b229cf92ee
Removed a device initialization optimization introduced in 20051216 where the _STA method was not run unless an _INI was also present for the same device. This optimization could cause problems because it could allow _INI methods to be run within a not-present device subtree (If a not-present device had no _INI, _STA would not be run, the not-present status would not be discovered, and the children of the device would be incorrectly traversed.) Implemented a new _STA optimization where namespace subtrees that do not contain _INI are identified and ignored during device initialization. Selectively running _STA can significantly improve boot time on large machines (with assistance from Len Brown.) Implemented support for the device initialization case where the returned _STA flags indicate a device not-present but functioning. In this case, _INI is not run, but the device children are examined for presence, as per the ACPI specification. Implemented an additional change to the IndexField support in order to conform to MS behavior. The value written to the Index Register is not simply a byte offset, it is a byte offset in units of the access width of the parent Index Field. (Fiodor Suietov) Defined and deployed a new OSL interface, acpi_os_validate_address(). This interface is called during the creation of all AML operation regions, and allows the host OS to exert control over what addresses it will allow the AML code to access. Operation Regions whose addresses are disallowed will cause a runtime exception when they are actually accessed (will not affect or abort table loading.) Defined and deployed a new OSL interface, acpi_os_validate_interface(). This interface allows the host OS to match the various "optional" interface/behavior strings for the _OSI predefined control method as appropriate (with assistance from Bjorn Helgaas.) Restructured and corrected various problems in the exception handling code paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod (with assistance from Takayoshi Kochi.) Modified the Linux source converter to ignore quoted string literals while converting identifiers from mixed to lower case. This will correct problems with the disassembler and other areas where such strings must not be modified. The ACPI_FUNCTION_* macros no longer require quotes around the function name. This allows the Linux source converter to convert the names, now that the converter ignores quoted strings. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
528 lines
17 KiB
C
528 lines
17 KiB
C
/*******************************************************************************
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*
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* Module Name: rsxface - Public interfaces to the resource manager
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2006, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acresrc.h>
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME("rsxface")
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/* Local macros for 16,32-bit to 64-bit conversion */
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#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field)
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#define ACPI_COPY_ADDRESS(out, in) \
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ACPI_COPY_FIELD(out, in, resource_type); \
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ACPI_COPY_FIELD(out, in, producer_consumer); \
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ACPI_COPY_FIELD(out, in, decode); \
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ACPI_COPY_FIELD(out, in, min_address_fixed); \
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ACPI_COPY_FIELD(out, in, max_address_fixed); \
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ACPI_COPY_FIELD(out, in, info); \
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ACPI_COPY_FIELD(out, in, granularity); \
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ACPI_COPY_FIELD(out, in, minimum); \
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ACPI_COPY_FIELD(out, in, maximum); \
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ACPI_COPY_FIELD(out, in, translation_offset); \
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ACPI_COPY_FIELD(out, in, address_length); \
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ACPI_COPY_FIELD(out, in, resource_source);
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/* Local prototypes */
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static acpi_status
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acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context);
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_irq_routing_table
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*
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* PARAMETERS: device_handle - a handle to the Bus device we are querying
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* ret_buffer - a pointer to a buffer to receive the
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* current resources for the device
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the IRQ routing table for a
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* specific bus. The caller must first acquire a handle for the
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* desired bus. The routine table is placed in the buffer pointed
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* to by the ret_buffer variable parameter.
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*
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* If the function fails an appropriate status will be returned
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* and the value of ret_buffer is undefined.
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*
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* This function attempts to execute the _PRT method contained in
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* the object indicated by the passed device_handle.
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*
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******************************************************************************/
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acpi_status
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acpi_get_irq_routing_table(acpi_handle device_handle,
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struct acpi_buffer *ret_buffer)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_get_irq_routing_table);
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/*
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* Must have a valid handle and buffer, So we have to have a handle
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* and a return buffer structure, and if there is a non-zero buffer length
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* we also need a valid pointer in the buffer. If it's a zero buffer length,
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* we'll be returning the needed buffer size, so keep going.
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*/
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if (!device_handle) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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status = acpi_ut_validate_buffer(ret_buffer);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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status = acpi_rs_get_prt_method_data(device_handle, ret_buffer);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_irq_routing_table)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_current_resources
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*
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* PARAMETERS: device_handle - a handle to the device object for the
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* device we are querying
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* ret_buffer - a pointer to a buffer to receive the
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* current resources for the device
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the current resources for a
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* specific device. The caller must first acquire a handle for
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* the desired device. The resource data is placed in the buffer
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* pointed to by the ret_buffer variable parameter.
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*
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* If the function fails an appropriate status will be returned
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* and the value of ret_buffer is undefined.
