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// Copyright(c) 2018, Intel Corporation
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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 are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Intel Corporation nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include <memory>
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#include <vector>
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#include <opae/cxx/core/handle.h>
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#include <opae/cxx/core/token.h>
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#include <opae/types.h>
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namespace opae {
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namespace fpga {
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namespace types {
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/** Wraps the OPAE fpga_object primitive.
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* sysobject's are created from a call to fpgaTokenGetObject,
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* fpgaHandleGetObject, or fpgaObjectGetObject
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*/
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class sysobject {
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public:
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typedef std::shared_ptr<sysobject> ptr_t;
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sysobject() = delete;
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sysobject(const sysobject &o) = delete;
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sysobject &operator=(const sysobject &o) = delete;
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/**
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* @brief Get a sysobject from a token. This will be read-only.
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*
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* @param[in] t Token object representing a resource.
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* @param[in] name An identifier representing an object belonging to a
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* resource represented by the token.
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* @param[in] flags Control behavior of object identification and creation.
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* FPGA_OBJECT_GLOB is used to indicate that the name should be treated as a
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* globbing expression. FPGA_OBJECT_RECURSE_ONE indicates that subobjects be
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* created for objects one level down from the object identified by name.
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* FPGA_OBJECT_RECURSE_ALL indicates that subobjects be created for all
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* objects below the current object identified by name.
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*
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* @return A shared_ptr to a sysobject instance.
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*/
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static sysobject::ptr_t get(token::ptr_t t, const std::string &name,
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int flags = 0);
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/**
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* @brief Get a sysobject from a handle. This will be read-write.
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*
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* @param[in] h Handle object representing an open resource.
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* @param[in] name An identifier representing an object belonging to a
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* resource represented by the handle.
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* @param[in] flags Control behavior of object identification and creation.
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* FPGA_OBJECT_GLOB is used to indicate that the name should be treated as a
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* globbing expression. FPGA_OBJECT_RECURSE_ONE indicates that subobjects be
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* created for objects one level down from the object identified by name.
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* FPGA_OBJECT_RECURSE_ALL indicates that subobjects be created for all
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* objects below the current object identified by name.
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*
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* @return A shared_ptr to a sysobject instance.
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*/
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static sysobject::ptr_t get(handle::ptr_t h, const std::string &name,
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int flags = 0);
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/**
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* @brief Get a sysobject from an object. This will be read-write if its
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* parent was created from a handle..
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*
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* @param[in] name An identifier representing an object belonging to this
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* object.
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* @param[in] flags Control behavior of object identification and creation.
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* FPGA_OBJECT_GLOB is used to indicate that the name should be treated as a
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* globbing expression. FPGA_OBJECT_RECURSE_ONE indicates that subobjects be
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* created for objects one level down from the object identified by name.
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* FPGA_OBJECT_RECURSE_ALL indicates that subobjects be created for all
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* objects. Flags are defaulted to 0 meaning no flags.
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*
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* @return A shared_ptr to a sysobject instance.
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*/
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sysobject::ptr_t get(const std::string &name, int flags = 0);
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/**
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* @brief Get a sysobject from a container object. This will be read-write if
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* its parent was created from a handle..
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*
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* @param[in] index An index number to get.
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*
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* @return A shared_ptr to a sysobject instance.
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*/
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sysobject::ptr_t get(int index);
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virtual ~sysobject();
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/**
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* @brief Get the size (in bytes) of the object.
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*
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* @return The number of bytes that the object occupies in memory.
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*/
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uint32_t size() const;
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/**
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* @brief Read a 64-bit value from an FPGA object.
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* The value is assumed to be in string format and will be parsed. See flags
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* below for changing that behavior.
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*
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* @param[in] flags Flags that control how the object is read
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* If FPGA_OBJECT_SYNC is used then object will update its buffered copy
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* before retrieving the data. If FPGA_OBJECT_RAW is used, then the data
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* will be read as raw bytes into the uint64_t pointer variable. Flags
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* are defaulted to 0 meaning no flags.
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*
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* @return A 64-bit value from the object.
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*/
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uint64_t read64(int flags = 0) const;
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/**
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* @brief Write 64-bit value to an FPGA object.
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* The value will be converted to string before writing. See flags below for
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* changing that behavior.
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*
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* @param[in] value The value to write to the object.
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* @param[in] flags Flags that control how the object is written
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* If FPGA_OBJECT_RAW is used, then the value will be written as raw bytes.
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* Flags are defaulted to 0 meaning no flags.
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*
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* @note This operation will force a sync operation to update its cached
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* buffer
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*/
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void write64(uint64_t value, int flags = 0) const;
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/**
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* @brief Get all raw bytes from the object.
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*
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* @param[in] flags Flags that control how object is read
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* If FPGA_OBJECT_SYNC is used then object will update its buffered copy
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* before retrieving the data.
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*
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* @return A vector of all bytes in the object.
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*/
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std::vector<uint8_t> bytes(int flags = 0) const;
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/**
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* @brief Get a subset of raw bytes from the object.
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*
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* @param[in] offset The bytes offset for the start of the returned vector.
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* @param[in] size The number of bytes for the returned vector.
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* @param[in] flags Flags that control how object is read
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* If FPGA_OBJECT_SYNC is used then object will update its buffered copy
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* before retrieving the data.
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*
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* @return A vector of size bytes in the object starting at offset.
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*/
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std::vector<uint8_t> bytes(uint32_t offset, uint32_t size,
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int flags = 0) const;
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/** Get the object type (attribute or container)
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*/
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enum fpga_sysobject_type type() const;
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/** Retrieve the underlying fpga_object primitive.
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*/
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fpga_object c_type() const { return sysobject_; }
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/** Retrieve the underlying fpga_object primitive.
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*/
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operator fpga_object() const { return sysobject_; }
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private:
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sysobject(fpga_object sysobj, token::ptr_t token, handle::ptr_t hnd);
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fpga_object sysobject_;
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token::ptr_t token_;
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handle::ptr_t handle_;
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};
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} // end of namespace types
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} // end of namespace fpga
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} // end of namespace opae
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