1 files changed, 608 insertions, 0 deletions

diff --git a/drivers/acpi/executer/exoparg2.c b/drivers/acpi/executer/exoparg2.c
new file mode 100644
index 000000000000..8be4d80ceed5
--- /dev/null
+++ b/drivers/acpi/executer/exoparg2.c
@@ -0,0 +1,608 @@
+/******************************************************************************
+ *
+ * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acparser.h>
+#include <acpi/acinterp.h>
+#include <acpi/acevents.h>
+#include <acpi/amlcode.h>
+
+
+#define _COMPONENT          ACPI_EXECUTER
+         ACPI_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 (
+        struct acpi_walk_state          *walk_state)
+{
+        union acpi_operand_object       **operand = &walk_state->operands[0];
+        struct acpi_namespace_node      *node;
+        u32                             value;
+        acpi_status                     status = AE_OK;
+
+
+        ACPI_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 = (struct acpi_namespace_node *) operand[0];
+
+                /* Second value is the notify value */
+
+                value = (u32) operand[1]->integer.value;
+
+                /* Notifies allowed on this object? */
+
+                if (!acpi_ev_is_notify_object (node)) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                        "Unexpected notify object type [%s]\n",
+                                        acpi_ut_get_type_name (node->type)));
+
+                        status = AE_AML_OPERAND_TYPE;
+                        break;
+                }
+
+#ifdef ACPI_GPE_NOTIFY_CHECK
+                /*
+                 * GPE method wake/notify check.  Here, we want to ensure that we
+                 * don't receive any "device_wake" Notifies from a GPE _Lxx or _Exx
+                 * GPE method during system runtime.  If we do, the GPE is marked
+                 * as "wake-only" and disabled.
+                 *
+                 * 1) Is the Notify() value == device_wake?
+                 * 2) Is this a GPE deferred method?  (An _Lxx or _Exx method)
+                 * 3) Did the original GPE happen at system runtime?
+                 *    (versus during wake)
+                 *
+                 * If all three cases are true, this is a wake-only GPE that should
+                 * be disabled at runtime.
+                 */
+                if (value == 2)     /* device_wake */ {
+                        status = acpi_ev_check_for_wake_only_gpe (walk_state->gpe_event_info);
+                        if (ACPI_FAILURE (status)) {
+                                /* AE_WAKE_ONLY_GPE only error, means ignore this notify */
+
+                                return_ACPI_STATUS (AE_OK)
+                        }
+                }
+#endif
+
+                /*
+                 * 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, value);
+                break;
+
+
+        default:
+
+                ACPI_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 (
+        struct acpi_walk_state          *walk_state)
+{
+        union acpi_operand_object       **operand = &walk_state->operands[0];
+        union acpi_operand_object       *return_desc1 = NULL;
+        union acpi_operand_object       *return_desc2 = NULL;
+        acpi_status                     status;
+
+
+        ACPI_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:
+
+                ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_2T_1R: Unknown opcode %X\n",
+                                walk_state->opcode));
+                status = AE_AML_BAD_OPCODE;
+                goto cleanup;
+        }
+
+
+        /* 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 (
+        struct acpi_walk_state          *walk_state)
+{
+        union acpi_operand_object       **operand = &walk_state->operands[0];
+        union acpi_operand_object       *return_desc = NULL;
+        u32                             index;
+        acpi_status                     status = AE_OK;
+        acpi_size                       length;
+
+
+        ACPI_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) */
+
+                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) */
+
+                /*
+                 * Input object is guaranteed to be a buffer at this point (it may have
+                 * been converted.)  Copy the raw buffer data to a new object of type String.
+                 */
+
+                /*
+                 * Get the length of the new string. It is the smallest of:
+                 * 1) Length of the input buffer
+                 * 2) Max length as specified in the to_string operator
+                 * 3) Length of input buffer up to a zero byte (null terminator)
+                 *
+                 * NOTE: A length of zero is ok, and will create a zero-length, null
+                 *       terminated string.