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*
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* This function attempts to execute the _CRS method contained in
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* the object indicated by the passed device_handle.
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*
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******************************************************************************/
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acpi_status
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acpi_get_current_resources(acpi_handle device_handle,
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struct acpi_buffer *ret_buffer)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_get_current_resources);
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/*
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* Must have a valid handle and buffer, So we have to have a handle
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* and a return buffer structure, and if there is a non-zero buffer length
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* we also need a valid pointer in the buffer. If it's a zero buffer length,
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* we'll be returning the needed buffer size, so keep going.
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*/
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if (!device_handle) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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status = acpi_ut_validate_buffer(ret_buffer);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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status = acpi_rs_get_crs_method_data(device_handle, ret_buffer);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_current_resources)
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#ifdef ACPI_FUTURE_USAGE
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_possible_resources
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*
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* PARAMETERS: device_handle - a handle to the device object for the
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* device we are querying
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* ret_buffer - a pointer to a buffer to receive the
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* resources for the device
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get a list of the possible resources
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* for a specific device. The caller must first acquire a handle
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* for the desired device. The resource data is placed in the
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* buffer pointed to by the ret_buffer variable.
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*
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* If the function fails an appropriate status will be returned
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* and the value of ret_buffer is undefined.
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*
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******************************************************************************/
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acpi_status
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acpi_get_possible_resources(acpi_handle device_handle,
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struct acpi_buffer *ret_buffer)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_get_possible_resources);
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/*
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* Must have a valid handle and buffer, So we have to have a handle
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* and a return buffer structure, and if there is a non-zero buffer length
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* we also need a valid pointer in the buffer. If it's a zero buffer length,
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* we'll be returning the needed buffer size, so keep going.
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*/
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if (!device_handle) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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status = acpi_ut_validate_buffer(ret_buffer);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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status = acpi_rs_get_prs_method_data(device_handle, ret_buffer);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_possible_resources)
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#endif /* ACPI_FUTURE_USAGE */
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/*******************************************************************************
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*
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* FUNCTION: acpi_walk_resources
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*
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* PARAMETERS: device_handle - Handle to the device object for the
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* device we are querying
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* Name - Method name of the resources we want
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* (METHOD_NAME__CRS or METHOD_NAME__PRS)
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* user_function - Called for each resource
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* Context - Passed to user_function
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*
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* RETURN: Status
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*
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* DESCRIPTION: Retrieves the current or possible resource list for the
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* specified device. The user_function is called once for
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* each resource in the list.
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*
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******************************************************************************/
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acpi_status
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acpi_walk_resources(acpi_handle device_handle,
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char *name,
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acpi_walk_resource_callback user_function, void *context)
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{
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acpi_status status;
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struct acpi_buffer buffer;
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struct acpi_resource *resource;
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struct acpi_resource *resource_end;
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ACPI_FUNCTION_TRACE(acpi_walk_resources);
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/* Parameter validation */
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if (!device_handle || !user_function || !name ||
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(!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
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!ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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/* Get the _CRS or _PRS resource list */
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buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
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status = acpi_rs_get_method_data(device_handle, name, &buffer);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Buffer now contains the resource list */
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resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer);
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resource_end =
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ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length);
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/* Walk the resource list until the end_tag is found (or buffer end) */
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while (resource < resource_end) {
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/* Sanity check the resource */
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if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
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status = AE_AML_INVALID_RESOURCE_TYPE;
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break;
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}
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/* Invoke the user function, abort on any error returned */
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status = user_function(resource, context);
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if (ACPI_FAILURE(status)) {
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if (status == AE_CTRL_TERMINATE) {
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/* This is an OK termination by the user function */
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status = AE_OK;
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}
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break;
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}
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/* end_tag indicates end-of-list */
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if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
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break;
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}
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/* Get the next resource descriptor */
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resource =
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ACPI_ADD_PTR(struct acpi_resource, resource,
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resource->length);
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}
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ACPI_FREE(buffer.pointer);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_walk_resources)
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/*******************************************************************************
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*
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* FUNCTION: acpi_set_current_resources
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*
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* PARAMETERS: device_handle - a handle to the device object for the
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* device we are changing the resources of
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* in_buffer - a pointer to a buffer containing the
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* resources to be set for the device
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to set the current resources for a
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* specific device. The caller must first acquire a handle for
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* the desired device. The resource data is passed to the routine
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* the buffer pointed to by the in_buffer variable.
