a Buffer
+		 */
+		if (operand[0]->common.type == ACPI_TYPE_PACKAGE) {
+			/* Object to be indexed is a Package */
+
+			if (index >= operand[0]->package.count) {
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Index value beyond package end\n"));
+				status = AE_AML_PACKAGE_LIMIT;
+				goto cleanup;
+			}
+
+			if ((operand[2]->common.type == INTERNAL_TYPE_REFERENCE) &&
+				(operand[2]->reference.opcode == AML_ZERO_OP)) {
+				/*
+				 * There is no actual result descriptor (the Zero_op Result
+				 * descriptor is a placeholder), so just delete the placeholder and
+				 * return a reference to the package element
+				 */
+				acpi_ut_remove_reference (operand[2]);
+			}
+
+			else {
+				/*
+				 * Each element of the package is an internal object.  Get the one
+				 * we are after.
+				 */
+				temp_desc                        = operand[0]->package.elements [index];
+				return_desc->reference.opcode    = AML_INDEX_OP;
+				return_desc->reference.target_type = temp_desc->common.type;
+				return_desc->reference.object    = temp_desc;
+
+				status = acpi_ex_store (return_desc, operand[2], walk_state);
+				return_desc->reference.object    = NULL;
+			}
+
+			/*
+			 * The local return object must always be a reference to the package element,
+			 * not the element itself.
+			 */
+			return_desc->reference.opcode    = AML_INDEX_OP;
+			return_desc->reference.target_type = ACPI_TYPE_PACKAGE;
+			return_desc->reference.where     = &operand[0]->package.elements [index];
+		}
+
+		else {
+			/* Object to be indexed is a Buffer */
+
+			if (index >= operand[0]->buffer.length) {
+				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Index value beyond end of buffer\n"));
+				status = AE_AML_BUFFER_LIMIT;
+				goto cleanup;
+			}
+
+			return_desc->reference.opcode      = AML_INDEX_OP;
+			return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD;
+			return_desc->reference.object      = operand[0];
+			return_desc->reference.offset      = index;
+
+			status = acpi_ex_store (return_desc, operand[2], walk_state);
+		}
+
+		walk_state->result_obj = return_desc;
+		goto cleanup;
+		break;
+
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_opcode_2A_1T_1R: Unknown opcode %X\n",
+				walk_state->opcode));
+		status = AE_AML_BAD_OPCODE;
+		break;
+	}
+
+
+store_result_to_target:
+
+	if (ACPI_SUCCESS (status)) {
+		/*
+		 * Store the result of the operation (which is now in Return_desc) into
+		 * the Target descriptor.
+		 */
+		status = acpi_ex_store (return_desc, operand[2], walk_state);
+		if (ACPI_FAILURE (status)) {
+			goto cleanup;
+		}
+
+		walk_state->result_obj = return_desc;
+	}
+
+
+cleanup:
+
+	/* Delete return object on error */
+
+	if (ACPI_FAILURE (status)) {
+		acpi_ut_remove_reference (return_desc);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_opcode_2A_0T_1R
+ *
+ * PARAMETERS:  Walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_opcode_2A_0T_1R (
+	acpi_walk_state         *walk_state)
+{
+	acpi_operand_object     **operand = &walk_state->operands[0];
+	acpi_operand_object     *return_desc = NULL;
+	acpi_status             status = AE_OK;
+	u8                      logical_result = FALSE;
+
+
+	FUNCTION_TRACE_STR ("Ex_opcode_2A_0T_1R", acpi_ps_get_opcode_name (walk_state->opcode));
+
+
+	/* Create the internal return object */
+
+	return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+	if (!return_desc) {
+		status = AE_NO_MEMORY;
+		goto cleanup;
+	}
+
+	/*
+	 * Execute the Opcode
+	 */
+	if (walk_state->op_info->flags & AML_LOGICAL) /* Logical_op (Operand0, Operand1) */ {
+		logical_result = acpi_ex_do_logical_op (walk_state->opcode,
+				 operand[0]->integer.value,
+				 operand[1]->integer.value);
+		goto store_logical_result;
+	}
+
+
+	switch (walk_state->opcode) {
+	case AML_ACQUIRE_OP:            /* Acquire (Mutex_object, Timeout) */
+
+		status = acpi_ex_acquire_mutex (operand[1], operand[0], walk_state);
+		if (status == AE_TIME) {
+			logical_result = TRUE;      /* TRUE = Acquire timed out */
+			status = AE_OK;
+		}
+		break;
+
+
+	case AML_WAIT_OP:               /* Wait (Event_object, Timeout) */
+
+		status = acpi_ex_system_wait_event (operand[1], operand[0]);
+		if (status == AE_TIME) {
+			logical_result = TRUE;      /* TRUE, Wait timed out */
+			status = AE_OK;
+		}
+		break;
+
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_opcode_2A_0T_1R: Unknown opcode %X\n", walk_state->opcode));
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+		break;
+	}
+
+
+store_logical_result:
+	/*
+	 * Set return value to according to Logical_result. logical TRUE (all ones)
+	 * Default is FALSE (zero)
+	 */
+	if (logical_result) {
+		return_desc->integer.value = ACPI_INTEGER_MAX;
+	}
+
+	walk_state->result_obj = return_desc;
+
+
+cleanup:
+
+	/* Delete return object on error */
+
+	if (ACPI_FAILURE (status)) {
+		acpi_ut_remove_reference (return_desc);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+