+                 */
+                length = 0;
+                while ((length < operand[0]->buffer.length) &&
+                           (length < operand[1]->integer.value) &&
+                           (operand[0]->buffer.pointer[length])) {
+                        length++;
+                        if (length > ACPI_MAX_STRING_CONVERSION) {
+                                status = AE_AML_STRING_LIMIT;
+                                goto cleanup;
+                        }
+                }
+
+                /* Allocate a new string object */
+
+                return_desc = acpi_ut_create_string_object (length);
+                if (!return_desc) {
+                        status = AE_NO_MEMORY;
+                        goto cleanup;
+                }
+
+                /* Copy the raw buffer data with no transform. NULL terminated already. */
+
+                ACPI_MEMCPY (return_desc->string.pointer,
+                        operand[0]->buffer.pointer, length);
+                break;
+
+
+        case AML_CONCAT_RES_OP:         /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */
+
+                status = acpi_ex_concat_template (operand[0], operand[1],
+                                 &return_desc, walk_state);
+                break;
+
+
+        case AML_INDEX_OP:              /* Index (Source Index Result) */
+
+                /* Create the internal return object */
+
+                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE);
+                if (!return_desc) {
+                        status = AE_NO_MEMORY;
+                        goto cleanup;
+                }
+
+                index = (u32) operand[1]->integer.value;
+
+                /*
+                 * At this point, the Source operand is a Package, Buffer, or String
+                 */
+                if (ACPI_GET_OBJECT_TYPE (operand[0]) == ACPI_TYPE_PACKAGE) {
+                        /* Object to be indexed is a Package */
+
+                        if (index >= operand[0]->package.count) {
+                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                        "Index value (%X) beyond package end (%X)\n",
+                                        index, operand[0]->package.count));
+                                status = AE_AML_PACKAGE_LIMIT;
+                                goto cleanup;
+                        }
+
+                        return_desc->reference.target_type = ACPI_TYPE_PACKAGE;
+                        return_desc->reference.object    = operand[0];
+                        return_desc->reference.where     = &operand[0]->package.elements [index];
+                }
+                else {
+                        /* Object to be indexed is a Buffer/String */
+
+                        if (index >= operand[0]->buffer.length) {
+                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                        "Index value (%X) beyond end of buffer (%X)\n",
+                                        index, operand[0]->buffer.length));
+                                status = AE_AML_BUFFER_LIMIT;
+                                goto cleanup;
+                        }
+
+                        return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD;
+                        return_desc->reference.object    = operand[0];
+                }
+
+                /*
+                 * Add a reference to the target package/buffer/string for the life
+                 * of the index.
+                 */
+                acpi_ut_add_reference (operand[0]);
+
+                /* Complete the Index reference object */
+
+                return_desc->reference.opcode    = AML_INDEX_OP;
+                return_desc->reference.offset    = index;
+
+                /* Store the reference to the Target */
+
+                status = acpi_ex_store (return_desc, operand[2], walk_state);
+
+                /* Return the reference */
+
+                walk_state->result_obj = return_desc;
+                goto cleanup;
+
+
+        default:
+
+                ACPI_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;
+                }
+
+                if (!walk_state->result_obj) {
+                        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 (
+        struct acpi_walk_state          *walk_state)
+{
+        union acpi_operand_object       **operand = &walk_state->operands[0];
+        union acpi_operand_object       *return_desc = NULL;
+        acpi_status                     status = AE_OK;
+        u8                              logical_result = FALSE;
+
+
+        ACPI_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_NUMERIC) /* logical_op (Operand0, Operand1) */ {
+                status = acpi_ex_do_logical_numeric_op (walk_state->opcode,
+                                  operand[0]->integer.value, operand[1]->integer.value,
+                                  &logical_result);
+                goto store_logical_result;
+        }
+        else if (walk_state->op_info->flags & AML_LOGICAL)  /* logical_op (Operand0, Operand1) */ {
+                status = acpi_ex_do_logical_op (walk_state->opcode, operand[0],
+                                 operand[1], &logical_result);
+                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:
+
+                ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_0T_1R: Unknown opcode %X\n",
+                        walk_state->opcode));
+                status = AE_AML_BAD_OPCODE;
+                goto cleanup;
+        }
+
+
+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);
+}
+
+