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*
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******************************************************************************/
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acpi_status
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acpi_set_current_resources(acpi_handle device_handle,
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struct acpi_buffer *in_buffer)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_set_current_resources);
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/* Must have a valid handle and buffer */
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if ((!device_handle) ||
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(!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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status = acpi_rs_set_srs_method_data(device_handle, in_buffer);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_set_current_resources)
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/******************************************************************************
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*
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* FUNCTION: acpi_resource_to_address64
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*
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* PARAMETERS: Resource - Pointer to a resource
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* Out - Pointer to the users's return
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* buffer (a struct
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* struct acpi_resource_address64)
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*
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* RETURN: Status
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*
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* DESCRIPTION: If the resource is an address16, address32, or address64,
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* copy it to the address64 return buffer. This saves the
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* caller from having to duplicate code for different-sized
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* addresses.
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*
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******************************************************************************/
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acpi_status
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acpi_resource_to_address64(struct acpi_resource *resource,
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struct acpi_resource_address64 *out)
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{
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struct acpi_resource_address16 *address16;
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struct acpi_resource_address32 *address32;
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if (!resource || !out) {
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return (AE_BAD_PARAMETER);
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}
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/* Convert 16 or 32 address descriptor to 64 */
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switch (resource->type) {
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case ACPI_RESOURCE_TYPE_ADDRESS16:
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address16 = (struct acpi_resource_address16 *)&resource->data;
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ACPI_COPY_ADDRESS(out, address16);
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break;
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case ACPI_RESOURCE_TYPE_ADDRESS32:
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address32 = (struct acpi_resource_address32 *)&resource->data;
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ACPI_COPY_ADDRESS(out, address32);
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break;
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case ACPI_RESOURCE_TYPE_ADDRESS64:
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/* Simple copy for 64 bit source */
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ACPI_MEMCPY(out, &resource->data,
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sizeof(struct acpi_resource_address64));
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break;
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default:
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return (AE_BAD_PARAMETER);
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}
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return (AE_OK);
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}
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ACPI_EXPORT_SYMBOL(acpi_resource_to_address64)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_vendor_resource
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*
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* PARAMETERS: device_handle - Handle for the parent device object
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* Name - Method name for the parent resource
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* (METHOD_NAME__CRS or METHOD_NAME__PRS)
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* Uuid - Pointer to the UUID to be matched.
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* includes both subtype and 16-byte UUID
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* ret_buffer - Where the vendor resource is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk a resource template for the specified evice to find a
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* vendor-defined resource that matches the supplied UUID and
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* UUID subtype. Returns a struct acpi_resource of type Vendor.
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*
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******************************************************************************/
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acpi_status
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acpi_get_vendor_resource(acpi_handle device_handle,
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char *name,
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struct acpi_vendor_uuid * uuid,
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struct acpi_buffer * ret_buffer)
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{
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struct acpi_vendor_walk_info info;
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acpi_status status;
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/* Other parameters are validated by acpi_walk_resources */
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if (!uuid || !ret_buffer) {
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return (AE_BAD_PARAMETER);
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}
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info.uuid = uuid;
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info.buffer = ret_buffer;
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info.status = AE_NOT_EXIST;
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/* Walk the _CRS or _PRS resource list for this device */
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status =
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acpi_walk_resources(device_handle, name,
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acpi_rs_match_vendor_resource, &info);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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return (info.status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_vendor_resource)
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_match_vendor_resource
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*
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* PARAMETERS: acpi_walk_resource_callback
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*
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* RETURN: Status
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*
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* DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
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*
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******************************************************************************/
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static acpi_status
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acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context)
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{
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struct acpi_vendor_walk_info *info = context;
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struct acpi_resource_vendor_typed *vendor;
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struct acpi_buffer *buffer;
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acpi_status status;
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/* Ignore all descriptors except Vendor */
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if (resource->type != ACPI_RESOURCE_TYPE_VENDOR) {
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return (AE_OK);
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}
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vendor = &resource->data.vendor_typed;
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/*
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* For a valid match, these conditions must hold:
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*
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* 1) Length of descriptor data must be at least as long as a UUID struct
|
|
* 2) The UUID subtypes must match
|
|
* 3) The UUID data must match
|
|
*/
|
|
if ((vendor->byte_length < (ACPI_UUID_LENGTH + 1)) ||
|
|
(vendor->uuid_subtype != info->uuid->subtype) ||
|
|
(ACPI_MEMCMP(vendor->uuid, info->uuid->data, ACPI_UUID_LENGTH))) {
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
buffer = info->buffer;
|
|
status = acpi_ut_initialize_buffer(buffer, resource->length);
|
|
if (ACPI_FAILURE(status)) {
|
|
return (status);
|
|
}
|
|
|
|
/* Found the correct resource, copy and return it */
|
|
|
|
ACPI_MEMCPY(buffer->pointer, resource, resource->length);
|
|
buffer->length = resource->length;
|
|
|
|
/* Found the desired descriptor, terminate resource walk */
|
|
|
|
info->status = AE_OK;
|
|
return (AE_CTRL_TERMINATE);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_rs_match_vendor_resource)
|