1 files changed, 605 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
new file mode 100644
index 000000000000..b01980df1365
--- /dev/null
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -0,0 +1,605 @@
+/******************************************************************************
+ *
+ * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * 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/accommon.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;
+
+                /* Are notifies allowed on this object? */
+
+                if (!acpi_ev_is_notify_object(node)) {
+                        ACPI_ERROR((AE_INFO,
+                                    "Unexpected notify object type [%s]",
+                                    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 "DeviceWake" 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_ERROR((AE_INFO, "Unknown AML opcode %X",
+                            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_ERROR((AE_INFO, "Unknown AML opcode %X",
+                            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;
+        }
+
+      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);
+        }
+
+        /* Save return object (the remainder) on success */
+
+        else {
+                walk_state->result_obj = 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;
+        acpi_integer 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++;
+                }
+
+                /* 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;
+                }
+
+                /* Initialize the Index reference object */
+
+                index = operand[1]->integer.value;
+                return_desc->reference.value = (u32) index;
+                return_desc->reference.class = ACPI_REFCLASS_INDEX;
+
+                /*
+                 * At this point, the Source operand is a String, Buffer, or Package.
+                 * Verify that the index is within range.
+                 */
+                switch (ACPI_GET_OBJECT_TYPE(operand[0])) {
+                case ACPI_TYPE_STRING:
+
+                        if (index >= operand[0]->string.length) {
+                                status = AE_AML_STRING_LIMIT;
+                        }
+
+                        return_desc->reference.target_type =
+                            ACPI_TYPE_BUFFER_FIELD;
+                        break;
+
+                case ACPI_TYPE_BUFFER:
+
+                        if (index >= operand[0]->buffer.length) {
+                                status = AE_AML_BUFFER_LIMIT;
+                        }
+
+                        return_desc->reference.target_type =
+                            ACPI_TYPE_BUFFER_FIELD;
+                        break;
+
+                case ACPI_TYPE_PACKAGE:
+
+                        if (index >= operand[0]->package.count) {
+                                status = AE_AML_PACKAGE_LIMIT;
+                        }
+
+                        return_desc->reference.target_type = ACPI_TYPE_PACKAGE;
+                        return_desc->reference.where =
+                            &operand[0]->package.elements[index];
+                        break;
+
+                default:
+
+                        status = AE_AML_INTERNAL;
+                        goto cleanup;
+                }
+
+                /* Failure means that the Index was beyond the end of the object */
+
+                if (ACPI_FAILURE(status)) {
+                        ACPI_EXCEPTION((AE_INFO, status,
+                                        "Index (%X%8.8X) is beyond end of object",
+                                        ACPI_FORMAT_UINT64(index)));
+                        goto cleanup;
+                }
+
+                /*
+                 * Save the target object and add a reference to it for the life
+                 * of the index
+                 */
+                return_desc->reference.object = operand[0];
+                acpi_ut_add_reference(operand[0]);
+
+                /* 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_ERROR((AE_INFO, "Unknown AML opcode %X",
+                            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);
+                walk_state->result_obj = NULL;
+        }
+
+        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_ERROR((AE_INFO, "Unknown AML opcode %X",
+                            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;
+        }
+
+      cleanup:
+
+        /* Delete return object on error */
+
+        if (ACPI_FAILURE(status)) {
+                acpi_ut_remove_reference(return_desc);
+        }
+
+        /* Save return object on success */
+
+        else {
+                walk_state->result_obj = return_desc;
+        }
+
+        return_ACPI_STATUS(status);
+}