From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/acpi/acpica/exstore.c | 557 +++++++++++++++++++++++++++++++++++ 1 file changed, 557 insertions(+) create mode 100644 kernel/drivers/acpi/acpica/exstore.c (limited to 'kernel/drivers/acpi/acpica/exstore.c') diff --git a/kernel/drivers/acpi/acpica/exstore.c b/kernel/drivers/acpi/acpica/exstore.c new file mode 100644 index 000000000..a7eee2400 --- /dev/null +++ b/kernel/drivers/acpi/acpica/exstore.c @@ -0,0 +1,557 @@ +/****************************************************************************** + * + * Module Name: exstore - AML Interpreter object store support + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2015, 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 +#include "accommon.h" +#include "acdispat.h" +#include "acinterp.h" +#include "amlcode.h" +#include "acnamesp.h" + +#define _COMPONENT ACPI_EXECUTER +ACPI_MODULE_NAME("exstore") + +/* Local prototypes */ +static acpi_status +acpi_ex_store_object_to_index(union acpi_operand_object *val_desc, + union acpi_operand_object *dest_desc, + struct acpi_walk_state *walk_state); + +static acpi_status +acpi_ex_store_direct_to_node(union acpi_operand_object *source_desc, + struct acpi_namespace_node *node, + struct acpi_walk_state *walk_state); + +/******************************************************************************* + * + * FUNCTION: acpi_ex_store + * + * PARAMETERS: *source_desc - Value to be stored + * *dest_desc - Where to store it. Must be an NS node + * or union acpi_operand_object of type + * Reference; + * walk_state - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Store the value described by source_desc into the location + * described by dest_desc. Called by various interpreter + * functions to store the result of an operation into + * the destination operand -- not just simply the actual "Store" + * ASL operator. + * + ******************************************************************************/ + +acpi_status +acpi_ex_store(union acpi_operand_object *source_desc, + union acpi_operand_object *dest_desc, + struct acpi_walk_state *walk_state) +{ + acpi_status status = AE_OK; + union acpi_operand_object *ref_desc = dest_desc; + + ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc); + + /* Validate parameters */ + + if (!source_desc || !dest_desc) { + ACPI_ERROR((AE_INFO, "Null parameter")); + return_ACPI_STATUS(AE_AML_NO_OPERAND); + } + + /* dest_desc can be either a namespace node or an ACPI object */ + + if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) { + /* + * Dest is a namespace node, + * Storing an object into a Named node. + */ + status = acpi_ex_store_object_to_node(source_desc, + (struct + acpi_namespace_node *) + dest_desc, walk_state, + ACPI_IMPLICIT_CONVERSION); + + return_ACPI_STATUS(status); + } + + /* Destination object must be a Reference or a Constant object */ + + switch (dest_desc->common.type) { + case ACPI_TYPE_LOCAL_REFERENCE: + + break; + + case ACPI_TYPE_INTEGER: + + /* Allow stores to Constants -- a Noop as per ACPI spec */ + + if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) { + return_ACPI_STATUS(AE_OK); + } + + /*lint -fallthrough */ + + default: + + /* Destination is not a Reference object */ + + ACPI_ERROR((AE_INFO, + "Target is not a Reference or Constant object - %s [%p]", + acpi_ut_get_object_type_name(dest_desc), + dest_desc)); + + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); + } + + /* + * Examine the Reference class. These cases are handled: + * + * 1) Store to Name (Change the object associated with a name) + * 2) Store to an indexed area of a Buffer or Package + * 3) Store to a Method Local or Arg + * 4) Store to the debug object + */ + switch (ref_desc->reference.class) { + case ACPI_REFCLASS_REFOF: + + /* Storing an object into a Name "container" */ + + status = acpi_ex_store_object_to_node(source_desc, + ref_desc->reference. + object, walk_state, + ACPI_IMPLICIT_CONVERSION); + break; + + case ACPI_REFCLASS_INDEX: + + /* Storing to an Index (pointer into a packager or buffer) */ + + status = + acpi_ex_store_object_to_index(source_desc, ref_desc, + walk_state); + break; + + case ACPI_REFCLASS_LOCAL: + case ACPI_REFCLASS_ARG: + + /* Store to a method local/arg */ + + status = + acpi_ds_store_object_to_local(ref_desc->reference.class, + ref_desc->reference.value, + source_desc, walk_state); + break; + + case ACPI_REFCLASS_DEBUG: + /* + * Storing to the Debug object causes the value stored to be + * displayed and otherwise has no effect -- see ACPI Specification + */ + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "**** Write to Debug Object: Object %p %s ****:\n\n", + source_desc, + acpi_ut_get_object_type_name(source_desc))); + + ACPI_DEBUG_OBJECT(source_desc, 0, 0); + break; + + default: + + ACPI_ERROR((AE_INFO, "Unknown Reference Class 0x%2.2X", + ref_desc->reference.class)); + ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_INFO); + + status = AE_AML_INTERNAL; + break; + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ex_store_object_to_index + * + * PARAMETERS: *source_desc - Value to be stored + * *dest_desc - Named object to receive the value + * walk_state - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: Store the object to indexed Buffer or Package element + * + ******************************************************************************/ + +static acpi_status +acpi_ex_store_object_to_index(union acpi_operand_object *source_desc, + union acpi_operand_object *index_desc, + struct acpi_walk_state *walk_state) +{ + acpi_status status = AE_OK; + union acpi_operand_object *obj_desc; + union acpi_operand_object *new_desc; + u8 value = 0; + u32 i; + + ACPI_FUNCTION_TRACE(ex_store_object_to_index); + + /* + * Destination must be a reference pointer, and + * must point to either a buffer or a package + */ + switch (index_desc->reference.target_type) { + case ACPI_TYPE_PACKAGE: + /* + * Storing to a package element. Copy the object and replace + * any existing object with the new object. No implicit + * conversion is performed. + * + * The object at *(index_desc->Reference.Where) is the + * element within the package that is to be modified. + * The parent package object is at index_desc->Reference.Object + */ + obj_desc = *(index_desc->reference.where); + + if (source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE && + source_desc->reference.class == ACPI_REFCLASS_TABLE) { + + /* This is a DDBHandle, just add a reference to it */ + + acpi_ut_add_reference(source_desc); + new_desc = source_desc; + } else { + /* Normal object, copy it */ + + status = + acpi_ut_copy_iobject_to_iobject(source_desc, + &new_desc, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + + if (obj_desc) { + + /* Decrement reference count by the ref count of the parent package */ + + for (i = 0; i < ((union acpi_operand_object *) + index_desc->reference.object)->common. + reference_count; i++) { + acpi_ut_remove_reference(obj_desc); + } + } + + *(index_desc->reference.where) = new_desc; + + /* Increment ref count by the ref count of the parent package-1 */ + + for (i = 1; i < ((union acpi_operand_object *) + index_desc->reference.object)->common. + reference_count; i++) { + acpi_ut_add_reference(new_desc); + } + + break; + + case ACPI_TYPE_BUFFER_FIELD: + /* + * Store into a Buffer or String (not actually a real buffer_field) + * at a location defined by an Index. + * + * The first 8-bit element of the source object is written to the + * 8-bit Buffer location defined by the Index destination object, + * according to the ACPI 2.0 specification. + */ + + /* + * Make sure the target is a Buffer or String. An error should + * not happen here, since the reference_object was constructed + * by the INDEX_OP code. + */ + obj_desc = index_desc->reference.object; + if ((obj_desc->common.type != ACPI_TYPE_BUFFER) && + (obj_desc->common.type != ACPI_TYPE_STRING)) { + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); + } + + /* + * The assignment of the individual elements will be slightly + * different for each source type. + */ + switch (source_desc->common.type) { + case ACPI_TYPE_INTEGER: + + /* Use the least-significant byte of the integer */ + + value = (u8) (source_desc->integer.value); + break; + + case ACPI_TYPE_BUFFER: + case ACPI_TYPE_STRING: + + /* Note: Takes advantage of common string/buffer fields */ + + value = source_desc->buffer.pointer[0]; + break; + + default: + + /* All other types are invalid */ + + ACPI_ERROR((AE_INFO, + "Source must be Integer/Buffer/String type, not %s", + acpi_ut_get_object_type_name(source_desc))); + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); + } + + /* Store the source value into the target buffer byte */ + + obj_desc->buffer.pointer[index_desc->reference.value] = value; + break; + + default: + ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField")); + status = AE_AML_OPERAND_TYPE; + break; + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ex_store_object_to_node + * + * PARAMETERS: source_desc - Value to be stored + * node - Named object to receive the value + * walk_state - Current walk state + * implicit_conversion - Perform implicit conversion (yes/no) + * + * RETURN: Status + * + * DESCRIPTION: Store the object to the named object. + * + * The Assignment of an object to a named object is handled here + * The value passed in will replace the current value (if any) + * with the input value. + * + * When storing into an object the data is converted to the + * target object type then stored in the object. This means + * that the target object type (for an initialized target) will + * not be changed by a store operation. A copy_object can change + * the target type, however. + * + * The implicit_conversion flag is set to NO/FALSE only when + * storing to an arg_x -- as per the rules of the ACPI spec. + * + * Assumes parameters are already validated. + * + ******************************************************************************/ + +acpi_status +acpi_ex_store_object_to_node(union acpi_operand_object *source_desc, + struct acpi_namespace_node *node, + struct acpi_walk_state *walk_state, + u8 implicit_conversion) +{ + acpi_status status = AE_OK; + union acpi_operand_object *target_desc; + union acpi_operand_object *new_desc; + acpi_object_type target_type; + + ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc); + + /* Get current type of the node, and object attached to Node */ + + target_type = acpi_ns_get_type(node); + target_desc = acpi_ns_get_attached_object(node); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p (%s) to node %p (%s)\n", + source_desc, + acpi_ut_get_object_type_name(source_desc), node, + acpi_ut_get_type_name(target_type))); + + /* + * Resolve the source object to an actual value + * (If it is a reference object) + */ + status = acpi_ex_resolve_object(&source_desc, target_type, walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Do the actual store operation */ + + switch (target_type) { + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + /* + * The simple data types all support implicit source operand + * conversion before the store. + */ + + if ((walk_state->opcode == AML_COPY_OP) || !implicit_conversion) { + /* + * However, copy_object and Stores to arg_x do not perform + * an implicit conversion, as per the ACPI specification. + * A direct store is performed instead. + */ + status = acpi_ex_store_direct_to_node(source_desc, node, + walk_state); + break; + } + + /* Store with implicit source operand conversion support */ + + status = + acpi_ex_store_object_to_object(source_desc, target_desc, + &new_desc, walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + if (new_desc != target_desc) { + /* + * Store the new new_desc as the new value of the Name, and set + * the Name's type to that of the value being stored in it. + * source_desc reference count is incremented by attach_object. + * + * Note: This may change the type of the node if an explicit + * store has been performed such that the node/object type + * has been changed. + */ + status = acpi_ns_attach_object(node, new_desc, + new_desc->common.type); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "Store %s into %s via Convert/Attach\n", + acpi_ut_get_object_type_name + (source_desc), + acpi_ut_get_object_type_name + (new_desc))); + } + break; + + case ACPI_TYPE_BUFFER_FIELD: + case ACPI_TYPE_LOCAL_REGION_FIELD: + case ACPI_TYPE_LOCAL_BANK_FIELD: + case ACPI_TYPE_LOCAL_INDEX_FIELD: + /* + * For all fields, always write the source data to the target + * field. Any required implicit source operand conversion is + * performed in the function below as necessary. Note, field + * objects must retain their original type permanently. + */ + status = acpi_ex_write_data_to_field(source_desc, target_desc, + &walk_state->result_obj); + break; + + default: + /* + * No conversions for all other types. Directly store a copy of + * the source object. This is the ACPI spec-defined behavior for + * the copy_object operator. + * + * NOTE: For the Store operator, this is a departure from the + * ACPI spec, which states "If conversion is impossible, abort + * the running control method". Instead, this code implements + * "If conversion is impossible, treat the Store operation as + * a CopyObject". + */ + status = acpi_ex_store_direct_to_node(source_desc, node, + walk_state); + break; + } + + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ex_store_direct_to_node + * + * PARAMETERS: source_desc - Value to be stored + * node - Named object to receive the value + * walk_state - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: "Store" an object directly to a node. This involves a copy + * and an attach. + * + ******************************************************************************/ + +static acpi_status +acpi_ex_store_direct_to_node(union acpi_operand_object *source_desc, + struct acpi_namespace_node *node, + struct acpi_walk_state *walk_state) +{ + acpi_status status; + union acpi_operand_object *new_desc; + + ACPI_FUNCTION_TRACE(ex_store_direct_to_node); + + ACPI_DEBUG_PRINT((ACPI_DB_EXEC, + "Storing [%s] (%p) directly into node [%s] (%p)" + " with no implicit conversion\n", + acpi_ut_get_object_type_name(source_desc), + source_desc, acpi_ut_get_type_name(node->type), + node)); + + /* Copy the source object to a new object */ + + status = + acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc, walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Attach the new object to the node */ + + status = acpi_ns_attach_object(node, new_desc, new_desc->common.type); + acpi_ut_remove_reference(new_desc); + return_ACPI_STATUS(status); +} -- cgit 1.2.3-korg